This is topic 93 gmc TBI 5.7 troubleshooting in forum Tech Talk at Northern California Ford Owners .
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Posted by AR's BLK351FX (Member # 10434) on
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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
Posted by 5.0 LsX (Member # 10017) on
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sounds like a fuel issue...clogged filter or injectors?
Posted by AR's BLK351FX (Member # 10434) on
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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
Posted by Secnd2nun64 (Member # 1431) on
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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)
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