TBlaz8
Registered Member
how do i adjust the idle on my 1989 GMC Jimmy 350 v8?
CK5
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idle control
- Thread starter TBlaz8
- Start date
Reprogram the chip in the computer. 
The computer controls the idle speed. Someone sells a box that you can connect up that will allow you to bump the idle speed up and down in 50 RPM increments, but I can't recall who makes it. 
The computer controls the idle speed. Someone sells a box that you can connect up that will allow you to bump the idle speed up and down in 50 RPM increments, but I can't recall who makes it. 
