Date: Tue, 28 Aug 2001 08:36:24 +0100
Reply-To: Richard Stevens <resteven@BTINTERNET.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Richard Stevens <resteven@BTINTERNET.COM>
Subject: Re: Oil pressure gauge
In-Reply-To: <BB472955DE9DD411993300B0D03E7977B8478B@nwwmail01.nww.usace.army.mil>
Content-Type: multipart/alternative;
I too have an oil pressure alarm "fault". With my T25 1989 2.1l the
alarm blips in around the 2000 rpm mark and can be instantly reset if
the revs are increased above 2k. The oil pressure has been checked by
two independent garages and both confirm that the pressure is "within
limits". As a precaution the pressure switches have been changed on two
occasions.The circuitry has been checked and is said to be OK. I have
checked against the Bentley manual and yes its OK but the fault is still
there. There have been many other T25s with similar faults listed but
as yet I have not seen any solutions, in the meantime it is very
annoying to say the least. Somebody somewhere must be able to shed some
light in rectifying this problem! I did read in a magazine, issue three
of VW Camper and Commercial, that if the crankshaft end float exceeds
.007 thou then there can be a catastrophic pressure drop but without
removing the gearbox and freeing up the crank to measure the end float
how else can one check?
The problem remains but in my case it has been intermittent for about a
year now and the engine is still going
Regards.
Richard Stevens
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of Moritz, Thomas W NWW
Sent: 28 August 2001 00:02
To: vanagon@GERRY.VANAGON.COM
Subject: Oil pressure gauge
Our 0.3 bar pressure gauge is bad. We drove about 200 miles with the
oil pressure indicator light blinking and getting progressively worse
but not a peep out oil pressure warning buzzer. I made sure the buzzer
was still operating by pulling apart the electrical connector where the
pressure switch leads tie into the wiring harness, revved the engine to
2000+ and bzzzzz. Then I made a short jumper with 1/4" spade connectors
and connected the 0.9 bar switch back into the circuit. This kept the
oil light from flickering all the way back home. I felt safe doing this
assuming that the buzzer and oil light would warn me while driving down
the highway above 2000 RPM. This assumes that I don't have a massive
failure of the oil cooler or filter that blocks all flow to the engine
bearing.
My question is, if I can operate the vehicle without the 0.3 bar
pressure switch connected into the circuit, why can't I just replace
that pressure switch with a sender? Is a sender without an integrated
pressure switch small enough to fit in where the pressure switch is
currently located? Assuming I pay at least as much attention to the
gauge as I do to the red idiot light, am I putting our engine at risk by
doing something like this?
Thanks,
Tom Moritz
[text/html]
| 
