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Cadillac Catera and Cimarron Forum Discussion, 98 Catera, oil pressure issue. in Past Cadillac Vehicle Discussion; Here is a better picture of the second oil pressure switch. See attachment....
  1. #16
    retho78 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    Here is a better picture of the second oil pressure switch. See attachment.
    Attached Images

  2. #17
    elvin315's Avatar
    elvin315 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    Quote Originally Posted by retho78 View Post
    I have 10W-30 oil right now with 92000K miles. In additon, the weather in Oklahoma is about 96F-97F for the past week or so.
    Before messing with the pressure sensor try a heavier weight oil. 10w30 might be too thin. Bump up to a 20w50 that won't thin out at hot temps.

  3. #18
    USEDCAT is offline Cadillac Owners Fanatic
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    Re: 98 Catera, oil pressure issue.

    Quote Originally Posted by retho78 View Post
    Here is a better picture of the second oil pressure switch. See attachment.
    retho78 are you already into the oil pump area in your engine given the picture?

    If you have this OPS in your car I would replace it as it only costs under 10$. I believe this may be the one that sets the light as I don't see in any of your pictures the needle in the area where light should be set.

    These switches are a piece of cake to replace except one may be a little costly.

    Your choice also for what elvin is suggesting.

    Cheers.

  4. #19
    retho78 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    I have seen the oil pressure sender in my car which is right below the pulleys. but the oil pressure switch have not seen it yet. I know it is by the oil pump, will look at it today and see if I can find it. The oil pressure switch is less than $10 and the oil pressure sender is like $45-$60.

  5. #20
    Matera97's Avatar
    Matera97 is offline Cadillac Owners Fanatic
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    Re: 98 Catera, oil pressure issue.

    Retho, part 19 in the diagram is a level sensor, I would think this is for the amount of oil. Which would trigger the other oil warning light. The parts I think that would be culprit would be Part 060: SENSOR,ENG OIL PRESS GA(1 PIN,1 BLADE CONN)(6.670)(LOCATED UNDER OIL PUMP) Part # 903367695 or Part 059: SWITCH,ENG OIL PRESS IND(ACDelco #D1831A) Part # 55354378.

  6. #21
    USEDCAT is offline Cadillac Owners Fanatic
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    Re: 98 Catera, oil pressure issue.

    Quote Originally Posted by Matera97 View Post
    Retho, part 19 in the diagram is a level sensor, I would think this is for the amount of oil. Which would trigger the other oil warning light. The parts I think that would be culprit would be Part 060: SENSOR,ENG OIL PRESS GA(1 PIN,1 BLADE CONN)(6.670)(LOCATED UNDER OIL PUMP) Part # 903367695 or Part 059: SWITCH,ENG OIL PRESS IND(ACDelco #D1831A) Part # 55354378.
    Matera97 that is right on.

    The Oil Level Indicator (Part 19) is actually inside the lower oil pan and not accessible without dropping the oil pan. It is lot more expensive and is not related to oil pressure unless you are low on oil.

    As far as I can tell 59 will set the light and 60 will move the needle.

    Cheers.

  7. #22
    retho78 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    I think several other GM vehicles use the same oil pressure sender. GM part #88924501.

  8. #23
    retho78 is offline Cadillac Owners Connoisseur
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    98 Catera, oil pressure issue.

    Okay guys, I did a clean up on the oil pressure sender and did run about 35 mins and didn't notice any issues. Also, the outside temp was 85 deg so will have to test it once the temp gets back up to 97.

    Here is the picture of the gauge at idle speed. I hope this is normal.
    Attached Images

  9. #24
    USEDCAT is offline Cadillac Owners Fanatic
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    Re: 98 Catera, oil pressure issue.

    Retho78 that is what mine is at when fully hot. If it is rock steady at that for various situations you should be good. Did you also see more responsiveness and a bit higher pressure when cold? May be wortwhile just look at nuances of before and after to judge if it is making a difference.

    Cheers and good luck.

  10. #25
    retho78 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    I drove it around and it did not see much of a difference so I let it run on idle to see if the pressure dropped, but nothing happend it just sat at the same position (as pictured). I hope it will be fine when the temp gets up to 90s.

  11. #26
    retho78 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    Update! So far so good, the oil pressure has been steady after the clean up. Also, I forgot to mention when I did the clean up, there was some oil residue on one of the wires (the one that plugs into the oil pressure sender). I'm guessing this oil residue in the wire connector could have caused the oil gauge not to read accurately.

    Any changes, will let you all know.

    Thanks.

  12. #27
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    Re: 98 Catera, oil pressure issue.

    Thanks for the update.

  13. #28
    retho78 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    You're welcome!

  14. #29
    pedrazamarcos is offline Cadillac Owners Member
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    Re: 98 Catera, oil pressure issue.

    Can You please post more pictures with the NEW Oil pressure switch to see if you have the same readings?Acording to your gauge you have around 22-21 psi and the minimun specs are 21.7. Is time for Thicker or Synthetic oil.

  15. #30
    retho78 is offline Cadillac Owners Connoisseur
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    Re: 98 Catera, oil pressure issue.

    I did not replace my oil pressure sender, but just did a cleaning and so far it is working good. The picture of the oil gauge reading is the one after I did the clean up and this is at normal idle.
    Attached Images

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