(Pt 1) "Ferrari of Cadillacs": '93 Allante V8 STUMPS Shop for 9 MONTHS?! (New Year 2024)

[@jefferybretherick2124]

When I was a teenager I worked at my local NAPA store. The owner bought an Allante brand new in '93. He was shocked to learn that car had a 50% depreciation rate after you drive if off the lot. Despite that, I felt like a rock star when he let me drive it to fill it up with gas. His model had an all digital dash display. Looked like a Star Fighter. lol

[@dblr616]

The theft/security Iight is the start stall, that’s my opinion .. I fixed a lot of these gm theft issues in my day. So on that particular model I’m assuming, because he didn’t show it but if it’s the chip/resistor in the key, you can go to the base of the column snatch the two small white wires down cuz they are broken in the column pop the resister out of the key and solder it between the two white wires and wallah theft module or bcm is happy and releases the theft line to ecm or because of what car he is working on im sure he will be busting out his steering wheel puller and lock plate puller tool and replacing the tumbler because thats where the two white wires go to, to read the resistance

[@stevestadnik9206]

At 9:27 you can see resistor.

[@JacksAutoDiagnostics]

This is it. Take a look online at the cylinder lock for this model. Two small wires run down the steering column from the cylinder lock. One or both little wires are broken. It's called GM PassKey security system or something like that. This could be separate from any ECM diagnostics maybe and probably has it's own security module behind or below the glove box. At least that's where it was at on the Pontiacs. He's got the manual, maybe he should check that first. All those PassKey systems break the little wires in the column. What a bitch to install a cylinder lock.

[@stevestadnik9206]

@@JacksAutoDiagnostics I have bypassed more of them than fixed properly. There are 15 different resistor values. By the time I saw them, they were 10 to 15 year old beaters that owner didn't want to spend any money on.

[@greatreset3]

It's the theft deterrent system! The wires break off of the ignition lock cylinder for reading the key chip. Classic start stall theft fault. It will never run with the theft light flashing !

[@Robert-zn9ub]

Fact!

[@mikeafa1]

I totally agree. That and no proper communication to the pcm.

[@davidhall3747]

He hasn’t diagnosed the car yet, why all the prognosis theories? It’s back to the basics: Air, Fuel, or Electrical.

[@mph5896]

@@davidhall3747 You posted right under this comment what the main issue is. Gotta fix that before moving on.

[@stevenakn1]

Spoiler alert 🤣

[@mikechiodetti4482]

First time I saw one of these being worked on was at the GM Training Center in Burbank California. The entire dash was removed, there were 8 large harnesses from some kind of diagnostic machine connected to the car's harnesses and the dash harnesses. No idea what was going on with this vehicle. Our group was not in a Cadillac training class. We were passing through this diagnostic(?) room. That was back in the early 90's. Good luck with this one Ivan, you may need it!

[@frankvoynar6427]

Ivan, as a retired german car tech ur holiday series slays me, better than watching pennstate football with my wife.. happy new year.

[@njphilwt]

Ivan… Thanks so much for keeping them coming through holidays!

[@mrblonde2013]

Love it Ivan, i have a '90 Rolls Royce Silver Spur waiting for me when i get back to work after Xmas, towed in as an intermittent crank, no start.😂😂😂 I feel like i am in the same boat as you, completely unfamiliar vehicle and systems and on top of that little to no service information🤔🤔🤔 thanks Ivan for your willingness to take on these oddball cases. They provide entertainment and a great learning opportunity.

[@PineHollowAutoDiagnostics]

Wow never touched a Rolls Royce before! Have fun! 😊

[@klu570]

I just watched pt 1 and My bet is it won't run. Best bet is the PCM and good luck finding a new one. The Electrolytic capacitors leak eating away the traces on the board. Change the caps and solder jumpers across the bad traces and it will be as good as new. Time to watch part 2.

[@waltdisnenycopyright8048]

I sincerely hope this is easier than that pastry van, happy new year to all 🇬🇧

[@TheVespap200e]

Amen! To that!

