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Old 06-30-2003, 01:18 PM
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Bouncing oil pressure

The other day I was driving home, when I noticed at an idle, my oil pressure bouncing approx +- 7 PSIG. The oil pressure pegs out as soon as you hit the gas, and usually idles @ 20 PSIG. The Temperature was about 90F here the other day. The oil was changed about 2 weeks ago, and the oil filter was purchased from Fast Lane. Does anyone know what would cause this and what do I need to do to fix it?


79 300 SD 90K

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Old 06-30-2003, 02:00 PM
The Warden's Avatar
Certified diesel nut
Join Date: Mar 2002
Location: Pacifica (SF Bay Area), CA
Posts: 2,946
If I remember right, it can be fixed by replacing the oil stem O-rings. I had that problem when I got the car, and lived with it...then, decided one day that I should replace the O-rings whiel I was changing the oil. I don't think I've had the bouncing since then...

Hope that helps some...good luck!
2001 VW Jetta TDI, 5 speed, daily driver
1991 Ford F-350, work in progress
1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual
Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D
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Old 06-30-2003, 05:14 PM
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Thanks. I was ready to prepare to pull the pan and oil pump.


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