Why is my Chevy Suburban rough idle and stalling?

Why is my Chevy Suburban rough idle and stalling?

I ordered the part and when it came in I went to install it to find that the throttle body on my suburban did not have an IAC Valve on it (I have Pics). I climbed under the dash and put an adhesive spacer under the stop for the pedal and the problem is fixed for now. What is going with these vehicles? HELP!

What’s the idle rate on a Chevy Tahoe?

The vehical also seems to idle low 550rpm down to 400 and lower on occasion. I have attempted to locate the idle air valve but it doesn’t seem to have one in the location in the manual (on throttle body by altinator). I can only find what I believe is the Throttle position sensor in that location.

What are the symptoms of a bad idle control valve?

$0.00 1 Irregular idle speed One of the most common symptoms commonly associated with a problematic idle air control valve is irregular idle speed. 2 Check Engine Light comes on Another symptom of a potential issue with the idle control valve is an illuminated Check Engine Light. 3 Engine stalling

What causes the idle speed to go up or down?

The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. 2. Check Engine Light comes on

Why does my 2002 Chev suburban vibrate when idle?

My 2002 Chev Suburban has a slight tremor or vibration when it is idle or at a red light. I have replaced the plugs, and added gas treatment, but it still vibrates. It noticed it right after a fillup with 87 octane gas, and wonder if it is a gasoline issue.It has 52k miles on it, and otherwise runs great.

Why does my Chevy Suburban stall after backing out of parking areas?

NO DTC’s, NO CEL. Having a problem with stalling. It usually happens after backing out of parking areas when vehical returns to idle while shifting from reverse to drive. It then become difficult to restart. Also during this issue if vehical doesn’t stall it starts exibiting erratic idle.

Why is my Chevy Tahoe rough idle and stalling?

Typically, the temps have to be 40 degrees or below for this to occur. It never happens during the warm spring, summer and fall months. I replaced the fuel filter last fall and was told at that time by the local dealer that my burb has a flex-fuel motor and that this was a bit rare for this year model.

The vehical also seems to idle low 550rpm down to 400 and lower on occasion. I have attempted to locate the idle air valve but it doesn’t seem to have one in the location in the manual (on throttle body by altinator). I can only find what I believe is the Throttle position sensor in that location.

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