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Go Back   Dodge Cummins Diesel Forum > 2nd Gen. Dodge Cummins 94-98 12V Forums > 94-98 Powertrain
94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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Old 11-27-2012, 03:01 PM   #1 (permalink)
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power steering problems

i have the 97 5.9 cummins and when i cut the engine off it pushes motor oil back through the power steering pump what can i do to fix this
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Old 11-27-2012, 05:02 PM   #2 (permalink)
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i have the 97 5.9 cummins and when i cut the engine off it pushes motor oil back through the power steering pump what can i do to fix this
how did you diagnose that there is motor oil in your p/s fluid?
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Old 11-27-2012, 06:22 PM   #3 (permalink)
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cause the oil was low but the ps was full
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Old 11-27-2012, 06:24 PM   #4 (permalink)
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u can also here pressue pushing the oil out of the power steering could the pump be going out its self
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Old 11-27-2012, 06:35 PM   #5 (permalink)
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and when u try to turn the steering it whines and when u hit the brakes it whines im just saying this is what it is doing i dont really know what it could be it does have a vaccum pump and has hydro boost brakes
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Old 11-28-2012, 08:25 AM   #6 (permalink)
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cause the oil was low but the ps was full
So, do you physically see engine oil in your power steering reservoir? How low was your engine oil? P/S reservoir holds little fluid. If you lost engine oil enough to notice it and it migrated through the vacuum pump to your p/s pump, it would be flowing out of your p/s pump.
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Old 11-28-2012, 10:27 AM   #7 (permalink)
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Having just replaced my PS pump, I sympathize with you. There's a seal on the pump, that if loose, could theoretically let engine oil into the pump. My pump would completely drain out in 3 days just sitting, even with all hoses replaced.

There are two rubber seals (o rings) internally behind two of the hose fittings that you can't see, and in my case the PS fluid would drain out.

I doubt that its engine oil displacing PS fluid, but it does sound like pump is out.

The chain remans ( NAPA, O'reilly, et. al.) are junk. I went through 2 NAPAS, until I found a local shop that specializes in Power steering pump rebuilds ($68). Maybe they ship (Raven Power Steering Specialists, Denver, CO, 303-777-6640).

The stealer wanted $720 for a factory new one, and the mopar4less wanted $450. Rockauto is cheap remans too, so if you've got a local shop like Raven, I recommend the 2 man shops that still care about their work.
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Old 11-28-2012, 10:46 AM   #8 (permalink)
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This is for a 24v but is similar to a 12v
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Old 11-28-2012, 12:31 PM   #9 (permalink)
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bandsdean it is coming out through the ps and the oil was about 1.0 gallon low
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Old 11-28-2012, 12:40 PM   #10 (permalink)
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Now I'm leaking oil too, and it's coming out where the PS pump goes into the vacuum pump. I should have replaced that seal!
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Old 11-28-2012, 01:45 PM   #11 (permalink)
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I also wish I would have seen that youtube video several posts above!
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Old 11-28-2012, 04:02 PM   #12 (permalink)
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yea theres a seal there but mies coming from the ps cap
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