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How do you access the oil pump on a 93 Pontiac Bonneville 3.8 liter engine and how do you change it?


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2015-07-15 20:45:35
2015-07-15 20:45:35

your oil pump in located in the timing cover simply replace the timing cover. while your in there you might want to do the timing chain

You can replace the pump by removing it from the timing chain cover. There are five bolts that hold it into the cover. Remove them with a T30 torx socket and swap the pump gear/outer ring. Get a Haynes or Chilton manual to get the proper clearance specs and install accordingly. It'll be a little cheaper than replacing the whole cover.

I'd recommend changing the timing chain and gears as well, since you're looking at them anyway.

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on the bottom side of the engine.

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The oil sending unit is located on the 1981 Pontiac Bonneville 265 engine is located on the Starter Disable Kit.

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You can find a 2000 Pontiac Bonneville engine diagram at your local General Motors dealerships. Pontiac service manuals will also have the engine diagram and can be found at most local libraries.


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