1991 Chevy C1500 Idle Air Control Valve Replacement

[@jondouglas7806]

This was straight to the point and very easy to understand thank you 💯

[@gamesonly4171]

Dear colleagues; disconnecting the battery before any repair on a sensor is advisable in order to reboot the computers of any car.

[@billyhighfill]

Thank you

[@romansandoval5399]

What’s happens if you don’t disconnect the battery, because unfortunately I didn’t and the truck keeps shutting down??

[@gamesonly4171]

@@romansandoval5399 You can still try and disconnect the battery. Connect the 2 battery connectors together for a couple of minutes in order to reboot the car computer. Reconnect the battery. If this do not work it is possible that the sensor got defective due to installing it without disconnecting the battery.

[@gamesonly4171]

You have to reboot the car computer otherwise the car will not detect the new sensor. Normally this is done with the car scanner but if you don't have a scanner this is the only option.

[@rexracer537]

Thanks for the video. My 90 Cadillac Brougham has the same motor and issue, hopefully it helps me. If not at least it won't break the bank.👍🏻

[@joecat1973]

My 92 s10 gets 10 mpg and runs super rich, lots of power and runs good besides the above mentioned, I’ve changed everything except egr and o2 sensor which I did check and they’re working

[@JuanMoreno-l9n]

Change EGR . Promise you’ll notice a difference.

[@dubskulls9554]

Thank you so much this helped a problem with my truck but I still have anouther problem it idles fine when In park and I can even rev the enigne but when I put in in drive or reverse if I don’t step on the gas it stalls But if I get it to 10 mph I can drive just fine but as soon as I slow down to stop or turn it stalls do you know what it could be? I have the same truck as you it’s a 93

[@theblack_6.033]

Did you find out what was causing it. I'm having the same problem.

[@sega2229]

@@theblack_6.033 all new distributor would help had a buddy with a problem truck turned on but once in gear would turn off sometimes and it was only if he didn’t have his foot on the gas it fixed his problem

[@ironlionzion2265]

Egr valve

[@bablp6437]

If the control valve is blocked would this lead to a weak idle? My truck has been running way too low when stoped but seems to be okay when driving? Any ideas?

[@nicheroni3452]

Replacing all of the easy to access sensors fixed my low idle in my 5.0 TBI. MAP sensor seemed to be the one that did it and it's relatively cheap and super easy. Control valve and MAP sensor.

[@G2Grimm]

My idle on my truck after taking it to a old mechanics shop was somewhere areound 600 i think where before it would idle around 1500 with a bad throttle gasket

[@SekadaJones]

So I've replaced my map sensor, rebuilt the throttle body, replaced the IAC that you replaced in this cid, also did the injectors and fuel filter, new pcv. The vacuum lines are good and the motor has been rebuilt. I honestly don't know why it wants to still stall or have a decent idle until a stop light. It runs great but it doesn't. Didn't know if anyone had any thoughts

[@RogueKnight33]

Sounds like the problem I'm having...its killing me

[@SekadaJones]

@@RogueKnight33 I was told to go to a carburator set up and delete alot of the electronic stuff

[@RogueKnight33]

@@SekadaJones I figured mine out! It was the maf sensor!!

[@RogueKnight33]

@@SekadaJones I did also do a fuel filter too but positive it was my maf(map) sensor

[@SekadaJones]

@@RogueKnight33 thank you, I've done both of those aswell. Still acting up

[@deangebhardt1981]

Did you do a relearn procedure after installing the new IAC? 1200rpm is about 500rpm more than I'm seeing on my truck.

[@Mike_The_Hog_A_Nator]

My 02' Blazer ZR2 has always idled like this at cold start but kicks down after a minute or 2.

[@latamorewilliams6443]

I put a new one in the 87 Chevy g20 but it didn’t run correctly, 5.7 liter didn’t seem like it wanted to run correctly. Put old one back in it was ok. Am I doing something wrong? How to reset?

[@redwolfmaddox3986]

service engine soon light is always on. trying the paperclip method to get some codes

[@robs_garage0278]

I unplug the iac valve on my 92 gmc sierra iac valves are useless all they do is break and create problems

[@griffenatekevinbacon]

Would this fix a low idle problem?

[@romansandoval5399]

Where did you purchase the part from ??? Someone pls help, because I bought one at auto zone and it didn’t seem to work had same problem.

[@leighburnette]

I think I got this one from Rock Auto.

[@galactic25]

What does that dryer vent thing do that attaches underneath the air intake?

[@jordanfetch4191]

it takes some ambient heat from the manifold and directs it into the throttle body to assist in warming up the engine

[@daddydoc1115]

My 94 C1500 had random rpm surges when idling. Replaced fuel filter, a vaccum line, and ran Seafoam through the gas tank in case it was the injectors. Still happens. Was going to clean the MAF until I realized....theres no MAF🤦‍♂️. Anyone think that cleaning or replacing the IAC will fix it? Its not a huge issue, just annoying that half the time I stop at a red light, someone thinks I'm trying to race

[@johnsmith7676]

Sounds like a base gasket vacuum leak. Replace the gasket. Common problem. Can also be a vacuum leak elsewhere, but that sounds like a base gasket issue.

