Question about 2000 Chevrolet Corvette

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Oil pressure gauge reads 80(pegged),,oil tepm is 207....car runs great

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Common problem with the sending unit on the LT1, pegs the oil pressure gage. You have to replace the sending unit and the intake manifold has to be removed to get to it. Get new intake gaskets I think PT#12533587 about $80 good guy price and I do not remember the PT# or price for the sending unit. sebring1962@yahoo.com

Posted on May 15, 2009

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It is probably the oil sending unit if you have access to a direct reading oil pressure gauge put it on and if oil pressure is reading normal replace sender

Posted on Nov 05, 2008

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1 Answer

Oil pressure gauge pegs at 80 PSI as soon as you turn the key on. I have replaced the gauge and confirmed the sending unit is working properly. Any ideas on where to look next?


Sounds like a grounded wire. Most senders change resistance to the ground circuit of the gauge. If it pegs there is no resistance to ground and probably a shorted wire.

Dec 31, 2013 | 2003 Chevrolet Silverado 1500

1 Answer

Oil pressure gauge goes to 80 and stays


Another gauge needs to be connected to the car to check that oil pressure sensor or the gauge itself is not the problem.

If an independent gauge shows the same readings I would suspect a sticking oil pressure relief valve.

Dec 28, 2012 | 2003 GMC Yukon Denali

1 Answer

I have a 2005 Silverado 5.3 L, the oil pressure gauge is pegged. When the engine is not running is goes back to 80.


i want you to do this , UN connect the oil pressure switch and let me know if this way can fix your gauge problem .

Nov 14, 2011 | 2005 Chevrolet Silverado 1500HD

3 Answers

The oil pressure gauge is going directly from 0-80.....as soon as you crank up the vehicle....Its running fine, no lights have come on, running smooth like normal, its just that the gauge in the dashboard...


It sounds like there is a problem with the oil pressure sending circuit. The oil pressure sender changes voltage according to the differences in oil pressure. If it is pegged all the way to the max, there may be a short (or open, depending on the way the circuit is designed). I would take it to a shop and have the oil pressure tested with a mechanical gauge first, just to be sure there isn't a problem with the relief valve on the oil pump. But if the oil pressure gauge isn't working properly, you won't know if there really is a problem with the oil pressure, and that could be catastrophic to the engine.

Feb 24, 2010 | 2003 Chevrolet Tahoe

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2006 Yukon Denali, oil pressure gauge malfunction


Most likely the oil pressure sensor is bad. Its located in the very rear of engine on top of bell housing area.

Oct 30, 2009 | 2006 GMC Yukon Denali

1 Answer

Oil pressure gauge reads 80 psi with engine off and pegs running


That is probably a defective oil pressure gauge or a broken oil pressure sender, it reads 80 psi just because that is the maximum value allowed.

Pressure can be verified by reading it with a gauge tool.
If you really have pressure over 70 psi when engine is running then start replacing the oil filter, and check that the oil lines from pump are not obstructed, if there is nothing in there then replace oil pump.

If instead the gauge reads 80 with engine off, that is a defective pressure gauge.

Feb 25, 2009 | 2003 GMC Sierra 1500

1 Answer

92 cherokee very high oil pressure


sounds to me like you have a bad oil pressure sinding unit

Feb 02, 2009 | 1996 Jeep Cherokee Country

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