Question about 1991 Chevrolet Astro Extended

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1991 chevy astro van

Hello my name is javier and i have a 1991 chevy astro van than has oil leak. how can i fix it my self

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Depending onn where it is and the condition of the leak. youu might need technician assistance

Posted on Jan 13, 2009

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First thing we need to do is locate the source of the leak.

Posted on Oct 23, 2008


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1 Answer

What is an 02 sensor upstream 98 astro van

02 sensor is your oxygen sensor, 98 chevy astro carries 3 oxygen sensor. i belived your bad sensor is on the passenger side by the exhaust manifold but if not try the drivers side all the oxygen sensor for this van are the same. you need to go under the van to replace it, if is to hard to get it out turn your van for five minutes then turn it off and try again, be carefull not to burn your self. the one close to the catalytic converter is the downstream oxygen sensor ok, good luck!!!!!!

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You should be adding oil from time to time.

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Hello I have a 1997 Chevy Astro van with a 4L60e transmission, yesterday I lost my transmission and found fluid leaking like a sieve from the rear seal on the transmission (where the drive shaft connects)...

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Mar 08, 2010 | 1997 Chevrolet Astro

1 Answer

Need to know how much oil to use

Your van is going to take about 4.5 quarts.( If I remember correctly ) But always check the dipstick.
Since your motor have some high miles on it, I would use non-synthetic 10w-30 oil that has the high mileage formula.
Synthetic will cause leaks on an old engine because the molecules are smaller and will go through gaskets easily.
High mileage formula will help recondition the gaskets.

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1 Answer

Oil Leak

there is a gasket on the oil filter .... upon removing the old filter you have to make sure that the old gasket came off .....if not then it stayed stuck in the filter housing . if the old gasket is there , all you have to do is pull it off with pliers !!!

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1 Answer

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