need help f150

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Mar 13, 2007 | 07:16 PM

mharmsen

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need help f150

<TABLE><TBODY><TR><TD vAlign=top width="100%">i have a 97 f150 with a 120,000 miles on it. when the truck warms up and sitting at a stop with the brake on i start to loose oil pressure, but when i touch the gas or shift into park it goes right back up, and is soild as a rock. i changed the oil pump and relieve valve.
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Mar 13, 2007 | 08:32 PM

Ultramagdan

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From: Kansas

Have you checked the sending unit to make sure it's reading right? Everything else is ok? I would focus on the sending unit and the gauge itself.

Mar 13, 2007 | 09:18 PM

screwy

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Joined: Aug 2002

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From: Over Yonder, MN

Well unless you modified something the oil pressure gauge is just an idiot light. Something like 7 psi it reads dead center, below nothing. I’d check the wiring on the sender.

Mar 14, 2007 | 02:29 AM

LxMan1

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From: Louisville,Ky.

I'd check the actual pressure with a real gauge to see what is going on.