[@PineHollowAutoDiagnostics]

@@waltdisnenycopyright8048 too funny this one also has MAP issues 😆

[@GNX157]

He stretched the pastry van out too far in length. It should have been edited down for brevity. There was no reason for all that time.

[@Focusfanatic242]

@@GNX157sounds like you watched all the episodes. It would have been very easy to skip all of them until the finale came out on Christmas (you knew it was the Christmas special so it would end on Christmas). Do you go out to a restaurant, eat your entire meal, and then demand your money back because it was cold or incorrectly prepared?

[@GNX157]

@ If it’s cold or undercooked I report it right away. It obviously won’t be getting better. A poor analogy really. And no I didn’t watch it all. I started by ffwd, and progress more and more of that based on what I’m seeing. It could have used a better edit for time, and still be broken up into the requisite parts.

[@15066bas]

The theft will need bypassed, read resistance on the chip of the key and Supply your own resistor in place of it. The baro is actually the map sensor reading when you cycle the key on before the car starts. Also the quad driver fault needs addressed. A quad driver is something that actually drives components associated with the engine just like drivers on a modern car.KISS on these, back to basics. Supplement a fuel source, does it run? Check for good Spark and go from there. ECM failures where common on those.

[@joekuntzman4016]

Pretty cool feature, being able to read datastream parameters on built in display.

[@mikeafa1]

Love these hard diagnostic mini series you have been putting out Ivan. I would say that you aren't getting too far without getting past the Security light issue and restoration proper communication to the PCM. You may have to try the other eeprom from the owner. I think she would run after that on a default strategy. Happy new year! 2025 looks to be off to a good start!

[@MichaelMosesHammer]

Not really when you see nonsense like this!

[@peugeotplanet7553]

Another series 😊😊😊 I'm really enjoying this holiday 🎉

[@farmermiyagi1338]

Ivan knew I was going to be bored for something to listen to while I had my coffee this morning, so he posted me a video. I feel special. 😁

[@jeremypilot1015]

For reference on how expensive a Cadillac the Allante was, adjusted for inflation, a person would pay approx. $136,404 dollars for that car in today's money.

[@keshmo12]

What's crazy is I know people that bought a house for less than the price of that car in 1993. Now you'd be lucky to buy a house cheaper than a Ferrari.

[@kevinbarry71]

Which is why nobody ever paid sticker. Except for somebody's uncle

[@EvzenKovar-i5p]

Whoa. That’s a beautiful specimen though huh?

[@kerrylewis2581]

Holy Pininfarina

[@mixedboi]

F40 ​@@keshmo12

[@SuperBuzzbomb]

Honestly it's not gonna start with the theft deterrent system armed. I would be looking into that first myself.

[@volvo09]

Yeah, aren't these GM cars with the resistor key notorious for having theft deterrent issues resulting in a start stall? I remember people saying they were always bypassing the system with a resistor.

[@ehsnils]

Makes sense to me too. I had a Subaru XT Turbo from '86 that had a similar problem momentarily after I had done some work on it and it was a loose vacuum hose. That car had a 5th injector in the manifold for cold starts that only was active at cranking and then cut off and that's what caused the start and then stall. So in addition to theft deterrent system vacuum leaks from dried out hoses could be an issue.

[@ATSNorthernMI]

Measure the original keys for the right resistance and then solder a resistor into the lock cylinder wires(small twisted pair). Theft deterrent is what's making the start stall happen. Anyone with a 90's cadillac would have experienced this and lucky AOL was around to look it up.

[@KellySpongberg]

Years of installing remote starts, this one acts like the resistance check is failing and cutting the engine off. When I hear a GM start and immediately stop, I look at the PATS (passive anti theft system). I would not solder in a resistor, as some higher trim GMs also measured time along with resistance (think waveform) so a new cylinder may be the fix.

[@PineHollowAutoDiagnostics]

@@KellySpongberg wouldn't that set a security code in the PCM though?

