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Old 10-09-2008
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my oil pressure gauge went crazy

I was on my way to Austin today, when my oil pressure gauge went crazy. it was jumping like mad. I stopped, checked my oil (which was changed on monday). All ok. Started it up..same thing. Finally, after driving for over an hour, it's sitting at the bottom, barely moves when i give the truck any gas. Truck is driving and sounds fine. Nothing out of the ordinary. Could it be the sending unit? If so, where is it located, and how hard is it to replace? Thanks.
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Old 10-09-2008
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Probably a bad sender.
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Old 10-09-2008
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I think it's prone to happening. My truck is the same way. Oil pressure seems to be fine. I haven't gotten around to changing the sending unit yet though.
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Old 10-10-2008
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Wheres it located? Know how hard it is to change out?
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Old 10-10-2008
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I'm pretty sure it's as simple as screwing the old one out and the new one in.

From what I'm remembering its on the passenger side of the block toward the cab. Should be a gray plastic piece I think? I'll have to look and take pictures when it's light out again.
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Old 10-10-2008
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Thanks alot, ide really appreciate it.
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Old 10-10-2008
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On your 3.0L, the sending switch is in the block behind the PS cylinder head - hard to see from above. Go in through the wheel well and push the splash shield out of the way for a better view. The wire to it is dark green/white.

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Old 10-10-2008
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mine has been bad for a long time now, it stays at no pressure for about 2 miles then it pops up to normal pressure reading.
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Old 10-11-2008
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if the guage is acting screwy but there doesnt seem to be anything wrong with the engine its the sending unit
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Old 10-12-2008
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Thanks for all the advice fellas. Greatly appreciated. I'll get it changed this week, and let you know if thats what it was.
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