Question about Ford F-150
2001 f-150, 5.4, oil pressure censor indicates 0 when started some times, goes away and indicates normally after the engine warms up, using external gage it reads good pressure at start up.173,000 miles, started at 94,000 miles.
Remove the oil pressure sending unit and have a test gauge hooked up and see if the sending unit is defective. If you really have low pressure the engine should be making lots of noises.
Posted on Oct 26, 2012
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Posted on Jan 02, 2017
1992 silverado pickup has a problem with the oil pressure Gage on the dash board fluctuate when i put break on or accelerate the gas
Posted on Feb 14, 2009
In some cases where the oil is not changed properly, the oil pump screen maybe plugging or your oil filter is defective. Fram is a good filter. If there is no problem found, replace the pressure sensor.
Posted on Jul 27, 2009
There may be a loose wire or the gauge or sending unit may be going bad. The first thing I would do is to hook up a temporary oil pressure gauge, not using the old one at all. With this watch gauge while driving and see what readings you get. If the readings still jump around you have a pump that is getting weak and failing, If that is the case the pump should be replaced, but with high milage you may consider rebuilding the entire engine. If the readings stay normal start checking for a loose wire at gauge or sender. Then check sender, then gauge and replace as needed.
Posted on Oct 02, 2009
Two things...when it reads zero, is there any engine noise (tapping or knocking)? After you rev the engine does the pressure read normal at idle and function normally, or does it go back down? Either way, you should not drive the vehicle 'till you have a mechanical gauge (yours is electro-mechanical) put on there and the actual pressure is tested. The condition may be a bad sending unit, a bad bearing or possible obstructed oil pump screen. The repair is obviously different for each one and the price is as well.
Posted on Oct 20, 2009
i would find and replace the oil pressure sending unit although oil pressure is ok the computer needs to know or else it will shut down engine and it seems like your oil pres. sending unit is starting to stick.
Posted on Feb 01, 2010
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