[@dennispapadopoulos4920]

Another great series! Can’t wait! I’m just waiting for you to prove the “specialists” wrong once again 🔝🥰

[@pnowicki879]

this car brings back memories of OBD1 diagnostics on Cadillacs. Fun car to drive. Thanks.

[@AntonBabiy]

I'm guessing map sensor won't fix it since that would be too short for a new year's special 😁

[@behavedave]

He hasn't checked the reference voltage or the ground on the sensor yet.

[@PineHollowAutoDiagnostics]

Who said that this car only has ONE problem?😉

[@AraCarrano]

RIP Robin Williams. Great film with a wonderful cast. Cadilac Man 1990

[@craiggoodwin9704]

Ivan, looks like you've got yourself another one. Good Luck. Thanks for Sharing! 🙃🙂

[@TheVespap200e]

Place your bets! Yeah right! After the Christmas special, I gave up betting all together! 😀👍 Thanks for the video Ivan!

[@gregwarren8583]

Quad Drivers were used to control up to 4 items off each chip (driver). The PROM is a calibration unit and must match stored internal data. Checksum errors are internal chip errors. I would make sure you have the correct PROM installed in the ECM. Then, address the issue of Theft Deterrent if still shown as a problem, as others have sai about hhe key and ignition switch. Good Lluck!

[@johnt.848]

Pininfarina is a famous Italian design studio, based on the man of the same name. "Allante" is a Spanish word that means "persuasion with lies" In simple terms, buyers were conned into thinking it was a luxury sports car

[@mikeafa1]

Kinda sounds like the US political system and parties of today! Hummm...

[@user-pq9ji7kt4l]

Ha ha. That great! Thanks for sharing that tidbit!

[@tomtke7351]

Observations: (-1-) When buying such a car (maybe even ANY car) always buy the factory shop manual.

[@user-pq9ji7kt4l]

Now days it’s online and there’s a fee…..

[@tomtke7351]

@@user-pq9ji7kt4l alldatadiy?

[@jameshampton3969]

In my opinion, all new cars should leave the factory with a complete set of factory service manuals for that vehicle sitting in the front seat. The price of which should be included in the MSRP. The main deterrent to this seems to be the manufacturers only want their own service centers working on their vehicles.

[@rodvan-zeller6360]

At 11:34 if I remember a quad driver was a transistor arrangement that would activate several components. I replaced a positive cable on one of those cars a long long time ago it was $500 had a built-in temp sensor. We used to say those cars suffered from "buttonities" because of all the buttons.

[@craigstubbs1991]

The first thing I would have done is look in the owners manual to see if the flashing security message is normal or an error ESPECIALLY because they changed a module and it may needed the key programmed. It may explain why it no longer idles after the other shop worked on it.

[@mydogpeaches1]

i don’t doubt the sensor is bad however the start stalls is a classic case of gm vats security issues and you have a security light staying on if it was my car the vats would have been bypassed a long time ago i suspect you have a problem with the vats system and the map was a problem as well i do think there’s a default strategy but im not 100 percent sure at that time it’s possible that there isn’t a default solution but i still think it’s the security system classic gm cutting the fuel so all you had was the prime so you get a start instantly stalls then just a crank no start as there is only a prime with a key cycle anyway i look forward to your next update

[@brianw8963]

I momentarily thought about the security system issue, but at the same time knew that Ivan was well aware of it , so I put that aside, for now. 👍

[@mydogpeaches1]

@ i definitely understand what you mean i only mention it as i have had to personally bypass the vats system in 2 of my cars i personally do the bypass just because of the age of the ignition switch components more often it’s just an issue with the cars ability to read the key an i just have not had any luck fixing the problem with aftermarket parts i have been left walking lol not fun so i just do away with it all together so i never have a problem in the future you can always restore the system as i just put a resistor in line with the correct value very common to see it done today however im going off the light in the video itself i personally have not had to do a pcm repair on my older cars so it could be something there so im very much looking forward to the next video

[@brianw8963]

@@mydogpeaches1 Understood. Yep, this will be fun for sure. 👍👍🇺🇸

[@windward2818]

This is as you say VATs, but for 1993 the Allante has a dedicated Pass Key decoder module which will deactivate the starter relay feed when the key fails, so the engine should not crank at all.

