hooziewhatsit Posted May 20, 2011 Share Posted May 20, 2011 '88 GL, 220k miles. I was noticing towards the end of my last oil change interval that the oil pressure gauge was spending a lot of time at the top of the scale. Went ahead and changed the oil & filter (10w40, Napa gold filter), and now, unless I'm at idle, the gauge is still pegged at 85psi. At idle the pressure will come down to ~45psi, but then if I go to 1500 rpms, the pressure goes back to 85 psi. Also, my mileage has gone to ~20 on the highway Soo.. any thing in particular I should check first? I'm tempted to let it idle with 4 quarts of ATF to clean everything out. If it dies, I'll just have to throw the EJ22 in Thanks. Link to comment Share on other sites More sharing options...
tractor pole Posted May 20, 2011 Share Posted May 20, 2011 sounds like the oil pressure sender is going bad. or there is an intermittent short in the wire somewhere? my .02 Link to comment Share on other sites More sharing options...
987687 Posted May 21, 2011 Share Posted May 21, 2011 Hmm, oil pressure doesn't usually go UP as engines age. If it did we'd be hearing about ea82's blowing up into a cloud of oil instead of ticking lifters. If you ground the wire from the oil pressure gauge the needle goes to the top, you probably have corrosion causing a partial short. Lowering the resistance, causing a higher reading. Link to comment Share on other sites More sharing options...
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