[@CarlosTrujillo-vh5dv]

I have the same issue on my 90 k1500 tbi idle will be normal then it spikes up after a while it will drop down back to normal..when im at a stop the truck will act like it wants to take off on its own...some people suggested getting a new gasket 4 the tbi carb or check for leaks on the intake manifold itself..i havent got to it yet..any suggestions what may be the problem

[@lht5dy31]

Put mine in today. Idle went through the roof. Did all correct resets and still was super high idle. Put old one back in. Normal idle Any ideas? I’m guess it’s a fault valve. The spring was low on the new and the old was up.

[@brayanbasalduamartinez9937]

Mine has this same problem what do I do?

[@lht5dy31]

@@brayanbasalduamartinez9937check the pcv grommet, if it’s cracked or old you’ll need to replace it. Idle goes back to normal

[@alanrives6731]

Your connector isn 't plugged in correctly.

[@lht5dy31]

@@alanrives6731 turns out it was the valve cover gasket last owner just shoved one in Replaced gasket. Perfect idle 😎

[@ObservingTheSus]

​@lht5dy31 why did the valve cover cause the issue? The gasket for the grommet

[@srgfamily]

Great video and nice looking truck. I have a 1995 C1500. What’s the air drier looking connection off the bottom of air cleaner assembly?

[@newendoria1232]

Cold start something I think

[@newendoria1232]

Got the thing on my 88

[@jordanwiley4582]

Heat riser. Funnels warm air off the exhaust manifold for cold weather starts. Not exhaust gas, just ambient heat.

[@williamarchie]

When I bought my truck 5 years ago started changing sensors aic,tb,map, temperature control,knock I'm finding the AIC about 2 years needs cleaned or changed ilove my k1500 1995 350 tbi I hate the sensors but the engine is kick ass also Didi differential fluid front and rear does anyone have problems with the brake safety switch what a pain in the ars

[@dennisthemenace7748]

They say that when this is replace needs to be recalibrate or reset is that true? U didnt show that or u didnt do that?

[@sega2229]

Just unplug battery for 5 mins no need to do anything but install plug in and first start won’t work at all turn it off then back on and it should work that’s what happened to me

[@D4Clout]

I have a issue while driving, after cruising for awhile it’ll get stuck at 150k rpm and I have to put it in Neutral an rev it a couple times before it goes back down.

[@ricomartinez6145]

150k rpm sounds like your engine would explode.

[@jerredwayne8401]

Fyi. These are easy to clean and they are way better parts than the overpriced replacements

[@billyhighfill]

Thanks for posting

[@spacedog879]

there is a wire harness disconnect for the a/c flapper door,, no need to remove any panels just reach under that area where noise is coming from and disconect it

[@leighburnette]

Problem is I want to actually fix it so I can run with A/C. Unplugging it only stops the noise.

[@lht5dy31]

What’s the wrench size ?

[@lht5dy31]

1 - 1/4

[@lht5dy31]

Or and adjustable

[@bustin_slugs]

Why is my idle to low how can I fix that

[@johnsmith7676]

Replace the IAC.

[@hb5914]

What is the average fuel economy on your van?

[@Jacespace23]

Did this solve your problem?

[@leighburnette]

Yep!

[@cyberdude721]

unplug computer advance while running and plug it back in idle will drop to around 600rpm

[@booboothefool3342]

It’s been 2 years, what happened?

[@leighburnette]

Well, truck is still running great. I replaced the AC blend door actuator and am 95% done getting the new LMC dash in and installed. Just waiting on a few small things.

[@AngelZize-it9cj]

Gracias por su video

[@JoseLopez-nv7tg]

Low idle is a good thing

[@karlboutin943]

If that was a lifter tap ad a qt of transmission fluid to the oil every change it will keep the lifter clean and right !

[@mqweihgbhkgfvj]

what in the absolute hell is that ticking?

[@barrygordon1173]

Unplug actuator...problem solved....

[@henkers420]

My 94 always idled around 800 to 1000. Recently on start ups it been idling real ruff, like the plugs or wires or something electrical is wrong. Isn't throwing codes yet, so i'm thinking it's some little dollar part. Just don't know what part it is yet.

[@robertasbell824]

My 94 Chevy k 1500 idled rough for about 10 minutes when you would first crank it up. I changed the 02 sensor and it fixed it.

[@maxjudd4971]

I had the same problem, was the knock sensor for me on my 90 firebird tpi

[@devinbard7412]

Common problem with idle on these trucks is your cap and rotor they tend to crack try replacing those

[@daddydoc1115]

I replaced a vaccum line and the fuel filter and it smoothed it out but I still get RPM surges, working to fix that now

[@jresquivel4499]

Dont forget to reset it ab terminal with key

[@jpmartin6191]

Can you elaborate more on the reset, please

[@bigdaddy69Z28]

that engine should idle at 750 rpm not 1200 you need new idle speed sensor.!

[@kyleguillot1163]

I was about to say the same exact thing! I drilled mine out and adjusted it ...helped but still alittle high. 750 is perfect! 1200 is still to high.

[@johnsmith7676]

The tach is incorrect. It's idling perfectly.