[@pootthatbak2578]

Getting into a 93 allante interior sounds like walking up a mountain of desktop computer keyboards and sitting on the pile and squirming around.

[@chrisanderson4799]

GM interiors are by far the worst, no matter the price point!

[@404notfound.....]

My boss has the exact one you have including the color. It's been sitting in his garage for about fifteen years. Great video Ivan!!

[@nsz2302]

Anti theft light staying on... Bad sign. I had once an Alfa Romeo with one shorted out injector wire under the manifold (thanks to the previous mechanic) which blew out a main ECU fuse that triggered the anti theft system. I chased that mofo for 9days.

[@stevevarholy2011]

Just in the first couple minutes seeing the crank/no -start or 1sec run time with the Theft System Armed light on, I would suspect the ignition key pellet system that GM used - a very common C4 Corvette issue. Now back to the video....

[@konstantintomilin1826]

I've actually seen a MAP sensor failure on a 5 cylinder VW I was tinkering with. That thing sat for 10 years and when I finally got it to start, it ran like on 2 cylinders. Spark, compression, fuel all checked out. I was getting ready to fire the parts cannon at it but I unplugged the vacuum hose going to the MAP sensor, which lives inside the PCM btw, and the engine reved up to 3k rpm and ran flawlessly. I had to solder a new MAP sensor onto the PCM board and it fixed the misfire issue.

[@kensimpson8133]

Map sensor may help, I am a little concerned for the Quad driver 2 code, that showed up for the ECM. I have feeling that is going to be a big clue. The theft deterrent flashing also may be part of this.

[@Zeus-wl2pl]

Hey Ivan, I think you have to do the Kelly Bundy bounce when referring to the Allante

[@johnclamshellsp1969]

The Northstar V8 head bolts rotted away to nubs, causing failure. They have a kit available for the issue and the job is like $7000. A large batch of the Northstar V8' water pumps had plastic pump impellers. Due to fluid friction, they would wear down and cause the engine to overheat.

[@carbie5614]

Unobtainium, i had to look that up. Always the best Ivan.

[@tebbi67]

It seems as if Ivan lives above a magnetic field that attracts cars with the worst defects....but every time he goes into battle, brave like Don Quixote....and shows that the mind can be a sharp weapon in the noble fight against errors. ...thx for the vid

[@CACressida]

I seen an Allante once in my local Pick n pull over a decade ago. I thought it was an Eldorado at first glance. When i popped the hood and seen the Northstar and immediately knew why it was there. It was there for a very long time completely untouched and in very good condition cosmetically.

[@farmermiyagi1338]

Slapping that original PROM back in the ECM would be my first move. Sounds to me like they were just poking in the dark at the previous shop. Those old onboard systems sucked.

[@kevin9c1]

GM had the best systems though. Informed what would eventually become the OBD-II standard.

[@simuler]

Its acting like the immobilizer is active, and that light on the dash also points in that direction, i dont think the map sensor will resolve the problem

[@1964Mooney]

Always fun to watch your diags. I watch a lot of them and learn from each even though I've been a mechanic for 60 years. BTW my grandmother was born in Mt Eagle just east of you in 1880!!

[@TheOriginalDaveJ]

Sounds like an immobiliser issue.

[@perrytopness5903]

VATS

[@bntrouble31]

@@perrytopness5903Yelp yellow wires under steering column

[@billsmith5166]

Beautiful car and it's mint. Sixty-eight thousand was a LOT of money back in 1993.. $150,000 today.

[@volvo09]

Yeah that was a LOT of money. Times were different back then too, wages were much lower and prices for homes and food were much lower, you really need to think of it as being a $200k+ car in todays economy to truly put it into perspective.

