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First of great thanks to Bill Homer for
guiding me to the cause of my problem.
Long discussion of problem and solution to follow.
Had a serious oil leak, quarts in a short time.
Leak was on passenger side, back side of the engine.
Checked all the usual suspects - front seal, oil pump,
filler tube, oil level sensor, pan, oil filter.
Bill suggested the oil pressure switch. That was it.
Here's a discussion of what I did. First of all this
applies to a 2.0l turbo.
1) Location of the sensor. It's on the top of the oil filter housing.
It points vertically out of the housing fitted with a large
nut and a plastic portion about the size of the end of a finger
with a single offset brass tab connected to a plastic
wrapped braided wire. Very close to
where the oil filler tube passes, and very close to several
oil lines. Very tight place.
2) How I tested to see if that was the source of the leak.
I wrapped an old cotton dish rag around the switch and drove
about 10 miles. When I pulled the rag out it was clear that
a lot of oil had seeped through it. (BTW - I always keep a fire
extinguisher in my car.)
3) It is very tight to get at it. If you have thick fore arms
you may not be able to get at it. Bill recommended a deep well
socket, but I could not use one - I would have had to take off a
lot of stuff.
Tools needed. 1/2" drive kit, with at least 18" of extensions,
and a universal joint (2 would be better), a 22mm 6pt socket,
and probably a 24mm 6pt socket.
Take wire off the switch.
The original was a 24mm, I bent the tab down and used a regular
depth 6 pt. 24mm. Found the easiest way to hook things up was,
socket, universal joint and 3" extension. Once I got that seated,
I hooked up a 15" (10"+5") to the 3".
This brought the whole mess up between the second tube
(counting from passenger side) of the turbo and the firewall.
I tried a number of different
ways to get the socket seated, and that's what finally worked.
I think a second universal between the 3" and the long section
would have made things easier, but I only have one 1/2" universal.
Once that's hooked up - remove it.
Intstallation. Start with finger tightening until you're
sure it's in there right. Then reverse the process, but
replacements are 22mm. I carefully bent over the tab of
my new switch to fit a standard socket, and then tightened
it well (it comes with a new washer). Rehooked the wire
and test drove it. No oil leak, no oil can light.
Buck
posted by 67.175.128...
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