I found out with my Yukon that it needed a new IAC (Idle Air Control) Valve. The first timeit happened to me the dealership only cleaned it without replacing it, but it did it again, and I replaced it myself. Idles a great deal better now and doesn't sputter or idle down. Try that.AnswerI own a 2001 Yukon Denali w/a 6.0 Litre. Basically the same problem. Believe it or not, fuel injector cleaners are not enough to correct this problem. Pull the air intake hose off the front of the throttle body & use spray THROTTLE BODY cleaner NOT CARB CLEANER. Works like a charm!! Drive for a couple days & repeat. This is a very common problem on all Yukon's & Tahoes..
Thank you for the help I went with the Throttle body cleaner trick Worked like a charm gave me just enough rpm to keep the idle smooth and saved me alot of money for the Idle control valve
Go buy a Haynes Auto Repair manual for your car.
how to adjust idle on 2001 legacy
I have the same problem with my 01 yukon. I heard that cleaning electronic throttle may help. pls let me know if that solution works for you.
Why does my 2001 kia sportage idle rough?
The idle is computer controlled
It's likely that the idle needs to be adjusted higher, especially if it is an automatic.
The idle on a 2001 24 valve is computer controlled and is not adjustable.
Idle Will Kill was created on 2001-06-05.
Idle is automatically set by the computer with the use of an idle motor.
Hyundai accent idle speed
The idle is not adjustible. You may need to clean the throttle plate to improve the idle.
It is on the air intake near the left side of the alternator.