I have a 1991 chevy caprice and i have chang everthing but at one point i can pour gas into the top and it will start but now its not doing anything right now its not getting no fire at all i change...
Sounds like you spent a small fortune on fuel pumps. Don't keep trying to jump it to start. Take the battery off and have it charged up. No further tests will be valid without a fully charged battery.
Is it the computer? Always a possibility, but that should be your l;ast resort. You might change it and later find out it was a bad fuel pump relay, or something like that.
Lets go back to the point you put gas in and it fired off. ( Further cranking after that may have run the battery low enough that you lost spark.) A mechanic would next check if power was getting to the pump by checking the pump wire for power at the tank connector, when the engine was cranking over. If no power, pull fuel pump relay and check for available power on one terminal where relay plugs in. If power is ar the relay, swap relays and see if was a bad relay. If no help, further electrical tests need done before condemning the computer, wiring needs checked, grounds need checked, and the relay itself has one terminal that goes to ground. You be better off diagnosing the problem, or having it done, rather than throwing new parts at it. Try to get the pump working first, then if still won't start, check the injectors and injector circuit. And go back to check for spark-at this point having removed and replaced what you have, and jumping it, and cranking, cranking, cranking-if no spark, start by checking all fuses on the car.
Not much help, I know, but proper testing is the only way to find it.. Or just go ahead and change everything till you find it or are broke. Not being snippy, if I can help anymore, post back.
Dec 23, 2012 |
1991 Chevrolet Caprice