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2006 tahoe oil gauge going high to 80

Recently I went to check my oil and noticed after my last oil change they forgot to replace my oil cap. I luckily found it laying on top of my battery. I did not see any oil leaks and my oil is still full. But upon replacing the oil lid my oil gauge is now reading 80 which if maxed out. The gauge reads 0 when off and goes to 60 when idle but when i am driving it goes up to 80 on the gauge. Any ideas? Could it have anything to do with having my oil lid off for so long about 2,000 miles before I discovered this or is it coincidental? I'm wondering what could suddenly cause this.

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  • Cars & Trucks Master
  • 12,223 Answers

You must need to RUN the scanner/computer for easy diagnostic and fix it. See the diagram attached, and get some idea. God bless you
2006 tahoe oil gauge going high to 80 - b9ab1fe0-1913-491f-b525-d982e1b861cf.gif

Posted on Jul 17, 2013

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: 2002 Jeep Grand Cherokee 4.0L Oil gauge reading very high

If the weather in your area is colder than normal, your startup oil pressure will reflect this, essentially because it is much thicker when very cold. This high reading should drop to "normal" once it reaches operating temperature. This condition can also be caused by a sticking pressure relief in the oil pump, usually caused by sludge inside the engine. If you regularly maintain your vehicle and use good quality oil, this should not happen. The oil pressure sending unit is also suspect, but in your case, I would not put it at the front of the list. If oil is close to "change time" consider using a good synthetic oil (synthetics flow better at extreme temps) or using a 5W anything oil during winter months. (see manufacturers specs)

Posted on Jan 23, 2009

emissionwiz
  • 75822 Answers

SOURCE: Rough idle and check engine light is on

U can drive it for awhile, but u run the chance of overheating the exhaust system catalytic converter and causing a possible fire.

Posted on Mar 13, 2009

Molson02536
  • 3854 Answers

SOURCE: oil pressure reading in 2003 gmc envoy

No problem with the oil pressure, the norm is between 40 to 60. Anything lower then 40 you have low oil pressure and anything above 60 then you have high oil pressure which is caused by a blockage in the system.
What is common is the oil pressure gage fluctuating for the first 200 miles if the oil pressure sending unit is getting worn. Good maintenance will keep the engine clean and running good but the oil pressure sending unit is inexpensive and easy to replace. Next time you do an oil change you can have them change the sending unit.
Good luck and hope this helps. You can pick up the sending unit at Auto Zone and most auto parts store and will have the step by step to replacing it. If you do attempt to replace it. make sure you DO NOT USE any Teflon tape or silicon on the threads, they are tapered and need a good ground to the engine for proper readings.

Posted on May 28, 2009

01fordeb
  • 1033 Answers

SOURCE: 2006 suburban oil pressure gauge fluxuating

Most likely it's the oil sending sensor, located beside the oil filter. You can change it, just be sure to have old newspaper or rags laying around the area where you will work, because a little oil will be lost. The part isn't expensive, for mine on a Ford Expedition was around $35 and took 5 minutes to change. Just un-plug the connector going to the sensor, and a larger wrench will be needed, large (7/8, 15/16) somewhere in that range of size.

Posted on Jan 06, 2010

  • 59 Answers

SOURCE: low oil pressure 93 GMC P/U w/350 motor w/205,000 miles gauge

While engine is running, open the cover where you add oil to engine and see if you see a good flow of oil, if good flow, could be as easy as replacing oil sending sensor. got to realize that if poor maintenance history your engine may not be building enough pressure at iddle to move your hydraulic operated valves, only when you rev it up it will pump enough to run smooth. if running engine too long, you may cause more damage to other engine components such as crankshaft and cam shaft bearings. if you can spare a few bucks, have a good mechanic check your oil pressure with a mechanical gauge. another cheap option is to replace oil pump. last resort if you love your truck as much as we do,replace engine or rebuild it. At 205,000 this is a normal symptom, other than timing chain problems, most engines don't make it that far. hope this helps!

Posted on Mar 01, 2010

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