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OT PLease Help!!!!!

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Old Apr 26, 2005 | 06:20 PM
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Default OT PLease Help!!!!!

I don't know where to post this, so here goes.

I have a 1996 Tahoe 4.3 4X. The engine stalls and I get no Check Engine light. I changed the fuel filter and it ran good for 5 days the it started againl today. Any one have an idea. It's my sons car for school, he's using my dd, which means I use the Vette and put on 100+ miles every day for work. Any Ideas? HELP
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Old Apr 26, 2005 | 06:26 PM
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Does it start again immediately? If not try smacking the bottom of the gas tank with a rubber hammer while cranking it, the fuel pump might be on it's way out.
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Old Apr 26, 2005 | 06:26 PM
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Check the fuel pressure. It must have at least 50 psi to open the valves on the injector.

Mike
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Old Apr 26, 2005 | 06:30 PM
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Default Thanks Guys

The car starts right up after stalling. It runs fast for a few seconds then drops to normal idle speed.
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Old Apr 26, 2005 | 06:31 PM
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Default Fuel pump

Also the fuel pump hums. (out of tune).
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Old Apr 26, 2005 | 08:29 PM
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Same thing happened in my GM truck. Fuel pump hummed loudly. Started, ran for a few minutes & died. Changed it out ($350+ from GM Parts Direct ) and all is well.
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Old Apr 26, 2005 | 08:48 PM
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Sounds like fuel pump.

I also have a customer with a 95 4x4 Blazer that had a similar issue and it turned out to be vacuum leaks: Main line out bottom/back of the intake, to the actuator under the battery tray, and some other line. He does a lot of offroad and we are actually on the second fuel pump replacement in about 100k miles since he has had it.
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Old Apr 26, 2005 | 09:00 PM
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I'm going to have to do the fuel pump. By the way, 214000 miles, second fuel pump. Everything else is original, even the spark plugs. Engine runs smooth and the plugs show minimun wear.
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Old Apr 26, 2005 | 09:05 PM
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You can ask the guys over here.
http://www.batauto.com/cgi-bin/Forum/db_TalkToMeV2.cgi
They usually know their stuff.
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Old Apr 26, 2005 | 09:17 PM
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Fuel pump.....they will usually hum quite a while before going out sometimes. I had one hum for six months one time before it went out...
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