Question about 1988 Chevrolet G20

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1988 Chevrolet G20 van alternator fan rattles, how to fix?

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The alternator needs to be removed,there is a nut,that holds the pulley,and the fan on the alternator that needs to be tightened up.

Posted on Jun 01, 2010

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I replaced 02 censor as pre bd1 code reader but service engine light still comes on and the van runs with a gallop


The gallop you say that is happening I assume is a cycling Normal RPM to High RPM condition. This is most commonly due to a problem in the Vacuum advance system or a loose or stretched timing belt/chain. Check the timing and see if that is fluctuating.

Jan 25, 2011 | 1988 Chevrolet G20

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I need a fan belt diagram chevy van 350 tbi -88


Be vary careful I think that it may have a reverse flow water pump. You can install the belt two different ways. Both will work but the wrong way will shorten you engine life a whole lot. Try your local library for a book on you car.

Aug 25, 2010 | 1988 Chevrolet G20

1 Answer

89 Chevy G20 Sports Van; All power shuts


Would suspect chaffed wire insulation grounding out possibly wiring harness running under the alternator bracket.

Feb 23, 2010 | 1985 Chevrolet Sportvan G20

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Whining sound from under van only when i push the gas.


The serpentine belt is the most common cause for whining sound when accelerating, try to understand if noise is coming from serpentine belt.

Also check power steering belt under steering column, and also the rotor and chain, thei do not make whining noise , but can make noise when accelerating.

The belt is first suspect.

Mar 26, 2009 | 1988 Chevrolet G20

1 Answer

Low power when accelerating


I thought the filter might be the issue here, on carb cars the engine tends to stall out with a plugged filter.

Mar 11, 2009 | 1988 Chevrolet G20

1 Answer

G,day own a chev van 1988 g20 5ltr, engin light comes on van running like a pig .Took to a auto shop code 11,12,come up not sure what thay mean any help would appreciated


I have a Chevy book covering that year. Code12 is the code that flashes to let you know the ECM is working properly and there is no problem. As to the 11 code there is none in the book for that number.

Aug 05, 2008 | 1995 Chevrolet G20

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