Question about 2000 Pontiac Bonneville

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2000 Bonneville oil pressure gauge reads 120psi???

My gauge goes to 120psi as soon as engine is started and does not move. Had oil changed recently

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Has it always been like that, or just since the oil change?

Posted on May 18, 2009

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Posted on Jan 02, 2017

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Has 358000 miles, just had leaks repaired. Twice since my oil pressure gauge reads no pressure but not all the time? Why


1. Oil Pressure Gauge Not Working You will notice this happens when your oil pressure gauge is not reading, whether the engine is turned off, idle or running. Try to step on the gas to rev up the engine. If the oil pressure gauge still doesn't change its reading, your gauge is busted. It's best to replace it as soon as possible because you won't have any idea if your car is already overheating or not.
2. Oil Pressure Gauge Reading Too Low When your engine is idle, the oil pressure gauge will have a low reading. When the engine starts running or when you're already cruising or on the freeway, your gauge's reading should have increased. If it stays on a low reading, then you now your oil pressure gauge is broken.
3. Oil Pressure Gauge Reading Too High Another common oil pressure gauge problem is when your oil pressure gauge is reading too high when your engine is idle or when it's turned off. Rep

Oct 24, 2015 | 2001 GMC Yukon XL

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Ticking noise from engine upon start up but eventually goes away oil pressure gauge doesn't move at all when started or shut off. Gauge stays all the way past 80! Help me please!


Since changing the oil sender made no change, dash gauge may be dead. Hook up cheap mechanical gauge to see what is really going on. Ticking when first started is probably a lifter and may not be a big problem. How many miles on engine?

Jun 24, 2015 | 2000 GMC Sierra

1 Answer

Oil pressure on Pontiac Bonneville 1999


Nope.

if your really curious you can remove the oil pressure sensor and install an oil pressure gauge. If the oil pressure reads steady on the gauge replace the sensor. The sensors are pretty common to fail.

Oct 05, 2014 | Pontiac Bonneville Cars & Trucks

1 Answer

Oil pressure gauge goes from 0 to 120 back and fourth when driving like gauge is broken had oil change recently


It sounds like the pressure sensor is defective and intermittent. Gas gauges will do the same when the resistive element is broken or the wiper is not contacting clean any more.

Aug 05, 2011 | 2000 Pontiac Bonneville

1 Answer

1984 nissan 300zx oils pressure gauge goes to


Sounds like an electrical problem, make sure the ground leads to the engine are good and the battery terminals are clean. It might just be a bad connection in the wiring harness try jiggling the connections to see if it makes the gauges jump when it is running.

Jul 20, 2010 | 1984 Nissan 300ZX

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Oil Pressure Guage


Oil pressure is read by the sending unit, not created by it. If you replaced the sender and do not see a minimum of 20psi there is something wrong inside the engine.Some people will tell you that 5psi is "safe". In reality, in an otherwise perfect engine it may be but in real world application, the 20psi number is the lowest I'd ever accept in any engine.(at idle) Running pressure is influenced by temperature and oil grade, but this should not vary dramatically.
It is best to attach a mechanical oil pressure gauge to the engine and in that way, you can read the exact pressure. If the mechanical gauge reads the same or very close to what you see on the dash, then the reading is correct and if low you will need further diagnosis to determine why.

Oct 20, 2009 | 2001 Pontiac Bonneville

1 Answer

Oil presure is at 120psi. Oil level ok, not over heating, no strange sound. Could it be the Oil sending switch. One last point, It started saturday and I have put on over 250 miles.


it could be the sender. hook up an manual gauge to verify the true psi..if it s 120psi you either have a spun bearing or blockage on the pressure side of the pump..possibly one of the passages on the lower end or a spun rod or main bearing somewhere.

bill

Sep 29, 2009 | 2003 Pontiac Bonneville

2 Answers

High oil pressure reading


Oil sending unit bad. Replace.

Mar 01, 2009 | 1989 Pontiac Bonneville

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