WHAT SHOULD I CHECK NEXT FIRING OR GAS?
1992 Chevrolet Caprice • 173,000 miles
I have a 92 chevy caprice with 5.7 liter in it and and i have replaced the plugs,wires,rotary button and distributor cap and i still have a sputter in it which it may cut off when taking off or if i press lightly on the gas it may go i was wondering what else could be done or ckecked gas wise or firing wise??? thanks
September 19, 2012.
September 19, 2012.
Symptom indicates possible fault with the TPS or MAF.
No the check engine light is not on but if we unplug a sensor it will appear but when we plug it back in it will go off
I have been told my fuel pump regulator or coil pack could be bad also im wondering are those any indications also or and we moved the tps and the car change tunes is that a sign it could be bad?
How did you move the TPS? They are calibrated during installation and if it is the adjustable type, tampering with it can result in wrong signals being transmitted to the engine computer causing idling, startng and performance problems.
Disconnecting it does not really prove anything as the engine computer is programmed to guess the TPS position when signal from it is missing.
When doing diagnostics, guessing does not work. You need to start from possibilities and eliminate them systematically.
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