Arizona Posted on Aug 25, 2015

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How do you change the oil pump on a 1996 jeep grand cherokee limited 5.2 liter.The oil pressure drops almost down to zero when in idle normal operating temp range range. Need steps.

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Frankie B

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Posted on Aug 29, 2015

Frankie B

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The problem is more than likely not the oil pump. If the oil pump is bad, your engine would probably be making a knocking sound as if it's going to break apart. 1st change your oil and filter. If that doesn't solve the issue, replace the oil pressure switch, it could be clogged. If your problem still exists, remove the oil pan and see if the oil pump screen is clogged.

_--_-_

Jeep Master 20,706 Answers
Posted on Aug 25, 2015

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Why not answer some simple questions:

what oil, type, 0w?
how old is that OIL is it, 3 years, 25,000 miles> what?
do you change oil often -3-7k (3k is best on high mileage engines)
what mileage on the engine, 100k, 300k ,500k? what?
drops to zero using a real shop test gauge? do say what?
with one valve cover off is engine full of sludge?
the pump screen will be packed with #6 true. starving pump.
bearing clearances, all wrong will not be cured with any new pump.
what is cold cranking pressure using a REAL hand shop gauge. nice and high?

Anonymous Aug 29, 2015

zero response to that means you wanted wild useless guessing
so here goes.. (can do lots more... all wild)
the gauge sensor is bad.... see?
Anonymous Aug 29, 2015

accurate but wild. accurate but wild.

Ted Maxwell

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Posted on Aug 25, 2015

Ted Maxwell

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I'd be checking to make sure that the oil pump was not the problem before I tried to replace it.
How many KM/miles on the engine?
Regular maintenance?
Burning oil?

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