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Date:         Fri, 13 Jul 2001 22:37:09 -0700
Reply-To:     Karl Wolz <wolzphoto@WORLDNET.ATT.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Karl Wolz <wolzphoto@WORLDNET.ATT.NET>
Subject:      Re: 86 vanagon Oil Pressure Switch
Comments: To: clerkin <clerkin@STUDENTS.UIUC.EDU>

By red, do you mean real dark red, or perhaps brown? If so, that is the .3 bar switch, which should go between the #3 and #4 pushrod tubes.

Karl Wolz

----- Original Message ----- From: "clerkin" <clerkin@STUDENTS.UIUC.EDU> To: <vanagon@GERRY.VANAGON.COM> Sent: Friday, July 13, 2001 8:58 PM Subject: Re: 86 vanagon Oil Pressure Switch

> I did this, and now I get both of the lights lighting up. I think something > might be really screwed up with how the wiring is done. When I removed the old > switch from the back, it was red. In the manual it says that the 1.8 bar is > white and the .9 bar is grey. Mine was neither of these colors. Any ideas on > what the red switch is for? > > Thanks, > Patrick > > > >===== Original Message From "Jay L Snyder" <Jay.L.Snyder@usa.dupont.com> > ===== > >The Dynamic Oil Pressure System isn't so dynamic. It failed on my '89 > >Jetta also. What I did was ground the high pressure switch wire to keep > >the DOPS happy. I installed a gauge to see real pressure and also wired in > >two lights so I can see what the switches are actually doing. The low > >switch (on the end of the head--this is a diesel) is "on" at start-up and > >immediately goes out at 5-7 psig. The other switch (at the oil pump) > >closes above 20 to 25 psig. I have a red-light for low switch (kaboom) and > >a green light (OKie-dokey) for the high switch. The dash light still works > >off of the low switch, I just don't get the obnoxious intermittent buzzer > >anymore. > > > > > > > > > >clerkin <clerkin@students.uiuc.edu> on 07/13/2001 01:59:15 PM > > > >To: Jay L Snyder/AE/DuPont > >cc: > >Subject: RE: 86 vanagon Oil Pressure Switch > > > > > > > > > >I'm definately putting in a guage, but I'd like to get it working for when > >my > >girlfriend or anyone else needs to drive it. Does anyone know the part > >number > >of the circuitry? In the Bentley manual it lists a dynamic oil pressure > >system control unit and a printed circuit. These must be two separate > >things. > > Any ideas on the part numbers? > >Thanks, > >Patrick > >>===== Original Message From "Jay L Snyder" <Jay.L.Snyder@usa.dupont.com> > >===== > >>It is probably your Dynamic Oil Pressure system circuitry that is bad. > >Put > >>in a frickin' guage! > >> > >> > >> > >> > >>clerkin <clerkin@STUDENTS.UIUC.EDU> on 07/12/2001 10:36:38 PM > >> > >>Please respond to clerkin <clerkin@STUDENTS.UIUC.EDU> > >> > >>To: vanagon@GERRY.VANAGON.COM > >>cc: (bcc: Jay L Snyder/AE/DuPont) > >>Subject: Re: 86 vanagon Oil Pressure Switch > >> > >> > >> > >> > >>OK well now I'm really stumped. The light flickers all of the time still > >>until it warms up. What happens is that the high pressure switch no > >longer > >>grounds at low rpm's when it is warmed up because of the lower pressure, > >>but > >>as soon as I go over 1500 it starts flashing again. The light flashes > >when > >>the switch is grounded, but not when it isn't. I think this is the > >>opposite > >>of how it is supposed to work? From looking in the Bentley manual, it > >>looks > >>as if the low pressure switch is open over .3 bar and the high pressure > >>switch > >>is grounded over .9 bar. Which is what appears to be happening on my > >>vanagon. > >> Any ideas? The only thing I can think of is that I might have fried the > >>pc > >>board somehow when installing the switch. > >>-Patrick > >>>===== Original Message From Karl Wolz <wolzphoto@WORLDNET.ATT.NET> ===== > >>>Is it possible that the wire is grounded somewhere else along its path? > >>>They're notorious for being singed by the exhaust. > >>> > >>>Karl Wolz > >>> > >>>----- Original Message ----- > >>>From: "clerkin" <clerkin@students.uiuc.edu> > >>>To: "Karl Wolz" <wolzphoto@WORLDNET.ATT.NET>; "vanagon" > >>><vanagon@GERRY.VANAGON.COM> > >>>Sent: Thursday, July 12, 2001 5:58 PM > >>>Subject: RE: 86 vanagon Oil Pressure Switch > >>> > >>> > >>> OK, well I put the switch in, but now the light just blinks at me. No > >>>buzzer > >>> or anything. It blinks at me all the time. It does the same thing > >when > >>I > >>> take the wire to the sensor and ground it. Isn't that what the switch > >>is > >>> supposed to do, ground at .9 bar? Does it sound like now the other > >>switch > >>>is > >>> bad? > >>> > >>> Thanks, > >>> Patrick > >>> > >>> >===== Original Message From Karl Wolz <wolzphoto@WORLDNET.ATT.NET> > >>===== > >>> >Yeah. Once you've done it three times n a week, it's real easy! > >>> > > >>> >Grab yourself a 13mm wrench and take of the water pump pulley. If you > >>do > >>> >this, you've got pretty easy access to the sender. The job is about > >>>8000% > >>> >easier if you use the correct tool, which is a deep well 24mm socket. > >>> >Easiest is to put the socket on the sender and then put the wrench on > >>the > >>> >socket. Due to space limitations, you're better off using a breaker > >>bar > >>> >instead of a ratchet. > >>> > > >>> >Once you've loosened it a bit, it should only be finger tight and an > >>easy > >>> >turn off. Some say you need to use a screwdriver to push the sheet > >>metal > >>> >out of the way, but I didn't really need to do that. > >>> > > >>> >Karl > >>> > > >>> >----- Original Message ----- > >>> >From: "clerkin" <clerkin@STUDENTS.UIUC.EDU> > >>> >To: <vanagon@GERRY.VANAGON.COM> > >>> >Sent: Thursday, July 12, 2001 12:28 PM > >>> >Subject: Re: 86 vanagon Oil Pressure Switch > >>> > > >>> > > >>> >> Well I got the right switch (the gray one) but I can't seem to > >figure > >>>out > >>> >> where it goes. Do you access it from above or below? There seems > >to > >>>be > >>> >some > >>> >> sheet metal that I cannot get out of the way to get to the switch. > >>Any > >>> >ideas? > >>> >> > >>> >> Thanks, > >>> >> Patrick > >>> >> > >>> >> >===== Original Message From Karl Wolz <wolzphoto@WORLDNET.ATT.NET> > >>>===== > >>> >> >Hi Patrick, > >>> >> > > >>> >> >You're dealing with two different animals here. > >>> >> > > >>> >> >The gauge sending unit screws into the low pressure outlet (.3bar). > >>>The > >>> >> >1.8/.9 bar switch screws into the high pressure outlet, which is > >>>located > >>> >to > >>> >> >the left of the main pulley and under the water pump. Installing > >>the > >>> >gauge > >>> >> >unit will not make your buzzer stop. You need to pick up a .9bar > >>>sender > >>> >and > >>> >> >replace the 1.8 bar with it. > >>> >> > > >>> >> >Karl Wolz > >>> >> > > >>> >> >----- Original Message ----- > >>> >> >From: "clerkin" <clerkin@STUDENTS.UIUC.EDU> > >>> >> >To: <vanagon@GERRY.VANAGON.COM> > >>> >> >Sent: Monday, July 09, 2001 4:34 PM > >>> >> >Subject: 86 vanagon Oil Pressure Switch > >>> >> > > >>> >> > > >>> >> >> I have a 1986 vanagon with an oil pressure light and buzzer which > >>>comes > >>> >on > >>> >> >> when the vehicle is warmed up and is above 2000 rpm. It will > >also > >>>go > >>> >out > >>> >> >> around 3500 rpm. The engine was rebuilt about 30k ago and the > >>light > >>> >came > >>> >> >on > >>> >> >> immediately. When the mechanic was called about the problem, he > >>>said > >>> >that > >>> >> >he > >>> >> >> must have put the wrong oil pressure switch in. It has been run > >>>like > >>> >this > >>> >> >for > >>> >> >> 30k without any problems, but I want to fix the problem (better > >>late > >>> >than > >>> >> >> never.) I decided to upgrade to a VDO guage and sender from the > >>Bus > >>> >> >Depot, > >>> >> >> but the guy I talked to on the phone didn't seem like he had any > >>>idea > >>> >what > >>> >> >was > >>> >> >> going on. He told me that they did not sell the stock switch, > >and > >>>that > >>> >> >the > >>> >> >> only thing they had was the VDO switch and guage. He also told > >me > >>>that > >>> >> >their > >>> >> >> VDO guage is not the dual guage (allowing both the idiot light > >and > >>> >guage > >>> >> >to > >>> >> >> operate) which is in contradiction to their website. In checking > >>>their > >>> >> >> website I have found both of these statements to be false, but in > >>>their > >>> >> >> defense, the man said Ron was gone and would return in a few > >days. > >>>He > >>> >> >said I > >>> >> >> should call him about any specific questions. Since I am still > >>>unable > >>> >to > >>> >> >get > >>> >> >> any answers at the Bus Depot I thought I would try the list. > >>> >> >> > >>> >> >> 1. Is the dual VDO guage set at .9 or 1.8 bar? > >>> >> >> 2. Is it normal for an engine with the improper switch to flash > >>>it's > >>> >> >idiot > >>> >> >> light? > >>> >> >> > >>> >> >> > >>> >> >> Thanks, > >>> >> >> Patrick > >>> >> >> > >>> > >>> > >>>


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