1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Oil Pressure Guage Prob.

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Old 04-20-03, 01:32 AM
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Cool Oil Pressure Guage Prob.

I just recently bought a 85 GS and I have noticed that twice the oil pressure guage has stopped working then after the car sits for 30 minutes or so and I get back in seems to work again. Any one else have this problem or know of a solution. BTW the car runs fine and has plenty of oil.

Thanks

it's my first RX and I love it!!
Old 04-20-03, 02:50 AM
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Check the wire on the pressure sender. Its on the drivers side of the engine under the oil filter and all that right on the side of the block. Theres a single wire that goes to it. Just make sure its clean and making good contact.

~T.J.

It looks like this:

Old 04-20-03, 02:04 PM
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and even if you get it working again.... expect it to be a little off. the stock oil pressure guages are known to be inaccurate
Old 04-20-03, 02:07 PM
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my oil pressure gauge measures clear off the charts once i start it maybe its time to get a new one
Old 04-20-03, 11:20 PM
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sounds like your wire is grounded out somewhere. check into it. it happened to me and i replaced the wire and now my gauge is off. even swapped the gauge and still won't go past 30psi. hooked a mechanical up to it and idles at 40 and goes up to 70 when i give it gas so i'm not worried right now. i'll fix it someday
Old 04-20-03, 11:33 PM
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Changing the wire to a wire with different resistance will cause the gauge to be off. Same with corrosion. If theres corrosion, there is more resistance, which would make it read wrong.

~T.J.
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