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1991 Westy Automatic, Engine oil leak
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flyboyaviator
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PostPosted: Thu Apr 15, 2021 1:45 pm    Post subject: 1991 Westy Automatic, Engine oil leak Reply with quote

My westy has develop an oil leak on the rear oil sensor, as I was driving to a camping site, stop for gas, and noticed that oil was on my rear bumper, I did che ck the oil dsep stick and was less than a quart low, a mechanic did an inspection today and he found the rear oil pressure with leaking, he said in order to get to that switch he needs to remove the exhaust, any advise on other things I should be looking for. Thank for your help.
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MarkWard
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PostPosted: Thu Apr 15, 2021 2:24 pm    Post subject: Re: 1991 Westy Automatic Reply with quote

It’s not easy, but the switch is replaceable with the stock exhaust and heat shield in place.
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djkeev
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PostPosted: Thu Apr 15, 2021 5:05 pm    Post subject: Re: 1991 Westy Automatic Reply with quote

You can see the sender in this photo.

The grey unit with the single terminal below the left pully.

It is tight to change it but not impossible.
Remove the water pump pulley, it gets easier.

Do make sure you get the CORRECT SENDER!
They all look alike but have different pressure settings. Color is a clue but not gospel.

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Wildthings
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PostPosted: Thu Apr 15, 2021 5:31 pm    Post subject: Re: 1991 Westy Automatic, Engine oil leak. Reply with quote

You might consider replacing the low pressure sensor while you are at it, as assuming they are the same age, they may well fail at close to the same time.

The low and high pressure sensors are not the same part number and as mentioned above they should be color coded to show which is which.
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djkeev
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PostPosted: Thu Apr 15, 2021 5:43 pm    Post subject: Re: 1991 Westy Automatic, Engine oil leak. Reply with quote

https://www.vancafe.com/Vanagon-Oil-Pressure-Switch-s/3394.htm
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Steve M.
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PostPosted: Thu Apr 15, 2021 7:42 pm    Post subject: Re: 1991 Westy Automatic, Engine oil leak Reply with quote

Yeah, those sensors sometimes will leak through the plastic center that holds the terminals in place.
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PostPosted: Thu Apr 15, 2021 11:22 pm    Post subject: Re: 1991 Westy Automatic, Engine oil leak Reply with quote

There is a reducer bushing which may or may not unscrew with the sender, if it does, transfer it to the new sender.

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flyboyaviator
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PostPosted: Fri Apr 16, 2021 6:32 am    Post subject: Re: 1991 Westy Automatic, Engine oil leak Reply with quote

I just love this site with all you guys have the answers, I think gowesty seems to have both high and low pressure, and the harness. Thank you'll for the quick response. there the possibility of getting some pictures to the other sensor location. Thanks gain.
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MarkWard
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PostPosted: Fri Apr 16, 2021 6:42 am    Post subject: Re: 1991 Westy Automatic, Engine oil leak Reply with quote

You need to remove the shield for the pushrod tubes on the left side of the engine. Has the potential to be a can of worms. Stock requires partially unbolting the exhaust from the head.

Unless it’s been off recently, I’d consider aftermarket shields that don’t require the exhaust to retain it. Check Overland. This way you could cut it free and leave the exhaust flange alone.

Edit. A well placed hole with a hole saw would give you access for a socket.
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