# 2002 Chevrolet Tahoe died after new IAC **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, tahoe\ **Created:** [October 28, 2021, 2:12am UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263 "2021-10-28T02:12:56Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 28, 2021, 2:12am UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/1 "2021-10-28T02:12:56Z")
Car dies out right after start I put new idle air control valve and coil packs and wires and spark plugs and air filter oil change oil filter can’t find a loose hose ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 3:25am UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/2 "2021-10-28T03:25:11Z")
did you plug the connector back on the idle air control? ![image](https://global.discourse-cdn.com/cartalk/original/3X/3/5/35c1b765d52cf4a88089fecc4c454b99cb250731.jpeg) if you did retrace your steps to see if you missed something. you might have accidently removed a vacuum hose or wire. ---
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 28, 2021, 11:37am UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/3 "2021-10-28T11:37:08Z")
Thank you for your respons I checked all connectors and tryed spraying carb cleaner on the hoses to try and find a vacume leak and can’t find one ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 4:17pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/4 "2021-10-28T16:17:22Z")
did the new iac have a o-ring on it when you installed the sensor? if not you could have a vacuum leak there. ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 4:37pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/5 "2021-10-28T16:37:05Z")
first try cleaning the throttle body and if you disconnected the battery you can try this… [GM throttle body relearn procedure — Ricks Free Auto Repair Advice Ricks Free Auto Repair Advice | Automotive Repair Tips and How-To](https://ricksfreeautorepairadvice.com/gm-throttle-body-relearn-procedure/) ---
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 28, 2021, 5:28pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/6 "2021-10-28T17:28:39Z")
It didn’t have a gasket just a o ring ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 5:31pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/7 "2021-10-28T17:31:42Z")
yes sorry I meant a o-ring. ---
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 28, 2021, 5:34pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/8 "2021-10-28T17:34:00Z")
Yes o ring is in I don’t have torque wrench so it’s not torque to the right tension but I did tighten it as tight as I could ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 5:36pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/9 "2021-10-28T17:36:36Z")
were you having stalling problems before you did the work? will it stay running if you keep the rpms up? ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 5:39pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/10 "2021-10-28T17:39:06Z")
has the fuel filter been changed? [Where Is the Fuel Filter on a 2002 Chevy Tahoe? (itstillruns.com)](https://itstillruns.com/fuel-filter-2002-chevy-tahoe-7182633.html) ---
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 28, 2021, 7:25pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/11 "2021-10-28T19:25:39Z")
No it sounded like it wanted to die but never did and yes if I hold the gas a little it stays running ---
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 28, 2021, 7:26pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/12 "2021-10-28T19:26:43Z")
That’s the next thing I was going to try ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 7:37pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/13 "2021-10-28T19:37:17Z")
did you have a check engine light on before you did the work? if you did can you post the codes. ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [October 28, 2021, 7:42pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/14 "2021-10-28T19:42:24Z")
also, if you dont have a scanner, autozone and a lot of auto part stores have a loan a tool program. you would give a deposit of what the tool would cost new and you would get it back when you return it. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [October 28, 2021, 7:47pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/15 "2021-10-28T19:47:22Z")
If the engine doesn’t stall if the gas is slightly pressed, then it sounds like you got a bad IAC valve. Tester ---
**Author:** ![Scrapyard-John](https://avatars.discourse-cdn.com/v4/letter/s/f6c823/32.png) [@Scrapyard-John](https://community.cartalk.com/u/Scrapyard-John)\ **Post date:** [October 28, 2021, 8:06pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/16 "2021-10-28T20:06:47Z")
Might be the iac passages are clogged with carbon. Cleaning the throttle body like you mentioned would be a good idea. If that or another iac valve doesn’t work…post back and we’ll regroup. Suppose it could be a maf sensor issue, or fuel supply issue. I like the changing to fuel filter idea. Needs to be done periodically anyway. ---
**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\ **Post date:** [October 28, 2021, 9:47pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/17 "2021-10-28T21:47:45Z")
Maybe you need to go back over the engine closely to see if there is a vacuum line disconnected or cracked. At 19 years old that is not unheard of and with a manifold vacuum leak an engine will not idle or idle roughly if it does. ---
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 28, 2021, 10:08pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/18 "2021-10-28T22:08:39Z")
I thought it was a bad Arc valve also so I got a new one put in that didn’t help it at all I did clean out the throttle body that didn’t help it at all either well I did and I didn’t have a day off I have a scanner at home just the one gets from Walmart I’ll after work I’ll see if it gives me code ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [October 28, 2021, 11:53pm UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/19 "2021-10-28T23:53:51Z")
Good ideas above, that’s where to start. If none of them pans out, other possibilities : - battery/charging system/ground connection problem - faulty crank position sensor - serious vacuum leak (basic vacuum system check, and especially check pcv system and power brake booster). ---
**Author:** ![Danielle54](https://avatars.discourse-cdn.com/v4/letter/d/edb3f5/32.png) [@Danielle54](https://community.cartalk.com/u/Danielle54)\ **Post date:** [October 29, 2021, 12:11am UTC](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263/20 "2021-10-29T00:11:27Z")
I have 3 codes p0174 p0171 lean in both banks and p0102 valume air flow a circuit low [Next page](https://community.cartalk.com/t/2002-chevrolet-tahoe-died-after-new-iac/180263.md?page=2)