Low oil Pressure - JeepForum.com
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post #1 of 6 Old 12-27-2004, 12:40 PM Thread Starter
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Low oil Pressure

This is my first time on the forum so I'll try not to bore anyone. I just bught a 99 Grand Cherokee V8, I have started getting a check gauges lite. It on beacuse at an idle the oil pressure is real low. Any simple fix ideas aside from the oil pump??

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post #2 of 6 Old 12-27-2004, 03:09 PM
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Just out of idle curiosity, how many posts does one have to have before he is allowed to bore people?

Your problem is most likely not the oil pump. The first thing to check is, of course, your oil level. If it is full, then the most likely culprit is the oil pressure sending unit. Which should be located on the forward end of the engine block just above the oil filter on your Jeep.


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post #3 of 6 Old 12-27-2004, 06:12 PM
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yeah i had the same problem last week. I checked the sending unit and there was oil everywhere and it was spinning around so i replaced it and it works great.

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post #4 of 6 Old 12-27-2004, 06:29 PM
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Just replaced mine too, its most likely your problem also
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post #5 of 6 Old 12-28-2004, 12:57 PM
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Optimally, how high should the oil pressure be?

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post #6 of 6 Old 12-28-2004, 01:46 PM
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I found that when the oil gets up to temp, which is a bit longer than when your engine gauge gets to temp, the oil pressure should be somewhere around 40/50. On the highway 60-65 for me is not uncommon.

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