

| Subject: | Re: Installed VDO/PSI Gauge = oil light on at idle? |
| From: | Bobby K. Winter |
| Date: | Sun, 23 Mar 1997 20:38:10 -0500 |
Help. While on spring break this week I discovered the oil light and buzzer on my 87 vanagon. It was very startling given that I didn't know there was such a thing. I limped the van home(100 Miles). I hope I didn't fry something. The light and buzzer came on when the tach fell below 2000k. If I tapped the gas pedal the light went off. The first thing I did was make sure there was enough oil, there was. The van was parked for three months before this trip. Please tell what it all means. I don't have a owners manual. ANY Information will be appreciated!!!!! Kenneth Winter 87 vanagon 89 Cab 83 Jetta BusBoys@aol.com wrote: > > Hi Charles - > > Keep your sender where it's mounted. There isn't enough of a pressure loss > in the length of the VDO hose you're using to cause the light to come on > prematurely. > > VDO Dual Contact Senders, such as the one you're running typically come on at > 7 to 10PSI, so you're probably running at about 5 to 6PSI right now. > Considering the mileage (130K) on your engine, it's not surprising. > Clearance between the bearings (and the oil pump gears to the oil pump > cover) have increased over it's lifespan so it's to be expected. Although > the factory or Bentley does not say what the standard oil pressure at idle is > supposed to be, it's been generally acceptable to some to have about 7 to > 10PSI when fully warmed up. Problem is the VDO (and Stewart-Warner) senders > are built to kick the light on about then. In a fairly new and well cared > for older engine, I prefer to have my idle oil pressure at about 15 to 18PSI. > > No such thing as rebuilding a VW oil pump. But you can bring new life to the > pump by removing the pump cover and remachining it nice and flat, taking the > gear swirls out of it that's causing the clearance. Oil pressure should > increase a bit after re-installation. Use a new gasket and use only > Gasgacinch(tm) to seal it as this sealer is very thin, but seals very well. > There has to be a minimum tolerance between the gears and the pump cover for > the oil pressure to develop properly. > > New pumps are easy to find from us or at any FLAPS. Don't cornfuse the local > FLAPS by telling him you want a pump for a Wasserboxer - chances are he or > she won't find it in the books (unless they're looking in the right ones of > course). It's the same pump used on any 72-79 Beetle 1600 (VW# > 111-115-107BK) and they're not that expensive (especially if you don't say > Vanagon Wasserboxer ;-).....) Whatever you do, don't get the 111-115-107AK > pump 'cause the gear tongue won't be long enough to reach the camshaft that > is to propel it (this pump fit the earlier 1600 dual reliefs with the 3 rivet > camshaft [You have a 4 rivet-dished cam] - only used in 70 and most of 71 > Beetles and Buses). > > Just keep your eye on the gauge and try to ignore the idiot light until > you've finished moving and had a chance to get to the oil pump. Hope this > helps ya out. > > Jim > BusBoys@aol.com > http://www.c-zone.net/jim96003/busboys.htm
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