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Thread: oil pressure

  1. #41
    Hybrid booster
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    Re: oil pressure

    I have never heard of this before, would this cause my problem? I still don't know what to do about the balanced shafts!

  2. #42
    turbo addict
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    Re: oil pressure

    Quote Originally Posted by turbo-tease View Post
    I have never heard of this before, would this cause my problem? I still don't know what to do about the balanced shafts!

    http://www.thedodgegarage.com/turbo_oil_pump.html

    In RED LETTERS.

  3. #43
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    Re: oil pressure

    I have not removed them,just wondering if I should or not

  4. #44
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    Re: oil pressure

    I have never put sealant on any of my pumps & have never had a problem

  5. #45
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    Re: oil pressure

    Quote Originally Posted by turbo-tease View Post
    I have low oil pressure & makes a noise on initial start up , engine is a 2.5 turbo engine is fresh only 1,000 miles on it. any ideas what might be wrong? any help would be great! thx
    When you bolt the oil pump to the block you have to use flange sealant. Loctite makes it.
    Quote Originally Posted by turbo-tease View Post
    I have never heard of this before, would this cause my problem? I still don't know what to do about the balanced shafts!
    Quote Originally Posted by turbo-tease View Post
    I have never put sealant on any of my pumps & have never had a problem
    Do yea think it could be related? There IS supposed to be sealant between the block and pump. Look at a FSM if you don't believe us. Just because you haven't ever done that and not had issues (that your aware of) doesn't make it optional.
    Were just trying to help you turbo-tease. After all, you asked for help.
    Todd

  6. #46
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    Re: oil pressure

    don't think its related, didn't say I didn't believe anyone that's why I ask for other peoples opinions. wish i had people near me so they could see what I am talking about this problem is just driving me nuts

  7. #47
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    Re: oil pressure

    I'm having some issues trying to get my attachment to show or my edits to work without deleting everything. Anyway, here's a picture of my factory gauges indicating zero oil pressure compared to a mechanical gauge. I was attempting to reply to turbovanman's question about how you are verifying oil pressure? This is at a hot idle on my car, it periodically will do this which prior to installing the mechanical gauge was pretty nerve wracking!

    1991 Chrysler Lebaron GTC convertible - a568 - 15psi FWD Stage 3, FMIC, TII Garrett turbo, two of the big ones

  8. #48
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    Re: oil pressure

    Quote Originally Posted by dwh4784 View Post
    Anyway, here's a picture of my factory gauges indicating zero oil pressure compared to a mechanical gauge.
    Oil pressure sensor is probably bad.

  9. #49
    Supporting Member Turbo Mopar Contributor supercrackerbox's Avatar
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    Re: oil pressure

    Yes. I've been through four senders on my '91.

  10. #50
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    Re: oil pressure

    It reads normal most of the time, when it started to tank like that I thought the motor was toast (I had just replaced the head). I'll try a new sensor next oil change, but I like the mechanical gauge for reassurance anyway.
    1991 Chrysler Lebaron GTC convertible - a568 - 15psi FWD Stage 3, FMIC, TII Garrett turbo, two of the big ones

  11. #51
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    Re: oil pressure

    Quote Originally Posted by dwh4784 View Post
    It reads normal most of the time, when it started to tank like that I thought the motor was toast (I had just replaced the head). I'll try a new sensor next oil change, but I like the mechanical gauge for reassurance anyway.
    does yours start to make noise when getting to the hot when oil pressure drops?

  12. #52
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    Re: oil pressure

    No, mine is an instrument failure only. That's why I was curious if you have tried a real oil pressure gauge? They are inexpensive and can be removed if you don't want to install it permanently.
    1991 Chrysler Lebaron GTC convertible - a568 - 15psi FWD Stage 3, FMIC, TII Garrett turbo, two of the big ones

  13. #53
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    Re: oil pressure

    Quote Originally Posted by dwh4784 View Post
    No, mine is an instrument failure only. That's why I was curious if you have tried a real oil pressure gauge? They are inexpensive and can be removed if you don't want to install it permanently.
    no, I haven't been able to check with a mechanical gauge noise was concerning me the most

  14. #54
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    Re: oil pressure

    how could I have good oil pressure on start up but crap oil pressure at operating temperature? that's what doesn't make sense

  15. #55
    Supporting Member Turbo Mopar Contributor supercrackerbox's Avatar
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    Re: oil pressure

    As oil heats up it thins out and becomes easier to pump. Metal parts expand and increase tolerances. These combine to reduce the resistance against the oil flowing through the galleys, resulting in a lower pressure reading. Oil pressure always drops when the engine heats up. Only question is does it drop too far . . . ?

  16. #56
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    Re: oil pressure

    it drops too far because it will make noise that is very noticeable

  17. #57
    Supporting Member Turbo Mopar Contributor supercrackerbox's Avatar
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    Re: oil pressure

    Take the pump out and measure the clearance limits in your FSM. Or just replace it. Either way, use the anaerobic sealer on the mounting flange. While you're at it, inspect your rod and main bearings, but chances are if you're getting a lot of racket, it's probably too late.

  18. #58
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    Re: oil pressure

    will over pressure trigger the CEL too? Cold running to work today (58*F) and my gauge was showing H right on the border of past high and I was noticing my CEL coming on, wasn't the knock sensor.... I don't think, I was in 4th with light throttle, no boost.

    Sorry to thread-jack but as you guys were talking oil pressure...../

  19. #59
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    Re: oil pressure

    Very odd to see overpressure with the relief mechanism on these pumps. I would suspect the sender with that issue.

  20. #60
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    Re: oil pressure

    Quote Originally Posted by supercrackerbox View Post
    Take the pump out and measure the clearance limits in your FSM. Or just replace it. Either way, use the anaerobic sealer on the mounting flange. While you're at it, inspect your rod and main bearings, but chances are if you're getting a lot of racket, it's probably too late.
    already replaced pump ,has new rod bearings & checked main bearings n looked good

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