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Author
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Topic: 93 gmc TBI 5.7 troubleshooting
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AR's BLK351FX
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Member # 10434
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posted
 
 
Sup guys need ur guys help who ever knos an workd on this motors is a tbi 5.7 rally van gmc .. Van was working fine no trouble starting wats so ever was working fine an out of no were it died .. U could turn it on but it won't stay idlen it will just die on its own i adjusted idle high an it would idle but once i put it in drive or rev it would turn off ..I changed the idle air control valve , map sensor , spark plugs cus they haven't changed tem in over 8 years lol The only way I could drive it if its if I have my foot on the brake an the other on gas ... I noticed wen I put it under a load the egr doesn't open but I changed that egr an still does the same crap .... Can someone pls help
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88 Turbo357w fox
03 mach 1
Posts: 200 | From: SOLEDAD | Registered: Nov 2010
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5.0 LsX
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Member # 10017
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posted
sounds like a fuel issue...clogged filter or injectors?
Posts: 1260 | Registered: May 2010
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AR's BLK351FX
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Member # 10434
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posted
I had a bad injector an I changed it an I replaced the fuel filter an it still does the same thing I changed o2 sensor an nothing
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88 Turbo357w fox
03 mach 1
Posts: 200 | From: SOLEDAD | Registered: Nov 2010
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Secnd2nun64
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Member # 1431
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posted
Spray around the throttle body with carb cleaner to check for leaks. You may have a bad throttle body gasket. Another item to check would be the coolant temp sensor on the front of the intake. Cheap fixes that can cause a big headache. ![[Wink]](wink.gif)
Posts: 1460 | From: CA | Registered: Jun 2002
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