FIX!! Cadillac Rough Idle, Skip, Stall, P0300, P0171, P0174 FIX!!

Support My Channel! Paypal - [e-mail] / Cashapp - $cdarnau
Parts -
Manifold Coupling - amzn.to/2BCEcpI
Manifold Gaskets (better) - amzn.to/2BSd0jP
Manifold elbow - amzn.to/2KsdkgP
Tools -
Fuel Line Disconenct - amzn.to/2BS14i4
3/8 Ratchet Set - amzn.to/2CY7mvM
Electric Impact driver - amzn.to/2BSNRW2
Pick tool - amzn.to/2BTutbH
Torque Wrench - amzn.to/2BQhVSd

[@chrismunos7741]

Nice to see a Professional. No stupid music, just knowledge. Thank you!

[@fuadyaqubian5940]

This guy is great. He explains it very well! I wish more mechanics were like him. Usually all they want to do is a quick fix. This Gentleman is detailed and explains the whole procedure very well!

[@Tom-wq2mz]

This macanic is on point. Apparently he's repaired a few of the notorious 4.6 Northstar plenums in his time. Good work. I done my aunt's 2003 Taurus about the same. I hope I've never got to dig into my 1998 Cadillac Deville Concours like that. Thumbs up

[@ontherun365]

Thank you for taking the time to do this. I have a torn elbow on the PVC tube, I would have never figured this out with out your video. Much obliged.

[@johnellyoung1925]

You made that look so simple than other videos I've watched you gave me the confident to go ahead and do my 2000 deville myself. Thank You

[@AdinoAdonai]

Most complete and professional removal and install of coupler I have seen so far 👏

[@jennyfry17]

This was a excellent video and saved me a ton of money. Thank you so much for being so detailed in your demonstration. The lighting and camera work were very good, and I could easily see and understand what you were doing.

[@richardharris5279]

You are a Awesome mechanic and I would love for you to continue doing a great job in helping others who really can't afford to pay General Motors mechanic. Thanks Richard Harris.

[@raynazari2834]

Thank you for specifying exactly what tools we need. Much appreciate it. Also thank you for explaining everything so perfectly clear for someone like myself that is very slow to understand it. You are awesome.

[@ajanderson7014]

Very instructive. Thanks for doing this for not only myself, but the rest of the folks who haven’t. Keep on making these videos. You may just inspire someone to want to learn more! Kindest Regards

[@georgesmarz5248]

Great video. When my day comes in the future to do this, I'll be a lot more confident. Sure beats taking my Caddy to the dealer when now I can do this myself. Thanks!

[@godfamilycountry4211]

I'm having the same issue on my 98 Cadillac eldorado with only 67,000 miles on it beautiful car engines are pain in the rear end but this was so helpful and so thorough that it looks like I'll be tackling this job sooner than later thanks again for all your info 😉 new subscriber

[@Dshu23]

I ordered the parts needed and was able to follow the video step by step and fix the issue on my own! Thanks again for the video. Saved a lot of time and $

[@cdarnau]

Glad it helped! Make sure to Like and Subscribe! It really helps the channel! Thanks again for watching!

[@7115sugarhill]

@@cdarnau Would this work for my 05 deville rough idle smells of gas and I changed injectors and mass air flow sensor?

[@cdarnau]

@@7115sugarhill absolutely could. It's the same on your vehicle.

[@supervisor42]

The PCV elbow was broken completely in-two on my wife's caddy. I used a hose stuck in my ear to check the TB-boot and the back end of the intake for vacuum leak. No guesswork. When I put the other end of the hose where the elbow was at the back end of the intake, it was screaming. I cheated and didn't pull the intake, but replaced the plumbing to the PCV valve with a simple piece of hose. It was a pain to get the hose on the tube up in the 'black-hole' at the back of the intake, but it saved hours. Spark plug boot puller/pliers was the tool that saved the day. Can't thank you enough for the video.

[@fredjackson6576]

You said u cheated and didnt pull the intake up, explain again how did u reach that elbow WITHOUT pulling the intake? Its runs up in that black hole u mentioned, I'd love a video of you doing it..ive watched 3 videos and they got the intake off replacing it..