[@davidmoss9471]

Hey Ivan, how many parts we looking at for this series? I like to binge watch so want to let you release all the parts before i watch any. Once i saw the 'conclusion' released for the pastry van i watch all parts in one sitting. Merry xmas and happy new year Dave

[@bobby9195]

Happy New Year 🎉 YAY! Guess what? 😮 we're now a whole year older 😊 Hope y'all had a great Christmas, and wishing y'all the best,😅😂🎉❤❤❤ Thank you for the great videos

[@rwrobs777]

Great video Ivan !!…when I diagnose a crank no start even before I start the car I have made a habit checking the MAP sensor KOEO…101 kPa at sea level…LOL !!

[@franklaumen77]

Don't you need to get rid of the "theft system armed" message first? Wouldn't that be the difference between 'crank no start' and 'crank, start, stall under load'?

[@RussellBooth1977]

There is a fix for the cylinder head bolt thread stripping problem but it requires specialised equipment to drill out the old threads then to fit Timeserts into the engine block while the engine is still bolted into the car. I think that the sequential fuel injection is just a gimmick because just about all of the multi point fuel injected engines were semi sequential fuel injected systems or a "batch fired" fuel injection system which ECU had 2 injector driver transistors, 1 for each batch of injectors. In Australia, Holden ran the very last 3.3 litre Holden inline six using a Bosch L-Jetronic ECU which wasn't sequentially fuel injected because 1 power transistor switched all 6 fuel injectors together in the 1984-1986 model Holden VK Commodore. Then when Holden bolted the Nissan RB30E(T} engine into the next model, the 1986-1988 model VL Commodore it was semi sequentially fuel injected meaning that each batch of 3 fuel injectors were fired separately & alternately or one after the other. When I did the DOHC cylinder head conversion on the 3 litre Nissan RB30E 6 cylinder engine I used the ECU & wiring harness for the 6 cylinder Nissan RB25DE engine which was out of a 1995 model Nissan R33 Skyline, that car had full sequential fuel injection & a COP (coil on plug) ignition system instead of a distributor like the SOHC engine did. That means that each fuel injector was fired separately rather than the injectors being batch fired. That Chevy Northstar engine appears to still use the ECU which has the plug in MEMCAL as both the GM-DELCO OBD1 (ALDL) & the Bosch OBD1.5 PCMs did in the V6 & V8 Holden Commodores did in Australia up until 1999 prior to Holden replacing the locally built 5 litre Holden V8 engine with the 5.7 litre Chevrolet LS1 V8 engine which was controlled by an OBD2 Delphi PCM which could only be reflashed through the diagnostic port. The Holden Commodores which were fitted with the 3.8 litre Buick L36 V6 engine continued to run with that Bosch PCM up until 2004 prior to the release of the VZ Commodore which ran the locally built 175 kilowatt 3.6 litre "Alloytec" GM-Holden V6 LY7 engine. That equivalent engine albeit a 210 kilowatt version of the 3.6 litre V6 engine replaced the 32 valve 4.6 litre Chevrolet Northstar V8 engine, it also replaced the 4.8 litre Chevrolet V8 engine so yeah, why bother with the 4.8 litre V8 engine which was less powerful than the 3.6 litre V6 engine ? I would give that Northstar engine in the video a squirt of starting fluid to see if it even fires over despite it smelling flooded with fuel !

[@kevin9c1]

GM had sequential fuel injection back in 1984 on the Grand National. It took another 10-12 years for the rest of their engines to get it.

[@rawr51919]

Re: the thread stripping issue Why not just rethread the head bolts every time this happens? Much cheaper and easier fix

[@JimmyMakingitwork]

Sometimes on these the PATS will not allow it to crank, but if someone bypasses it the system turns off the fuel pump or injectors. Long shot and someone else probably guessed that, haha. Notorious for wiring decay and fuel system issues too.

[@ATSNorthernMI]

This was back when you didn't need a scan tool to work on a high tech car. You just use the tech on the dash and let it read out codes and I didn't even know live data. This was super easy to work on with the service manual in hand.

[@agostinodibella9939]

This is another great challenge, Ivan! Too bad you didn’t get first shot at it!

