https://fixkick.com/IDLE-AIR/fastfix.html
Start there. I replaced all hoses, eventually ended up completely blocking thermal IAC as its bad and only replacement parts would be as old as mine is.. and issue is hardened wax pellet, but you might just have vacuum issues or incorrectly calibrated TPS or bad ISC. So do everyting else first.
Also if you hear suction sounds in the cabin check the brake booster. Mine broke and caused high idle. You can pull the booster hose and block it completely with your finger / piece of wood to check if it helps.
Without clear info what year, model car you have you are not going to get much more help. Fixkick will ask you that anyways, so fill in the info there now.
Anyhow look all the easy issues first and wait for fixkick to answer.
Incase you end up having to block IAC there is away to do it without taking the EFI out. You must be extra cautious not to let the engine suck anything inside it or you risk damage to cylinders, pistons and valves. Taking it apart is safer.
My hacking starts from post #11 with a failure (it ingested some play dough.. so bad idea). Before you attempt any of this, you must have checked all other possible vacuum leaks or you might just fuck up working thermal IAC:
15# contains successful attempt. #16 has first DIY idle boost or "choke" for cold start. #17 I hacked a moped gas valve thingy to work as choke or elevated idle.
Ohyeah.. and original post on that thread has info example what you need to provide for fixkick to help.
https://fixkick.com/forum/thread-high-id...6#pid13976
Start there. I replaced all hoses, eventually ended up completely blocking thermal IAC as its bad and only replacement parts would be as old as mine is.. and issue is hardened wax pellet, but you might just have vacuum issues or incorrectly calibrated TPS or bad ISC. So do everyting else first.
Also if you hear suction sounds in the cabin check the brake booster. Mine broke and caused high idle. You can pull the booster hose and block it completely with your finger / piece of wood to check if it helps.
Without clear info what year, model car you have you are not going to get much more help. Fixkick will ask you that anyways, so fill in the info there now.
Anyhow look all the easy issues first and wait for fixkick to answer.
Incase you end up having to block IAC there is away to do it without taking the EFI out. You must be extra cautious not to let the engine suck anything inside it or you risk damage to cylinders, pistons and valves. Taking it apart is safer.
My hacking starts from post #11 with a failure (it ingested some play dough.. so bad idea). Before you attempt any of this, you must have checked all other possible vacuum leaks or you might just fuck up working thermal IAC:
15# contains successful attempt. #16 has first DIY idle boost or "choke" for cold start. #17 I hacked a moped gas valve thingy to work as choke or elevated idle.
Ohyeah.. and original post on that thread has info example what you need to provide for fixkick to help.
https://fixkick.com/forum/thread-high-id...6#pid13976