Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
No it did not start. it trys to catch but nothin. scratch the triad thing i do have to use my card.
A few days ago it did this after i had it on jacks changing out the ball joints. However after putting it in neutral and opening up the choke it started and ran rough for a few minutes. then everything was fine for two days. Then i go to start it this morning and all it does is crank with an occassional snort.
No i dont have a fuel pressure gadge. I may have to buy one. But check this out:
I just did a tune up last spring and I pulled my ditributor cap off and the contacts have black/green build up. is that normal? after only around 8 months?
I replaced the cap since it was the cheapest. But I did notice that when I took out my PCM and then tried to start it I had the same result. Is there a fuse or relay that might be bad that would stop the pcm from getting power?
ok,,lets not get a computer just yet,,,first check all fuses..then lets connect your fuel pressure gage ,,let your help turn the engine,,make sure the pressure don't drop below 60psi at all times..if the pressure drops down while cranking,you will need a fuel pump,,,,also,lets replace the rotor under the cap,,these rotors will sometimes burn a small pin hole in them and will short out,but will have some spark on the wires
let me know what happens..please print and use the info below
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CIRCUIT DESCRIPTION When you turn ON the ignition, the vehicle control module Vehicle Control Module (VCM) energizes the fuel pump relay which powers the fuel pump ON. The pump remains ON as long as the engine is cranking or running and the VCM receives reference pulses. If there are no reference pulses, the VCM shuts the fuel pump OFF within 2 seconds after the ignition was switched to the ON position or if the engine stops. The VCM also turns ON the fuel pump for 2 seconds when you turn OFF the ignition.An electric fuel pump pumps the fuel through an in-line filter to the fuel meter body assembly. The pump attaches to the fuel level sender assembly inside of the fuel tank. The fuel pump provides fuel pressure above what is needed by the fuel injectors. The pressure regulator keeps the fuel available to the injectors at a regulated pressure. Unused fuel returns to the fuel tank by the fuel return pipe.
The Vehicle Control Module (VCM) has integrated IC circuits that are fault protected; therefore, if a circuit has failed, the integrated IC may not be damaged. If that is the case, the IC will keep the circuit open until the fault in the circuit has been corrected.When the fault has been corrected, reinstall the VCM and check the circuit. Replace the VCM only if the circuit is still inoperative.Test Description The numbers below refer to the step numbers on the diagnostic tables.