[@dewaynemaiden]

@@fredjackson6576 no way he did it the way he said you got one inch from the plenum to the power steering crap, plus the elbow is held on with a squeeze clamp

[@uncnothin]

You amaze me with the order you were able to run through that. That job is a bit over my head I'm an electrician not a mechanic about buddy I tell you what I admire the way you did it great job

[@troyboyle1226]

Much appreciate the details, the links, etc.. Very well explained. Awesome video!

[@kuttinolaw1791]

I've learned so much in this video that I feel like I should pay you! Great job!

[@Chance1978ric]

You gave me the knowledge to go to my mechanic with confidence. Thanks.

[@carywollenweber4484]

Thanks Chris ! A superb job and done in great detail in this video rather quickly to fix the rich & lean run & idle on this car by changing out the coupler and intake manifold gaskets. Your a fine mechanic !

[@richardhenderson7146]

Thank you for this video. I purchased the parts and fixed my Deville. This saved me a lot of money.

[@cdarnau]

Richard Henderson glad it helped!! Make sure to like and subscribe! It really helps the channel! Thanks again for watching!!

[@jimamerica7419]

Well done sir! I have a Oldsmobile with the 4.0 northstar. Thanks for posting!

[@herysosa7097]

this guy is very good he explains and walk you through the entire process Thanks so much

[@sophia66404]

I have a 2004 and this video was great... And to find out were the starter is at😯 but those vacuum lines do crack I have to change mine every year... Cheap stuff nothing last.

[@miguelmoncada9481]

That's so cool, man! Thank you for doing an awesome job, helping explain everything and making it super easy to understand.

[@80aj]

Thank you Chris. You gave my Deville new life. Also saved me over $700 by doing this myself and using your links to buy off Amazon. Thanks again.

[@cdarnau]

Awesome! Glad I could help! Make sure to Subscribe! It really helps the channel!

[@daveb9211]

I can't thank you enough for posting this video! You saved me $1200! I thought for sure I was gonna have a stroke till this video showed that it's a lot easier than the dealership tells ya. Thank you again for this video!!

[@cdarnau]

I am so glad it helped! Make sure to like the video and Subscribe! It really helps the channel grow! Thanks again for watching!

[@ontherun365]

I did this full repair. Purchased all tools and materials recommended. I really appreciate the great video, there is no way i would have attempted this repair on my own. Thanks again!!

[@cdarnau]

Glad it helped!! Make sure to like and subscribe! It really helps the channel!!! Thanks again for watching!

[@ontherun365]

Quick question. After doing this repair all seemed well. However a few days ago the check gas cap message came on. I purchased and installed a new one gas cap, then cleared the code. it is back again and i have a rough idle as well. any tips would really help. Showing codes P0300, P0455

[@drfeelgordo]

This was a great video, very helpful. I followed step by step. I wish I would have removed the whole vacuum harness as moving around snapped some of the connections and part stores don't carry the hard tubing. I also had issues with the injectors with one spewing gas. Make sure everything snaps on cleanly.

[@fernandor887]

This guy is a true mechanic . Nice video thank you

[@cdarnau]

Thanks for watching! Make sure to LIKE and SUBSCRIBE! More videos coming soon!!

[@antoniojimerson2095]

Thanks, this is awesome and fixed my rough idle. Thank you for the help.

[@Silly_Sht]

great work and video editing and walkthrough - flawless bro

[@cdarnau]

Thank you very much! I’m glad you enjoyed the video!

[@J68browneyez]

I really appreciate these videos and it was from this video I changed mine last yr on my 2000 deville I just got a 05 and it has the same issue the boot torn vacuum leak,thanks to videos like these I don't never think about going to no mechanic shop or dealer to do nothing that I can't do myself and I put in a new starter. She running like I took it to the dealer to get done. Thanks to KZbin..lol. The dealer.. Aka The stealer.. They rob Ppl without a gun SMH charging all that money for simple shit you can do yourself.. SMH

[@cadillac9014]

Your demonstration really help me out my great job great video.👍😎👍

[@cdarnau]

Thanks!!! I’m glad the video helped! Make sure to like and subscribe! It really helps the channel! Thanks again for watching!!

[@joncarlyle7260]

Excellent video. Thank you.

[@gordoncontreras3665]

Great mechanics just simple English and plain instructions! Great teacher!

[@cdarnau]

Glad it helped! Make sure to Like and Subscribe! It really helps the channel! Thanks again for watching!

[@johnnyray88]

You are watching a professional mechanic at work who knows what he is doing.

