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Old 07-24-2003, 07:52 PM   #1
sovereignmk1
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Default E82 questions

I have a 86 GL wagon and recently the oil pressure guage has been moving from the top and bottom, staying at 85psi then dropping to 0. More recently staying at the bottom reading 0. Needless to say I'm concerned for the commuter wagon, though the engine still sounds ok (doesn't mean everythings ok though).

Side note -- It has been close to or over 100 degrees lately (checked coolant, it's good)

Any Ideas?

//M
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Old 07-25-2003, 03:58 PM   #2
SubyTechMaster
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It is common on the EA82 for the Oil Pressure to drop to 7 - 10psi at idle when warmed-up. You are probably seeing the higher pressure when the engine is revved or cold though you did not say. You may want to stick with a thicker oil in the summer temps (30wt, 20-50). As long as you have no lifter noise or lower end noise you should be ok though.

If however, the pressure is varying with no change in engine temp or speed, I would suspect the OP sending unit or gauge.
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Old 07-25-2003, 04:57 PM   #3
sovereignmk1
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Quote:
Originally posted by SubyTechMaster
It is common on the EA82 for the Oil Pressure to drop to 7 - 10psi at idle when warmed-up. You are probably seeing the higher pressure when the engine is revved or cold though you did not say. You may want to stick with a thicker oil in the summer temps (30wt, 20-50). As long as you have no lifter noise or lower end noise you should be ok though.

If however, the pressure is varying with no change in engine temp or speed, I would suspect the OP sending unit or gauge.

It's mostly once the engine has warmed up, the needle is pointing to 85 or sitting below zero, occasionally moving in-between the two. It used to sit @ 45psi when warmed up and everywhere I went (local runs or highway speeds). It only moved(up a little) between shifts near 3-4k rpm, but that was before the engine warmed up entirely. Is replacing the OP sender a job a DIYer with limited knowledge could do? Thanks.

//Mark
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Old 07-25-2003, 05:43 PM   #4
SubyTechMaster
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The OP sending unit is easy to get to, it's on the Oil Pump at the front of the motor. It is a pipe thread so you need to coat the threads of the new SU.
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Old 07-26-2003, 07:21 PM   #5
sovereignmk1
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Quote:
Originally posted by SubyTechMaster
The OP sending unit is easy to get to, it's on the Oil Pump at the front of the motor. It is a pipe thread so you need to coat the threads of the new SU.
Should I change the oil (ie empty the oil, put SU on, Refill oil) so it doesn't leak everywhere? Also, Coat the threads with........ Thanks!

//M
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Old 07-26-2003, 07:31 PM   #6
SubyTechMaster
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You may get some oil leaking out of the passage but you cannot avoid that even if you drained the oil pan and filter. It will not be much volume.

Coat the threads with a pipe thread compound such as Teflon Tape. The threads are tapered and if you over-tighten the SU you could crack the housing.
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Old 07-26-2003, 11:54 PM   #7
sovereignmk1
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Thank you much Jedi Master!

//M
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