Question about Chevrolet Suburban 1500

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I was driving, had a loss in oil press. I added oil. Pressure went up momentarilly then back down. I am thinking I need to change the pump and clean out the oil pan. Where is the pump? Thanks.

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The oil pump protrudes into the oil pan which is located at the very bottom of the engine; you should recognize it as a fairly large piece with screws/bolts all around the edge of it.
BTW, unless your vehicle has very high mileage, it may be the oil pressure sensor at fault; these are much cheaper and far easier to replace and unless your engine is much noisier than normal, the pump is probably fine but the sensor shot. I would replace it first since it will be under ~$30 to buy. Especially GM seems to have trouble with the sensors.

Posted on Aug 20, 2010

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The pump is in the oil pan, good luck

Posted on Aug 20, 2010

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The oil pump is located inside the engine oil pan, this pan must be removed to access the oil pump, this requires disconnecting the engine mounts and raising the engine off the mounts to get the pan out.

Posted on Aug 20, 2010

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Why won't my car start?


Sounds like your oil pump may have seized.You'll need a gauge to verify this. The engine has a mechanism by which it automatically cut the engine off if there's a sudden drop in pressure. I would replace the pump. If you do make sure you prime it prior to tightening the oil pan down. A big question is why you were that low on oil. Good luck!

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oil pumps are located in the oil pan area by dropping the oil [pan this shouls access the pump when you get the oil pump the parts outlet will bring up a diagram of your system get a copy

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1995 Mitsubishi Diamante is overheating. Oil pressure light came on - oil was low 2 quarts. Added oil, drove down the street, temp gauge went to Hot. Let car cool down. Drove home, check engine light came...


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2000 Tahoe ''check oil press'' light


Sounds like the oil pump went to me. Another issure I've dealt with is the drive ontop of the pump that makes it turn can shear off. Its not real common but I have seen it happen. Either way its a pretty major repair and the vehicle shouldnt be driven til its fixed.

Mar 05, 2010 | 2000 Chevrolet Tahoe

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It has low oil pressure, ticking sound,and loss in power


You are in need of a new oil pump, drop the oil pam off and replace the pump, DO NOT DRIVE THIS UNTIL THE LOW OIL PRESSURE IS REPAIRED OR YOU WILL NEED TO REPLACE THE ENGINE

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Feb 12, 2010 | 2001 Volkswagen new Passat

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'Check gauges" light comes on and oil pressure gauge reads zero.


The first thing I would definitely do there is change the oil. Used oil tends to loose lubricity and becomes thinner than it was when in the container. When hot, it becomes even thinner and will cause a drop in pressure.
Most jeep engines hold around six quarts of oil, so by adding what you did the new oil helped a bit but cannot correct the problem.
I would change the oil and use either a 20w50 oil with a pint of Marvel oil, or change to a good synthetic with a container of Lucas additive. It is possible that whatever oil you have been using is causing a carbon buildup that is beginning to block off the pump pickup screen. Either of the above suggestions will help with that. In engine oils, price is important...cheaper oils are high paraffin base which causes deposits to form.
You don't want that in your engine. Only exception is Wal-mart store brand oil which I believe is Quaker State (re-packaged). If you opt for a synthetic, it's not a bad choice and is cheaper.
Make sure you use a good quality filter. The filter is what keeps the oil clean and useful during its lifespan.
One note... If there is any tapping or knocking inside the engine, that is caused by internal bearing wear and should be corrected immediately. No oil can compensate for internal pressure loss and if caught early, can be repaired. (otherwise, later, engine will need to come out and be overhauled or replaced.)
Any pressure problems can be verified by installing an external mechanical gauge on the engine. That is the only way to know exactly what is going on with any degree of accuracy. (dash gauge is electro-mechanical).
good luck

Dec 18, 2009 | 1999 Jeep Grand Cherokee

1 Answer

2001 Jimmy shut down while driving. The ECM1 fuse blew. Replaced fuse and it blew. disconected circuits related to ECM1 fuse. reconected one circuit at a time. Fuse did not blow and Jimmy started. Why?


The first thing you should do is to locate the oil pressure switch/sending unit.

It's a single wire terminal with plastic connect sensor from the engine block.


This switch serves two functions.

1) provide oil pressure reading

2) disable the fuel pump relay in event of oil pressure loss.

===

When this switch is failing to provide the correct pressure to the ECU. The wiring harness can overheat and eventually create a short.

ECM1 fuse blow is because the harness is grounding/shorting.

===

DO NOT drive the truck until you change the oil pressure switch.

After you change the switch,you should spend sometime to inspect the wiring between the fuel pump relay,ECU and fuel pump.


Please post up day on the comment window/page.

I will follow up on it later.


Good luck.

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Check oil pressure gague came on and pressure dropped to zero.


i hate to sat it but you could need a new oil pump. hope this helps you.

Jan 05, 2009 | 2001 Jeep Grand Cherokee

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