oil pressure gauge - JeepForum.com
 
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post #1 of 7 Old 09-12-2017, 03:18 PM Thread Starter
Pugulis
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2001 WJ 
 
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oil pressure gauge

My oil pressure gauge just dropped to zero, setting off the "check gauges" light and alarm. I then started working, then went off again. My engine seems to be running fine. Is this a common sensor problem with the 4.0 in a 2001, or should I be worried?


[_][]☺[][][]☺[][_] RIP to my 96' Grand Cherokee Laredo 344,700 miles and welcome to my new 2001 WJ
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post #2 of 7 Old 09-12-2017, 03:59 PM
WiLieR
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It's going to die! Zero pressure means no oil moving and nothing good happens when no oil moves!

Just kidding. First thing to do is check the oil pressure sending unit. Chances are it has gone bad. It is an inexpensive part, so swapping it out would be the first thing I would do. It is a 15 minute job at the most. Easy to reach on the passenger side of the block near the oil filter.


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post #3 of 7 Old 09-12-2017, 04:29 PM Thread Starter
Pugulis
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That's what I figured. Thanks!

[_][]☺[][][]☺[][_] RIP to my 96' Grand Cherokee Laredo 344,700 miles and welcome to my new 2001 WJ
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post #4 of 7 Old 09-13-2017, 07:59 AM
gamekiller7
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Is it cheap? I swear I looked up on advanced Auto and the wanted $112

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post #5 of 7 Old 09-13-2017, 09:49 AM
Double E
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That's high. Should be about $40 IIRC.

'04 Freedom Edition HO & '04 Overland HO (previous '00 Laredo 4.7)
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post #6 of 7 Old 09-13-2017, 02:38 PM
02WJJim
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Oil Pressure Sensor

Make sure you buy an OEM MOPAR sensor (about $50) or you will be replacing it again very shortly. Ask me how I know! I believe it is a deep 21mm socket to replace this.
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post #7 of 7 Old 09-13-2017, 03:43 PM
Sociopath
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Garage
I'll back up the buy a Mopar unit suggestion. Aftermarket sensors never seem to last, at least not on WJ's. I think they're coded to reject all aftermarket sensors lol.

I'm pretty sure a Mopar one is around $35 on Amazon.
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