[@dmurf4156]

Ivan is a youngster so he wasn’t around when we old guys were able to go to radio shack and grab a handfull of resistors to “recalibrate” the antitheft setup. He will get to it when the MAP sensor fails to fix it….live-n-learn..mistakes are like memory super glue..😊

[@kevin9c1]

He's not too young to have owned a vintage passkey vehicle but I also don't think he has.

[@bntrouble31]

I used a variable resistor on these. Just dialed it to each resistance.

[@PineHollowAutoDiagnostics]

@@dmurf4156 don't under estimate the youngsters 😜

[@newmarkettruckandautoservi7650]

@@PineHollowAutoDiagnostics ahahaaha, suspense.

[@lvsqcsl]

@@PineHollowAutoDiagnostics Come in there, Ivan. Youngsters, Russian Hacksters, etc.

[@dendkmac]

I had a 93 concourse DeVille $4500 worth of Northstar head repair, loved the car it was big, fast got great fuel mileage but it was a beached whale more then it ran blew out the cooling system went into limp mode did NOT kill the car but over heating it did not help, took it down to Mexico they loved it

[@bearg4019]

Good lock finding parts...

[@wayneessar7489]

Does it need locks?

[@benjaminwashington2331]

check security wiring under steering wheel column or chip in key, other wise seems to be mass air flow sensor problem but pre 96 northstar seems to not have mass air flow sensor

[@jeremypilot1015]

This was one of my favorite Cadillacs of all time. Just because it was so unique. I hope you get that beauty running again. So pretty.

[@AKChryslertech]

I cant lie, that driver info system is pretty cool. There was alot of cool stuff in the 90's that was useful in cars that could have made life alot better if people would have known better how to use it.

[@GlacialErratic]

I bet not. Like you say, there should be a strategy within the ecm to deal with the map sensor failure.

[@CajunShrek]

Hv u ever thought of an intro /outro buffer music or adding lil automation to title? Just curious...love ya work Ivan happy New year!

[@brianw8963]

Oh , this is going to be good, already is. Kinda odd that someone close would have opted to take take it elsewhere first, just my bias voltage. 👍👍🇺🇸

[@wayneessar7489]

Perhaps the price of towing was less?

[@brianw8963]

@ We can only speculate for now I guess. 👍

[@paulstandaert5709]

The MAP should solve the original issue of no throttle response, but I expect the anti-theft is why it only fires and stalls immediately. That light should not be on like that.

[@ischmidt]

That built-in code reader is one of GM's better ideas. It really oughta be a common thing now.

[@stevenakn1]

Gonna need some wine and cheese to make this thing happy

[@AaronAverett]

That interactive BIT mode that this has is super cool. Almost like a Tesla (they have a similar diagnostic mode you can access via little song and dance in the menus). It's a bummer that every car doesn't have something like that.

[@PineHollowAutoDiagnostics]

Yup actually don't really need a scanner for this one ;)

[@keltecshooter]

That car is Italian , must be FRAGEEELAY

[@brianw8963]

I have a mini bobble head( lampshade) in my garage! 👍

[@keltecshooter]

​@@brianw8963that's the best !

[@johnmccallum8512]

Only the bodywork the engine and trasmision is all Cadilac.

[@brianw8963]

@@keltecshooter Think I heard a swoosh. 😅

[@baxrok2.]

Thanks Ivan!

[@ohboy2118]

Couple of questions. Surely, without fixing the Anti-theft system, anything you do downstream of that is pointless? Or if you can bypass that, do you not have a signal generator you can use to substitute the map signal to trick the ecu into believing it is working correctly to prove your theory? Doesn't the OEM service manual give a voltage range for a good MAP Sensor?

[@scottmcintosh2988]

Had this 1971 Eldorado 501 V8 BIG Block the largest e line placed in a production car it would pass everything but a gas station !!!YELLOW !

[@tobycanales1062]

? VATS ? might need to bypass with a resistor

[@johnhickman1534]

$62,870 in 1993 is $137,606.28 in 2024

[@rodneymiddleton9624]

Keep plugging away at it and I'm sure you will figure it out. Thanks Ivan!

