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Re: 91 c1500 stutter on acceleration
I see you said you replaced the coolant sensor in your first post – sorry my bad!
You are onto something. If the senor ground is bad it will run rich. All the grounds should test to be good.
The ECM and engine sensors ground at the front of the intake manifold under the front intake bolts/studs or by the thermostat.
It is common for the grounds at the front of the intake to be bad.
Check the grounds and move them to a better spot if needed.
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
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