Oil pump problem

[fubarman]

I am helping a friend he has a 94 explorer that has been sitting for a couple years. Tha cat was plugged so I replaced it with one that has been cleaned out. Took the explorer for a drive runs great now but oil pressure gage started dropping to nothing. Lifters had already been ticking. I change sending unit started engine good oil pressure then dropped to nothing. I put on mechanical gage started engine gage had 40 pounds then dropped to zero lifters making more noise.Drained oil put a mixture of diesel fuel and auto tranny fluid started engine and let idle no oil pressure. drain mixt and put in new 10-40 oil and filter changed filter started engine no oil pressure. I am certain it needs new oil pump.Does anyone know if I can drop pan with engine in car or do I have to pull the engine to drop the pan.

Thanks for the help

 

[Roadrunner777]

You need to pull the engine. Once, I heard of someone dropping the pan by lifting the engine a little bit, but it sounded like more work that it was worth.

 

[smegun]

94 .....cant change the oil pump without pulling engine ?

any tutorial links for changing the oil pump and timing chain on 94 would be apreciated

 

[jd4242]

Could be just a clogged screen, that happened to mine.I too have heard of people jacking the motor up and pulling it but dont know how, maybee with a body lift..if you replace it use a m328 HV pump