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1988 Chev G20 van problems

James O'Byrne
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James O'Byrne

James O'Byrne 0

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I have a 1988 G20 conversion van with 5.7 litre engine TBI  automatic Rough surging idle and extreme hesitation on acceleration . Been through  2 different mechanics throwing parts at it

new distributor cap wires ,plugs ,MAP sensor,IAC, oxygen sensor, smog hose check valve...I'm DONE. Engine is still running like crap!  

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