Question about Jeep Grand Cherokee

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4.7L Grand Cherokee no oil pressure unless you rev engine

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Bad oil pump or excessive clearance in main/connecting rod bearing. However if you are getting this reading from the oil pressure guage. It may be FAULTY or the oil pressure switch may be bad bad. To check the actual pressure use an hand held oil pressure tester(looks just like a compression tester)Good luck and contact if you nee more help.Thanks for using FIX YA

Posted on Jan 17, 2009

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1 Answer

1996 jeep grand cherokee oil pressure gauge flutters car wont run


If the oil pressure is not above 5 or 10psi, the fuel pump will not get power. The engine should start and die.
The pressure sending unit may be faulty, or the engine oil pressure may be very low.

Jul 21, 2012 | 1999 Jeep Grand Cherokee

1 Answer

Oil pressure gauge goes up and down as I step on gas and brake but opressure is fine - Is there a switch I need to replace and how much does it cost>


Hi Guest,

This is normal. As the engine rev's higher the oil pressure goes up, revs lower, pressure lower.

Jeeps just use a more sensitive gauge than most.

Best regards
Mike

Jun 16, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Where is the oil pressure sensor located on the engine for a 01 jeep grand cherokee


4.0L - Location of Oil Pressure Switch - Rh side of Engine block above starter, 3 wire connector

4.7L - Location of Oil Pressure Switch - RH side of motor next to oil filter, 3 wire connector

Feb 10, 2010 | 2001 Jeep Grand Cherokee

3 Answers

OIl pressure is 0 at idle, warm or cold. It comes up as soon as you rev the engine. 1998 4.0 L Ford Ranger.


The gauge must be lying to you or your engine would be knocking and seized up on you by now,Replace the oil sending unit and this should fix you up.

Dec 19, 2009 | 1996 Jeep Grand Cherokee

2 Answers

My 1997 Jeep Grand Cherokee cuts off while I'm driving.


If you have zero oil pressure thats a BAD sign, first have a mechanic check what the engines actual oil pressures are.

Oct 31, 2009 | 1997 Jeep Grand Cherokee

2 Answers

Oil pressure gauge reads normal when first starts. as it warms up, gauge goes to zero. If I rev engine, gauge goes back to normal.


Two things...when it reads zero, is there any engine noise (tapping or knocking)? After you rev the engine does the pressure read normal at idle and function normally, or does it go back down? Either way, you should not drive the vehicle 'till you have a mechanical gauge (yours is electro-mechanical) put on there and the actual pressure is tested. The condition may be a bad sending unit, a bad bearing or possible obstructed oil pump screen. The repair is obviously different for each one and the price is as well.

Oct 20, 2009 | 2002 Jeep Grand Cherokee

1 Answer

1999 jeep grand cherokee losing oil pressure


This is not necessarily an issue, but normal physics. I suggest remove your transducer and test with an external, known good, gauge.... Be sure the vehicle is at normal operating temprature....that will give the lowest pressure reading, as compared to cold engine.

Oct 10, 2009 | 1999 Jeep Grand Cherokee

3 Answers

Low oil pressure on 99 jeep grand cherokee


change your oil,it could be too thin,see if that fixes it

Jan 17, 2009 | 2000 Jeep Grand Cherokee

1 Answer

Oil Pressure Always Runs High - 2002 Grand Jeep Cherokee


Might be that the oil pressure switch is going out. Unless this has been happening for a while now.

Jan 06, 2009 | 2001 Jeep Grand Cherokee

1 Answer

RPM opposite effect on oil guage


how many miles are on the vehicle this usually happens when the oi; pump or engine is wore out.

Dec 13, 2008 | 2002 Jeep Grand Cherokee

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