- - Very low idol
12-14-2012 08:55 AM
Very low idol
I have a 4.0 97 TJ stock and it's been like this for about a few Days now. Basically I'll start the jeep when i wake up so it'll be warmed up for when i leave and as I'm driving it'll have an extremely low idol and eventually it stalls.
The IAC (idle air controller) is what provides all of the engine's air when at idle RPMs & you're not stepping on the gas. It has a solenoid actuated plunger that moves in/out of a small hole in the throttle body to allow more/less air into the engine as controlled by the engine computer.
When it gets dirty, it can hang and cause low or high idle RPM problems. Cleaning it with some aerosol Throttle Body Cleaner and a toothbrush will normally restore it back to good operation. Clean the oriface its plunger fits into in the throttle body with cleaner & a baby bottle nipple brush.
It is only held on by a couple torx screws, you can complete this easy job in 15 minutes. :)