SOUND LIKE FUEL PUMP FAILING.
BLACK SMOKE RICH FUEL MIXTURE CAUSED BY BAD FUEL PRESSURE REGULATOR OR INTAKE VACUUM HOSE LEAK.CHECK FUEL PRESSURE REGULATOR VACUUM HOSE FOR SIGNS OF WET GASOLINE INSIDE HOSE IF YES FUEL PRESSURE REGULATOR NEED REPLACING.IF ALL IS GOOD DO A COMPRESSION TEST INTAKE VALVES BURNED OUT.
the obd 1 on board computer system i ground the B and A terminals look for code 12 check engine flash that will tell you if you had a computer problem or prom problem.
my neighbor did something with a 2 pronged tool n it didnt work...im going to check the fuel pressure tomorrow and check the connector on the puel pump assembly......i priced a fuel pump and it aint to expensive if need replacing.......
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Hello
A couple of questions.
1. Have you had the electronic engine control computer (ECM) scanned for fault codes or done a code using the check engine light "blink" method?
2. Has the fuel pressure been monitored at the fuel pressure test port on the top of the engine when the stall out occurs? This is a very important test.
sorry it took so long to get back but yes i have tried to chech it but the light dont blink.i even bought a gm lite flasher to hook up on the port and that didnt blink either.....and no i havent checked the fuel pressure yet but i shure will
Your answer was not any help. Please contact your local GM dealer for assistance on this.
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