[@cdarnau]

Thank you! I appreciate that!

[@MrBasiemsadat16]

You're the best bro keep up the great work

[@cdarnau]

Thank you so much! Positive feedback is such a blessing and it really means more than you know! Please make sure you Like and Subscribe! It really helps the channel. Thanks again for watching!

[@waynesanders1406]

Recommendation: put a few spots of gasket sealer between the IM and those gaskets to hold them in place for assembly so they don't fall off. Don't use super glue, it's not friendly on plastics (the manifold) and might cause premature wear on the new gaskets as well.

[@cyrysvonnachtseite4546]

Got to be a pro at the plenum replacement. Have a 01 Eldorado. Had to replace it twice since I owned it from 09. Plus did that on a few other models of caddy’s

[@melissadarnell6445]

Great Video! Pointed Me In The RIGHT Direction On MY P0171, P0174 & P0300 Error Codes!

[@stephenlacher587]

I think the PO171 and 174 are either the sensors on the axles or shocks. PO300 is a general misfire, not cylinder specific. Come be a coil problem.

[@adama4834]

Those codes are for lean condition bank 1 and bank 2

[@HARLEM430]

Excellent job and very detailed

[@cdarnau]

Glad it helped! Make sure to Like and Subscribe! It really helps the channel! Thanks again for watching! ▼

[@genegeneish]

I had an annoying vacumm leak for some time on my 99 eldo. Tightened loose (in my opinion) intake manifold bolts. No more leaky leaky.

[@johnnyrocket50]

I am having trouble finding these parts for a 1994 Eldo 4.6 any advice? Great video John

[@jeffjeff4477]

Great Video My 03 is surging at idle, leaning out Running good under acceleration I will check these things out Thank you

[@donaldcefailjr4501]

Can't say anything that hasn't already been said, Chris. Beautiful piece of work!

[@cdarnau]

Awesome! Glad I could help! Make sure to SUBSCRIBE! It really helps the channel!

[@barbiwiest8883]

Wow! Thank you for sharing this video. My car is riding rough. I have a 2003 Seville STS. In the video you mentioned the part that looks just like a "Spark Plug Boot", do you have a link to it on Amazon? Thanks again for this fantastic video!!

[@v2vortex]

I have a 90 coupe deville with a rough idle,, will check into a possible vacum leak thanks...

[@jameswhite1319]

Very nice work

[@mrjcp5520]

Thank you very helpfull

[@Frankie431]

A perfect how-to video.

[@73mrflex]

Awesome, step-by-step video Mr. Chris, love it thank you.

[@cdarnau]

Anytime.

[@stephenboehlke22]

“Intake torque spec is 89 inch pounds” Great video, thank you!

[@cdarnau]

Thanks for watching!! Make sure to subscribe!

[@UPRR-nq6uj]

Your Good Bro

[@darkone6599]

Great video

[@anthonyvenesky6742]

thanks been chasing this problem

[@cdarnau]

Awesome! Glad I could help! Make sure to SUBSCRIBE! It really helps the channel and I try to answer Subscriber questions first!

[@robertedwards1364]

You can tell you know what you are doing...but perhaps some more close-ups will help. Thanks for posting

[@tyeshawoodlen811]

I'm having trouble on take off. 2003 Deville DHS it keeps bucking to get out of 1st, 2nd and 3rd gears. Otherwise runs well. No check engine light on after changing the check valve and secondary air intake pump

[@therealgreenmonsta7264]

Excellent video. How much should this cost to be done by a mechanic?

[@EurekaRecycler]

Hi, if that rubber elbow cracks because of heat would it be a good idea to leave the silver plastic North Star manifold cover off? Thanks

[@lupitaramos746]

The fuel pressure regulator hose connects on top of throttle body right?

[@chicago1680]

Thanks for the video it took me longer to get that damn coupler positioned right then to get the manifold off. This was very east but I make things difficult and I hope you can help. I am throwing all types of codes and the car is going to reduced engine power. I checked all my connections too If there a way to get a hold of you instead of writing a novel on here? Thanks.

[@richmhwd]

Great tip . Recommend jacking car up to avoid ruining your back .

[@dieterschmied2929]

I'm new to KZbin; Where is the parts and tools list? The presentation was very good.

