New oil pressure sensor isnt working right
Thread Starter
Newbie
Joined: Jul 2022
Posts: 26
Likes: 3
From: Southern California
Year: 1995
Model: Cherokee (XJ)
Engine: 4.0 High Output
Hey guys, I just got a new oil pressure sensor. Before mine went out, it would read maybe 15 at idle, and go up to probably 30 when I step on it. I broke it and it was pegged way past 80. The new one sat at 60 on the cold start and after a few revs, it goes from 60-80.
Any ideas why it's reading wrong? Break in period maybe? Faulty sensor? I have no clue any info would be great thanks.
This is the sensor I got. Duralast Oil Pressure Switch PS233 https://www.autozone.com/external-en...233/103750_0_0
Any ideas why it's reading wrong? Break in period maybe? Faulty sensor? I have no clue any info would be great thanks.
This is the sensor I got. Duralast Oil Pressure Switch PS233 https://www.autozone.com/external-en...233/103750_0_0
CF Veteran
Joined: Jun 2017
Posts: 2,215
Likes: 635
From: Hangover, PA
Year: 1998
Model: Cherokee(XJ)
Engine: 4.0L
It is an off brand sensor. They are known for being faulty right out of the box.
I suggest you confirm your oil pressure with a mechanical gauge then buy a Mopar sensor. They are the only ones I trust
I suggest you confirm your oil pressure with a mechanical gauge then buy a Mopar sensor. They are the only ones I trust
Member



Joined: Oct 2023
Posts: 206
Likes: 101
From: Tip of the mitt, Michigan
Year: 1996
Model: Cherokee (XJ)
Engine: 4.0
Once I thought my oil sender was bad, but it was the connector that had loosened up. I messed with the terminals to get a tighter connection and it’s been fine for years.
Thread Starter
Newbie
Joined: Jul 2022
Posts: 26
Likes: 3
From: Southern California
Year: 1995
Model: Cherokee (XJ)
Engine: 4.0 High Output
I am not too worried about it. It still reads, so I'll know if I lose pressure. Don't really want to pay for another right now. Thanks though, I'll get the Mopar one next time.
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