[@MichaelMosesHammer]

Can't wait for part 2, to see the simple fix! Poor Ivan! He tries hard but .......i:

[@volvo09]

What a weird location for the map sensor. I was thinking the same thing, what is it's reference to atmosphere if it's inside the intake? No wonder it's an unobtainable part, they overcomplicated a sensor in a way that not even the German brands will do!

[@farmermiyagi1338]

That start/stall almost acts like the ignition switch is coming apart. The old column mount switches were bad to separate, causing symptoms just like this. I'd still start with installing the old PROM first though.

[@juanrodriguez-ry6yt]

i have this same car.89 with 4.5 push rod.103k miles .Long time viewer L1 master car and truck 70 years old. the key has to be by-passed with resister in the yellow wire from ign. switch to ecm .Allante Source in West Palm Beach is the only place that can help with parts.

[@Andy_Hinners]

Hamtramck assembly plant, Detroit - Motor City! In 1993 you could buy a house in a working class neighborhood near the Hamtramck plant for a fraction of the price of that car.

[@colinrawlins3286]

Based on your vast knowledge and experience of auto electrics i would have thought that you would be the first resort for people to go to rather than the last resort.

[@brianw8963]

My first thoughts also, especially being so close. 👍

[@alexdragomirescu5084]

People love being screwed. After many years of trying to understand human nature...that's my conclusion. It's aplicabile in any field. From buying a 30 years old car with "only 10k miles" and a price 1/4 of it's market value to putting breast implants in Uganda for 34,99$.

[@dblr616]

I’m sure he charges a pretty penny for his services and I don’t blame him I’m the same way. However one thing I’ve noticed with being in the industry for my entire adult life is people think cheap is better however contrary to that belief the guy prolly has more into it in the last 9 months at the other shop than Ivan will charge to fix it correctly. Parts cannons get expensive quickly.

[@rj.parker]

Pretty sure the first place was the owner's friend giving him a "deal". Which explains the initial four months of do nothing.

[@PineHollowAutoDiagnostics]

I don't mind being the "last resort"... Desperate customers usually don't complain about the cost 😅

[@drewv1785]

OK I'm placing my bet. Rock Auto for the win! Fingers crossed.

[@goodtimejohnny8972]

I hope the powers that be send you a THINKTOOL Expert 399 14-INCH New AI Technology Diagnostic Tool 2024 New Release AI, Dual Vehicles Diagnostic scan tool to review. I would love to see you diagnose some adas and ev vehicles. Some heavy duty equipment again too, that was interesting. Keep up the great work. Your channel is better than prime time tv!

[@jeffco908]

Im a little hung up on the quad driver fault. Quad driver 2 relates to fuel injector controls. Im kinda leaning towards an injector fault or fuses for injectors. PCM wants to see 12v when output is off and 0v when output is on. Simple fuse could cause that fault message. Thats my best guess at this point.

[@frugalprepper]

The map sensor may be a problem, but I don't think its the problem. Any time I see this type of activity from a GM I think bypass ignition system. I would have started by looking at the crank sensors and the ICM. The one sensor trips at TDC and the other on is offset like 27 degrees. It runs off of one of them for the initial fire up and then switches to the other one a second later to be able to adjust the timing with the computer.

[@rhkips]

Blower motor won't turn off and randomly undulates, eh? Sure looks like there's a lot of super high tech early 90s electronics in that center stack! I can't imagine GM would eeeever tie a whole bunch of powers and grounds together for things like the HVAC, antitheft, PCM and Cruise Control... LOL Excited to see where this one goes! Really cool rare piece of history there, definitely worth keeping it functional! :D

[@Artbroken414]

Ooh! A non-OBD2 car! Good luck!

[@jackiemay9471]

a year and a half or eighteen months which ever is the longer happy new year IVAN and mrs ivan

[@malizia63]

Cadillac was ahead of their time with some of these features. I had an 86 ElDorado that you could access the PCM the same way.