[@marquinnusbarbee2610]

Very helpful

[@cdarnau]

Great! I'm glad that it helped! Make sure you Like and Subscribe to the channel! It really helps me out! I'm always posting new videos. If you have any questions you can follow me on Twitter @cdarnau and send me a message. I always try to respond.

[@robertwall1838]

question, how to replace the L shape vacuum hose end at the intake.

[@ericl98]

Looks just like my Cadillac deville

[@testuser3167]

The torque wrench you used is vastly different than the torque wrench you linked to. I want a digital one with a flex head too! I've already got a few of the old-school click torque wrenches...

[@cdarnau]

You are right. The torque wrench I used was a Snap-On and it was around $700. for people not doing this on a daily basis it wouldn't make sense to buy something like that. The one I linked will work fine. If you want one like I have in the video this one is pretty much the same at a fraction of the cost and gear wrench makes great tools. amzn.to/4asitO3

[@benjaminchevalier7296]

Hello do you have replaced the fuel injectors? I have p0174 p0171 and p0300

[@williamallen2817]

I liked your video, I need to do this job next summer . My DTS is 2006, have had to tighten intake manifold bolts, in the past. Any thought of using blue Locktite, on bolts ? What would be the difference, between my 2006, and this DeVille, in the video ? Overall good video !

[@iMJ007]

William Allen im trying to figure out if this is the same for 2008 DTS

[@grantp4022]

Great thorough job, and very good presentation. It didn't take you that long to do this job, that looks a little complex to me. I have a Northstar Engine that needs this done in my 2001 Old Aurora ( 4Litre) and was wondering what a skilled guy like you would charge for a job like this, in US dollars ?? Looks like you did this job in 30 minutes, but it looks like your very experienced.

[@cdarnau]

The back takes longer to do than the front but the Olds Aurora has extra room to remove the back coils. At our dealership it would cost $300 + tax and that includes the parts and labor.

[@grantp4022]

@@cdarnau I guess that's 300.00 US, so that would be 375.00 Canadian, where I am. I just got quoted $ 125.00 to do the job from a very reputable machine shop, and was very surprised and happy. They just do engines, but I would bet my cost would be around $ 400.00 at dealership, and no garage would take the job on, as I phoned several, til I was put in touch with this machine shop. It's a little ways out to travel, but they have all great reviews on google. Your very skilled at doing that, and I told a couple people about how easy you make it look. I wish I had you to do this.

[@cdarnau]

@@grantp4022 Great! Just make sure they use ACDelco Plugs. Even if you have to buy them off Amazon or something and take to them If they use a cheap plug the vehicle will run terrible.

[@grantp4022]

@@cdarnau Just wondering Chris ? as an expert mechanic, do you think that the Dexcool coolant being used in earlier GM models Like Cadillac and Aurora causes the gaskets to deteriorate ? I'm thiniking of draining out the Dexcool totally in my Aurora, and going with a Universal type coolant. A machine shop in my area puts in the Universal in all their rebuilds. I'd love to know your expert opinion -thanks Chris.

[@cdarnau]

@@grantp4022 So the reason they do not use dexcool in the rebuilds is because Dexcool only helps if the engine is completely free of air/oxygen contaminates the system. This is why at the GM dealer we always Vacuum the system down to remove as much air and oxygen as possible. Once Air/Oxygen is introduced to the system the Dexcool starts acidify and cause rust and corrosion which can in turn eat away head gaskets, intake gaskets and cause low flow concerns due to rust build up in the system. Dexcool is only good for 150,000 miles. So if you're going to flush the system if definitely would not hurt to change the fluid. If you want to spend the extra money you could buy Evans coolant to fill the system which is a top notch coolant. I use it in all my restorations. Here is a link to it. amzn.to/3Csa37u Hope this helps and explains a little more in detail. Thanks again for watching!!!

[@deapozol]

I have a 2011 DTS and have both the P0171 and P0174 codes on my car. The check engine light comes on for 2 to 3 days then comes off. The car has been at the dealer three times for this and they cannot figure out the problem. They said the cars fuel pump was checked and intake manifold gaskets were replaced. When I mentioned to them if they inspected the boot on the side and intake hose from the inner elbow the advisor said they checked all that already and that it was good. What else should I do? My car has 74,000 miles on it and still has 2 year platinum coverage warranty. It runs good and all and the idle is good it's just the check engine light coming on and then off after being on for a few days. The check engine light comes on more when the temp is cooler out and not as much in the summer. Thanks.

