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Old 03-13-2007, 07:17 PM
mharmsen mharmsen is offline
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need help f150

i have a 97 f150 4.2l 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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Old 03-16-2007, 08:20 AM
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Bob Wheeldon
My 01 F150, 4.2 has done the same thing for several years. Still don't know what the deal is. Seams to do it more when I'm near due for an oil change.
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