You need to do a battery load test to see if battery is good check to see if alternator is charging if that all checks out good i would look for a loose or corrected ground cable from battery to engine or frame to engine sounds like a ground issue to me or loose connection
SOURCE: cavalier dies
you need to find the fuel pressure release around the fuel rail press the little tab when the car dies. If there is no fuel coming out from that point, your fuel pump is going.
SOURCE: changed oil pressure switch,still no oil pressure
The fuel pump on that model runs through the oil pressure switch so that if the truck looses oil pressure,It kills power to the fuel pump to prevent engine damage.you need to find the cause of the low oil pressure reading(possibly a bad oil switch).That would be the cheapest place to start,or have it checked with a mechanical gauge.Good luck,
ChevRev
SOURCE: will start but rpm gauge jumps up and down then it dies
The problem you describe has NUMEROUS causes. Most common of these is a COIL is going bad. The RPM gauge gets its signal from the ignition coil/crank sensor circuit (could be either one OR could be the wiring between the engine control module (ECM) and the engine components. Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Once you do this and let us know what, if any codes are set, then we can go from there.
SOURCE: 2001 chevy silverado 4.8 gas gauge not working properly
Fairly common problem with GM vehicles. The sending unit in your tank has a small circuit board that an arm is attached to which moves up and down according to your fuel level. This circuit board and arm are not making good contact. Unfortunately the only good solution is to replace this part.
Testimonial: "thought probably that was it but better off replacing whole unit .i was for for gauge proplem thanks. "
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I added a container of fuel injector cleaner to the gas.tank and gas cleaner I believe . and it seemed to help for about 2 days and now its starting to dl it again.
I guess the ignition control module is testing under voltage (I think thats what he said) which could make it mis fire. is this true?
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