[@davidreynolds4684]

Very good video. I couldn't see the clearance where the egr boot enters the end of the intake. I'm guessing it's impossible to remove the broken boot and install a new one without completely removing the intake manifold?

[@cdarnau]

No, You can do it in the car. It is just a lot easier and a lot of the time you need to replace the Pentium boot as well so you may as well pull it.

[@davidreynolds4684]

@@cdarnau I've got one showing lean on 2 cyl second bank account to onboard codes. Frank kent cadi showed lean on 1 and 2 both banks and want over a grand to fix it. That's insane for the intake gaskets and boot. Shouldn't be more than 350.00. They charged 195.00 to "run diagnostics on the ac. It gave the lean codes at the same time but they charged another 195.00 to run diagnostics for that as well. Freon line bad and they want 1200.00.

[@Dextrizzle]

What is that PCV boot called? Is it part of the manifold elbow set? Also, I remember having to replace a small elbow UNDER the boot at one point when I was throwing a code and getting too much air in causing it to rev several years ago. Any idea what part that might be or a part number for it? Otherwise, this was a GREAT video and made it way easier to approach, as I have been putting off this repair for about a year now. Living in a state with emissions testing means that I haven't been able to legally drive it for a year either.

[@cdarnau]

General Motors, Tube, 12573068 amzn.to/2xd602P

[@johnnylara8502]

what kind of lube did you use on the port holes

[@Happy4Go2Lucky]

In Denver the only auto parts store to carry the elbow was Napa. That elbow is not available at advance auto parts ,O’Reilly auto parts, or AutoZone. I replaced the elbow in 2020. It’s 2020 June 22 and I replaced the boot on the end of the intake manifold that connects to the throttle body. I got the three bolts tightened up wonky, not Flush, and I have a gap where I can see one of the pins lower front so there’s a gap between 2 aluminum brackets. Worse than that I burned up the brakes driving 10 miles no 6 miles with the throttle position sensor stuck on the highest setting. I had to turn the car off at stoplights to keep from crashing into the cars ahead. Then it was hard to start the car. I left home, drove a few miles and the car died at a stoplight the idle dropped from 750 to 250 100 zero. After fluttering the accelerator I got the car started and got it into gear but it stayed at 3850 RPMs. I had to use the brakes to drive. It was horrible. At the end of 6 miles smoke was coming out from the brakes. I couldn’t even stop the car to pull into the driveway. So I turn the car off with both feet on the brakes. After talking to a mechanic who suggested that the throttlebody might be misaligned I took a visual look at the connection to the right of the new boot and discovered that one of the alignment pins lower front was showing which means that the whole throttle body is misaligned to the right of the stationary bracket mounted to the engine. The boot to the left does not seem to be the problem. But I’m getting an error code P0101 for mass airflow sensor and throttle position sensor P0121. Previously the only check engine light was the error code P0405 exhaust gas recirculation position sensor circuit. So now I am stranded on June 23, 20202 1/2 to get tools to reposition the throttlebody to the intake manifold. I don’t know if the throttle position sensor has slipped out of place or what the hell is going on. Further note when I put everything back together I forgot to tighten the 8 mm hose clamp on the air intake where it connects to the aluminum throttle body housing. Then I discovered that the hose clamp around the mass airflow sensor had been loose the entire time I’ve owned the car since Christmas 2018. At least the throttle position sensor was not a problem with the loose air intake. Oh and I put the cover over the top of the engine that I had removed because it trapped heat and rotted out that rubber elbow by the power steering pump. Here in Denver we have very little rain. Driving in snow with red roads a lot of road grit could get loaded up on the intake manifold on the plastic body where the fuel injectors poke through. That was the reason for putting the cover back on. The cover is to help keep dirt away from the fuel injector holes in the plastic intake manifold sometimes called a Plenum. Well that steel plate on the rubber boot to all the right of the intake manifold seems to be the source of the rubber cracking. It seems to be a terrible design. I got the dorman boot and blue gaskets. The gaskets would not stay in the grooves. The gaskets kept popping out so I knew there was no way the gaskets would work. So I reused the old gaskets. The Felpro fuel injector O-rings did not include the little plastic rings at the bottom of the fuel injector that keep the spacing of the O-ring proper. So that was a complete waste of money buying Fel-Pro O-rings. Sure the old O-rings were somewhat hard from heat. Really the biggest problem was the rubber boot with a crack going halfway around that could not be seen till it was removed. Now I’ve got these other issues. I’m wondering is there a gasket between the two metal aluminum brackets of the throttle body? I have FIXD to view the check engine light codes. The dash light does not disappear after resetting the code right away. So I thought I had the vehicle fixed and the light will go off after 25 miles. There’s got to be a better way to test my work and be sure that the check engine light is not on. I really got hosed driving across Denver and now I’m stranded with no tools. I hate to tow it to the dealer and pay $1000 ransom. So the order of the day is to re-tighten the bracket on the boot to the aluminum throttle body and get the spacing proper.

