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Old 03-10-2009
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Oil Pressure Sending Unit Location

I'm putting in an aftermarket oil pres gauge and needed to know where the sending unit was located on the engine. Also what would be the range for normal operating pressure?

Last edited by 99_NWRanger; 03-10-2009 at 06:19 PM. Reason: typo
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Old 03-10-2009
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4.0L is on the driver side of the block near the front below the AC compressor. Look for a green/white wire going to the factory OP sending switch.

Roughly 15~60 PSI operating pressure range. I would look for a 0~80 or 0~100 PSI gauge.
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Old 03-10-2009
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I could've tapped into the wrong port. I found an sending unit drivers side front and it had one green wire. When I disconnected the wire the oil pressure on the stock gauge would drop all the way. When I plugged it back in normal again. I figured this was it!

I install my gauge and it spikes to about 40-50 range then after about 10 min of running the engine it dropped back down to 20-25 range.

Now my problem is when I shut the engine off the gauge stays in the same exact place and during my 10 mile drive home I didn't really see any movement. What did I do wrong?
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Old 03-11-2009
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Alright well forget my last reply. I had it installed correctly figured out today after work that the line was kinked and was blocking the pressure from reading. Soon after tried to unkink it and the line split so I had to buy another one. Gauge works perfectly now
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Old 03-13-2009
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i'm assuming there is no way to hook this up and still retain the factory oil pressure gauge? I already have a dead gauge due to the water temp so not really looking for another dead gauge but would like the reading from the aftermarket.
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Old 03-13-2009
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I got the stock dummy oil gauge dead right now. I hate seeing the check gauge light constantly now but I can manage.
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Old 03-13-2009
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Quote:
Originally Posted by fishy2k8 View Post
i'm assuming there is no way to hook this up and still retain the factory oil pressure gauge? I already have a dead gauge due to the water temp so not really looking for another dead gauge but would like the reading from the aftermarket.
Some have teed the stock and aftermarket sending units to keep both gauges functional and the light off.
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Old 03-20-2009
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has anyone hooked one up without draining the oil? i just changed my oil a 1000 miles ago and just got this gauge and want to hook it up with minimal mess and oil coming out. so wait until i change the oil next or is there not a bunch of oil that will come out?
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Old 03-20-2009
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You shouldn't lose more than a minor drool of oil.
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Old 03-20-2009
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ahh sweet, i wasn't sure if it'd come spilling out or not. does anyone know the shaft size of the stock sender so that i know what size T to get?

Last edited by fishy2k8; 03-20-2009 at 03:15 PM.
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Old 03-20-2009
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11/16?

I'm trying to remember off of the top of my head so don't take my word for it.
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Old 03-20-2009
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got it installed, my hands are black still and beat up but i got it! haha, the stock sender is 1/4 thread fyi
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Old 03-20-2009
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So where you guys mounting your gauges? I was thinking of getting a dual pod for the a-pillar.
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Old 03-20-2009
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i have a dual a-pillar pod for my water temp and oil pres then ive got a column on for my air/fuel gauge.
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Old 03-22-2009
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I got mine sitting in front of the passenger airbag light temporarily. I need to get a pod for it.
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