Question about 1999 Chevrolet Cavalier
Posted by Anonymous on
That's what I was going to say Diagnostic test of the throttle sensor. A gummed up or intermittent accelerator cable would show up on the highway when subtle changes occur/are needed. It also sounds like you may still be in open loop ECM mode, so Google what sensors go active in a closed loop mode. The Mass Airflow Sensor is one and the Oxygen Sensor are two I'm positive of. If you are all warmed up and the ECM goes into closed loop then the list of input sensors would be very useful. At that point, if closed, the ECM is definitely seeing something that it feels needs over compensated to maintain smooth processing. Info like if it stays high reps or how long engine is running B4 putting in gear...are missing for true troubleshooting. ~~~~ Sc
Posted on Apr 09, 2015
Hi check all air pipe lines on and around inlet or induction manifold for damage or leakages . Check throttle sensor ,idle control valve or sensor ,throttle body might require servicing and adaptation with diagnostic equipment .If the vehicle has a manual acceleration system cable might be sticky or damaged.
Posted on Apr 05, 2015
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Posted on Jan 02, 2017
get someone to rev the car and see if the exhaust note sounds muffled!!! i.e blocked or bent if it sounds normal chech fuel pressure and more importantly fuel flow the guy with air flow meter was proberbly right
regards ray w QLD OZ
Posted on Apr 06, 2009
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