[@jameswhite1319]

Sir did you fix your Cadillac? Mine is doing the same thing

[@Happy4Go2Lucky]

@@jameswhite1319 The problem is the rubber coupling from the aluminum throttle body to the plastic plenum, if left dry when fitting will pucker, creating a huge air gap. I solved the problem by using silicone lubricant in a spray can. Also the gaskets want to fall off if you do not clean all the oil off. I use brake cleaner on the gasket grooves of the plastic plenum. This design is ass backwards from Dodge which has the gaskets facing upwards. Having the gaskets face downwards makes it risky business to put the plenum assembly back in place. I had to give the plenum a 1/8 twist two-seat the rubber gaskets in the plenum grooves on the aluminum intake. The silicone lubricant made the rubber boot 🥾 slide on the aluminum throttle body effortlessly. I did this job 4 times. Two 2;of the boots puckered and were returned as defective. With a cordless ratchet and quarter-inch sockets to remove the fuel rail and plenum bolts, the job takes between two and four hours.

[@Dzonemp]

My wife's Cadillac Deville 2004 4.6L Northstar has the same error codes. The local shop (an hour away) decided that it needs a mass air flow sensor. After watching your video and a bunch of other ones, I pretty much think they are wrong. Going to order the seals and fuel injector o-rings and see how it goes. Oh, and they quoted my wife an hour and a half to change just the mass air flow sensor? Looks like a thirty minute job to me. Am I missing something? BTW your video was the best one.

[@GentlemensAcademy]

Are you in Florida? I just need you to come over.

[@jolontaholmes8590]

Hey my name T I just brought a 06 caddy Dts from the aunction and it look pretty good but after like 5 to 6 minutes of the car being on I smell a burning smell and see white smoke come out my vents my check engine light not on I can’t really put a finger on the problem anyway suggestions for me?

[@Dman90]

Might as well do ur vale cover gaskets if u need to

[@dontblameme6328]

Thinking out loud with the keyboard here... Since parts like these are usually disintegrated due to heat exposure, have you ever tried insulate it or fabricobble some kind of heat shield from foil tape to reflect heat away? Maybe a piece of fiberglass heat shielding tubing over the rubber. ?? I'm just always looking for ways to improve longevity of silly things like this.

[@cdarnau]

Jay Vee I have never tried it. But it is really surrounded by heat because it is in a circle Cup of the intake. But I understand exactly what you’re saying.

[@isaiahmichel7659]

If my Cadillac is throwing P0300 and p0300 PD what should I do first?

[@jimdent351]

Is it true that the head bolts on the 4.6 Northstar have a tendency to stretch and need replacing?

[@d.c.3220]

Some earlier models had issues with narrow threaded head bolts installed and eventual head gasket failures from the head bolts becoming loose. They updated the bolts in 2000 and even better was 2004 and onwards.

[@sonofthunder.]

moms car was stalling we did a injector cleaning ,but it ended up needing crank sensors 2x,its a 03 deville, I just did the oil pressure sensor ,and adapter gasket,,it only has 60k,so I'll see about that PVC boot,and throttle boot ,I have noticed a rough idle ,but only once inawhile,thanks fir the video ,I think I can handle that,keep em coming

[@cdarnau]

I am sure you can! I am glad these videos are helping! Make sure you Like and Subscribe to the Channel. It really helps! Thanks again for watching!

[@joseluislegarda8378]

Did the gaskets fell off again for second time?

[@atFullStrength]

Exact problem I just had with my 2004 Cadillac DTS. Never would have guessed it was the manifold to throttle body boot. And it's actually called a (plenum). What? The whole car fixing world calls it a rubber boot.

