Low oil pressure light

2005 GMC ENVOY
185,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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BONJUL9134
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  • 1 POST
Car starts and will drive about 20 miles then low pressure , then off engine comes in and will start to overheat but not in the red just hotter than you'd like to drive it , has a clicking sound since mechanic at mom and pop shop "fixed the a.c. " wasn't fixed but belt and new fan and charged up and would randomly turn on and off as driving super cold when it did work it was a godsend but wasn't very long. Unfortunately and shop wouldn't take Andy blame or fix it , so low oil pressure was coming in not even a week after took it back and they're saying a need a new engine because signs of oil starvation and I was having to add a quart about every other week to two weeks then it just stopped one day then the oil pressure came on shortly after , what would you do ? Honesty the shop for me for 600 bucks and in the matter of 6 weeks I was there four times when it worked perfectly before going there , just stuck cars been sitting in garage for a few months and I don't want to have to buy another car as this one fits our family perfectly
Jan 22, 2020 at 10:17 PM
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KASEKENNY
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  • 18,907 POSTS
Unfortunately oil starvation does not happen in a matter of weeks. If you are adding that much oil for a long period of time then it has been starting for quite some time.

Here is a guide that will help with this:

https://www.2carpros.com/articles/high-or-low-engine-oil-pressure

If there are signs of starvation then unfortunately we are going to have to replace the engine or at least the bearings.

I also don't see how they would have caused this by working on the AC system so unfortunately this is just a coincidence.

Please let us know if you have other questions on this. Thanks
Sep 10, 2021 at 3:29 PM