[@MrTonyPiscatelle]

Is there not a way to generate a signal to feed the map sensor circuit ? I have a feeling ,,,,,,,I have a suspicions feeling this is going to be another series of events. Where's my pop corn ?

[@billsmith2212]

You can Google : What is GM Astro ventillation ? That may explain the blower motor running - if the key is on . No expert here , but on those early GM with the PROM memory , your high end scan tool may be able to ID the existing PROM . Check with GM if there were any updates with new software . You would then put in the latest PROM . Some of the counter people weren't even born when this came out and may not know what a PROM is ! 😂😂😂😂😂

[@johnlohr6396]

Check passkey lock cylinder resistance while rotating from off to crank. Think you’ll find circuit opens as cylinder is rotated. Resistance should match pellet in key and not change as cylinder is rotated 😊

[@RipCityBassWorks]

A good lesson on always going with Ivan first.

[@southhillfarm2795]

Oh man we’ve been waiting for this one.

[@craigthepony6259]

The quad driver module’s are like multipurpose blocks. Both monitors a circuit and controls a circuit. Idk why they did it this way instead of making a own dtc like “air pump relay”. Say for the air pump relay, with it being off the sense line is expecting battery, and near 0 when on. But say the fuse is blown before the ecm tries to turn on the relay, it will see no battery. A fault line will change and cause a dtc for which qdm is at fault and will change a data pid from ok to fault. There tends to be 3 qdm’s

[@HouseCallAutoRepair]

I had this exact model, about 2 years ago... 3 inch thick manual with it too... It was wet, musty, and impossible. I gave up fast. Beautiful car, ahead of it's time...

[@HouseCallAutoRepair]

The only difference I see is it's displays aren't bleeding out. Someone did a PATS bypass...

[@SuperJoes70]

Hi Ivan thanks for the great video ! I have a 93 also but have about 80k but no problems so far . These cars are known for having a bad resistor chip on the key I think it's 10 olms check that among other things . I also have my trusty snapon varous did you use a adaptor cable to hook your scanner from obd 2 to obd 1?? also it's better to use a non synthetic oil on the first gen Northstars less possible chance of less leaks . these engines also use oil .

[@fir3w4lk3r]

Every absolute pressure sensor must have this vacuum reference void. Also the system doesn't seem able to detect the absence of the MAP. Usually in systems that detect open/short circuit condition of the signal wire, there is a bias resistor in the ECU. This make the signal wire measure at slightly bellow the reference voltage (eg 4,8 volts with Vref at 5 volts).

[@moefuggerr2970]

Or jumper the sensor then try to start it.

[@JustinBeck84]

Always amazing Ivan .....it always amazes me with them so called shops who are literally just part pickers do this crap do people and great cars meaning have them for months and months but still don't get it right and I use the part picker reference because being a professional as long as I have I've came to know who is a real mechanic and who is nothing more then a simple mis reading code part picker with some basic ase cert who don't care about anything but getting paid because real mechanics, you and me Ivan, care about 1st and foremost getting it right and right the first time and always except whatever challenges come our way and actually want to learn because it's what drive us to do what we do then in the end the money and happy car happy customer is just the cherry on the cake and the experience gained we store on our internal memory card and can't wait till we use it again or it helps with further progression on other vehicles ...... appreciate you brother seriously and watch ever video ever time and you taught me a lot and still keeping teaching me and the rest of us

[@Andy_Hinners]

has that car been repainted? There is turquoise paint on the shock towers.

[@PineHollowAutoDiagnostics]

Vinyl wrap 😂

[@GregThompson-u6g]

enjoying your series the last time i needed a map sensor i went to the local pick n pull in virginia beach trying to find the sensor it was gone on the first car i looked at but it started raining but did i find under the hood a umbrella opened it went to the next car the map sensor was on the top of the motor already pulled i had that sensor 3 years

[@B0xlife1]

$63,000 in 1993 is equivalent in purchasing power to about $137,550.58 today😮😮😂😂😅

[@harrylister804]

All that inflation is intentional so the Federal Reserve can pimp bonds that have a guaranteed return. Thieves need their credit card cut the #$%^@ up.