[@TATTDIS]

Would that pcv hose cause high idle code p0507 I was trying to find a vacuum leak moving and spraying around hoses and that same line broke just like that. I didn't want to have to do it but it looks like I'm going to have to attempt this myself without this video I'd have no idea so thank you.

[@cdarnau]

You get it fixed? I am back? I try to help the people who SUBSCRIBE first!!

[@7115sugarhill]

Would this work for my 05 deville rough idle smells of gas and I changed injectors and mass air flow sensor?

[@cdarnau]

You get it fixed? I am back? I try to help the people who Subscribe first and that's you!!!

[@lanitrascott]

Would it be possible that with those codes that it would be fuel pump problem?

[@cdarnau]

A fuel pump could definitely cause the low fuel trim codes.

[@jomfrulysetsfall2119]

I got 96 DeVille comes up with P0174 code the work u just done would this delete the code

[@davidreynolds4684]

Would silicone grease be acceptable on the gaskets to help them stay in place if used sparingly?

[@cdarnau]

It would be fine.

[@davidreynolds4684]

@@cdarnau thanks. Is it a "thing" with those intakes to get the gaskets wonky where you may have go back and adjust the gaskets due to them shifting around when installing? I caught a thread on the cadi forum where guys were talking about doing that

[@cdarnau]

@@davidreynolds4684 the cheaper gaskets are trash. Not gonna lie. They will work but they will be wonky for sure and soooo aggravating to stay in place. Sometimes the kit is cheaper than just the plenum by itself so gaskets come with the plenum. Those go right in the trash and I spring for the GM seals every time. They stick in there solid. They are a little more expensive but with the peace of mind you will save from the aggravation

[@davidreynolds4684]

@@cdarnau I havnt done one yet but prob next week. They looked like silicone or was that an optical illusion? The deville got 2 lean codes. 2nd cylinder both banks. It runs perfectly. My first thought was the egr tube elbow. The car isn't here so I'm not sure if that's the issue or not but I was looking how to swap it out and it said pulling the entire intake. I couldn't find an exploded view of that end. From videos I saw it looked like there should be room enough to r&r the elbow wo having to tear the entire top off the engine. I can't imagine them making it so tight you can't get in there with a pokey tool and a big roach clip to get that elbow out. That'll make a man want to cut an opening for a door to enter the basement then plastic weld that sucker shut! A thousand bucks seems extremely high for that job. I don't have a chiltons for that car but it looked like about a 3hour job by the book and 2 hours in real time. Maybe I'm way off.

[@MrAwsomeshot]

is the northstar setup same way in SRX do you know?

[@TheBosslaady14]

Yeah most of the northstar motors are set up the same way

[@austinsanchez6380]

Dam what year is it I seen a couple already like it leaking same places?

[@cdarnau]

That was a 2004. This is known problem on these engines.

[@adamwhitt9349]

Same process for an 04 Seville SLS? Figure the same Northstar...

[@cdarnau]

You get it fixed? I am back? I try to help the people who SUBSCRIBE first!!

[@264roy]

I had same problem. Replaced boot which was cracked and elbow which was broke Runs worse now than it did. Help!!

[@phillipwaterman1]

can you drop a link on that rubber boot!

[@cdarnau]

Yeah I just use a spark plug boot out of the make your own spark plug sets. lol. The elbows work fine. But here is the dorman one. amzn.to/2NaYyZx

[@cdarnau]

Here is the GM replacement elbow amzn.to/2KsdkgP

[@marleyrasta8047]

How much to give my deville a full tune up

[@mikecaine2106]

I did it all myself had the same issues changed the plugs acdelco.. and still misses at an idol any ideas

[@cdarnau]

You get it fixed? I am back? I try to help the people who Subscribe first!!

[@godourcreatorschild4777]

How do you change the flywheel on 2004 cadillac deville with northstar engine

[@cdarnau]

You have to remove the transmission then remove the flywheel. I would also recommend resealing the engine when you have the transmission out. It just makes sense.

[@josev2851]

Yeeaaaahh!!!!

[@cdarnau]

Yeeaaaahh BABY!!!!!!

[@robbob5318]

On a 03 Deville, I have high idle at start up.all the time and high rpm wile driving.. and idea?

[@jameswhite1319]

Idle air control valve