another oil pump replacement question
Thread Starter
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Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
another oil pump replacement question
low oil pressure on 1994 4.9 auto 124k truck.
i read all the other posts.
question is some members say besides jacking up engine you need to move back trans. does that mean unbolt trans mount?
second question should i get high volume pump or is melling regular pump ok?
thanks, great forum
i read all the other posts.
question is some members say besides jacking up engine you need to move back trans. does that mean unbolt trans mount?
second question should i get high volume pump or is melling regular pump ok?
thanks, great forum
Tuned
Joined: Feb 2003
Posts: 424
Likes: 4
1) You don't have to remove the transmission, but disconnect the trans. support, so it can raise slightly as you lift the engine.
2) Since you're replacing the pump, I would put in a high volume while I was doing the job.
2) Since you're replacing the pump, I would put in a high volume while I was doing the job.
Senior User
Joined: Nov 2003
Posts: 179
Likes: 0
From: Central Virginia
Sorry to say this, but in my limited experience the oil pump is usually not the cause of low oil pressure. The problem is usually excessive clearance in the bearings. I hope you luck out and the problem is the pump itself. Be sure to install a new pickup screen while you are at it. Low pressure can be caused by a clogged screen.
Good Luck
Good Luck
Thread Starter
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Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
other posts indicate when gauge is erratic and oil is not circulating properly and this engine has around 100k to 150k then it is the crap on the screen and in oil pan generally. so i am replacing pump, shaft to dist and screen and cleaning everything else out.
picked up this truck for a very good price because of the erratic oil pressure.
it may be something else. oil pressure is ok for first 5 minutes or so, then lifters start ticking.
picked up this truck for a very good price because of the erratic oil pressure.
it may be something else. oil pressure is ok for first 5 minutes or so, then lifters start ticking.
Thread Starter
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Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
i am aware that oil gauge in some fords are idiot lights.
i got the oil pan out, no small feat in itself, and the oil strainer looked pretty nasty.
i could see some places where oil would go through, but i could take a screwdriver into the part with the cover over the screen and got solid sludge.
i am going to buy a new oil pump and strainer and oil pan gasket.
should i buy any of this from ford? maybe the gasket?
i am trying to decide if i need a high volume oil pump. will it really be neccessary?
it is twice the cost.
i am going to try to clean out anything that i can while pan is off like the passageways to the top of the engine.
thanks for the help!
i got the oil pan out, no small feat in itself, and the oil strainer looked pretty nasty.
i could see some places where oil would go through, but i could take a screwdriver into the part with the cover over the screen and got solid sludge.
i am going to buy a new oil pump and strainer and oil pan gasket.
should i buy any of this from ford? maybe the gasket?
i am trying to decide if i need a high volume oil pump. will it really be neccessary?
it is twice the cost.
i am going to try to clean out anything that i can while pan is off like the passageways to the top of the engine.
thanks for the help!
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