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How do you fix hesitation in a 1998 2 point 2 liter Sunfire when no error codes show in on board computer and have replaced plugs wires coil pack and crank position sensor?
Wiki User
∙ 18y ago
If the injector is running a lean you could experience a little hesitation. Most GM vehicles use throttle body injection and only have one injector. If it's gummed up you could get better performance by running a good injector cleaner with the next tank of fuel. If the O2 sensor is faulty you could be running a little lean. If the O2 sensor is over about 50k Mi, replace it. I asked the question, and fixed the problem myself, so am posting the fix for others. It turned out to be simple. It was the Throttle Position Sensor (TPS). It is on the throttle body and is attached by 2 bolts. There is also a wire connector. The whole thing is not much bigger round than a Silver dollar. New one was expensive, so picked up a used one for 20 bucks. Put it on myself in like 2 minutes. Runs like new now. Although the dealer had me agreeing to put on many things (sensors) before I took matters into my own hands. Wish I had done that first.
Wiki User
∙ 18y ago
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