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OIL pressure gauge

USMC_TOP

Well-Known Member
Messages
491
Location
Muir Michigan
I was under the impression that the guys here monitor that with their Scan gauge II from obd port. I'm wrong most of the time so take that with a grain of salt........lol

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4speedfunk

Well-Known Member
Messages
4,250
Location
Tardville
I cannot speak specifically for the H3 but, on other cars I usually install a tee fitting at the sending unit. This allows you to retain the idiot light while also adding a mechanical gauge. I question the accuracy of any electrical reading (including a scan tool). Mechanical gauges are where it's at if you really want to know what's going on inside the motor.
 

f5moab

Mr. Beretta
Messages
2,000
Location
In hiding.....
Oil pressure sensor is electronic and supplies a signal to the PCM which in turn, relays it to the BCM via the class 2 line and feeds the signal to the IP cluster. I guess you could remove the electric sensor and install a pressure sensor for a gauge. However, this will turn on the service engine soon light since the PCM no longer sees any oil pressure and might put the vehicle in a reduced power mode, or maybe even a no run mode.
I would go with USMC_TOP and get a scan gauge.
And most of the sensors used on modern vehicles are pretty darn accurate. Problem with most is that the actual gauges in the clusters are not that accurate. So a reading from a Scan gauge should be accurate. Great example is the coolant temp gauges can be a little off at times.
 
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