Question about 1989 Ford Bronco II

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Oil pressurer loss ford bronco2

I have a 90 bronco 2 , 2.9 v-6, oil pressure is dropping, as the engine gets warmer, it loses more pressure unless you keep the rpm's up. It is an automatic v-6, there is a light lifter tap on the driver side , yet no lower knock. Do I need an oil pump, or is it a clogged oil gallory, or ? thanks

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  • adams_em May 11, 2009

    well, the oil pressure will drop to the red after hot if you do not keep rpm's up. weak pump or is the oil drain gallories clogged?

  • adams_em May 11, 2009

    the oil dipstick is showing a lil milky to , usual sign of a head gasket problem right?

  • yadayada
    yadayada May 11, 2010

    Once again u verified this with a mechanical test gauge?

  • yadayada
    yadayada May 11, 2010

    is the pressure really dropping? have u had a mechanical test gauge hooked up? the sending units in these are notorious from these incorrect readings.

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Its normal for oil presure to drop as the engine comes to its running temperature.
Upon starting the car's engine the first time means after it has stayed overnight, do you get any knocking sound or any other sound?Sometimes some kind of metallic sound comes from the oil pump during a start up,this is because the oil pump could be weak and or it loses all the oil around it during the night stay, and remember the viscocity of the oil drops and become thinner and thus its quicker for the oil to drop back to the sump, (upon driving back home and parking it)
Remedy:- Use a higher grade of engine oil and note if theres any difference.
(2) Try to use STP start-up oil addtive.
(3) Not bad if you could flush out the engine with STP engine flush.
Replace the oil filter and a higher grade of Engine oil together with STP Engine Oil treatment.

Hope this helps!

Posted on May 11, 2009

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It's normal for the oil pressure to fall off at idle as it gets warmer because the oil gets thinner. It should operate between about 20 and 60 lbs. If it drops below 10 lbs at hot idle, you may have some bearing wear or a worn pump.

Posted on May 11, 2009

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