'92 STS- What else should I do while I have the "cradle" out of the car?
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Cadillac Seville / Cadillac Eldorado Forum Discussion, '92 STS- What else should I do while I have the "cradle" out of the car? in Past Cadillac Vehicle Discussion; Well, I've just removed the drivetrain cradle from my '92 STS... it was my 1st time...she was very gentle with ...
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    JustDoug is offline Cadillac Owners Member
    Automobile(s): 1992 STS
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    '92 STS- What else should I do while I have the "cradle" out of the car?

    Well, I've just removed the drivetrain cradle from my '92 STS... it was my 1st time...she was very gentle with me.

    My trans main seal was toasted- that's the reason I had to go in. Anyhow, with over 190k on what I believe to be the original engine, what else should I do while I have the car apart. Most of my searching of this site seems to point to issues with the Northstar engines... what advice do you folks have for my 4.9?

    BTW, the car was running beautifully prior to the trans leak. I'm the 3rd owner- bought it from a good friend. He was responsible for mileage from 95k to 175k- all highway as he was servicing clients in 3 states, and good about routine maintenance.

    So, any advice on common rebuild needs on these engines? I figure I might as well take advantage while the engine is accessible. Actually, I'd feel a whole lot better about going to all of this trouble if I were to put more into her than just a friggin' trans seal!

    Any input is appreciated! And thank you all! I'm really enjoying this Forum.

    Doug

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    JustDoug is offline Cadillac Owners Member
    Automobile(s): 1992 STS
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    Thread Starter

    Re: '92 STS- What else should I do while I have the "cradle" out of the car?

    Any Suggestions?

    Should I replace head gaskets, or something while it's on the ground??

    Anybody???

  4. #3
    Zorb750 is offline Cadillac Owners Connoisseur
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    Re: '92 STS- What else should I do while I have the "cradle" out of the car?

    You might want to check the walve cover seals. Look over all the wiring. I don't know where the 4.9's oxygen sensor is, but this might be a very easy time to replace it/them. Spark plugs too?

  5. #4
    EcSTSatic's Avatar
    EcSTSatic is offline Cadillac Owners Connoisseur
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    Re: '92 STS- What else should I do while I have the "cradle" out of the car?

    After the work it took to drop it, you feel like you should do something. Maybe this is one of those times when the saying "if it ain't broke, don't fix it" applies. You might look it over for annoying oil leaks. At least clean it up real good. It will make it prettier and more pleasant to work on when something does break. Wash the engine compartment too.
    How are the motor mounts? Freeze (casting) plugs? What else is hard to get at when it's in?

  6. #5
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: '92 STS- What else should I do while I have the "cradle" out of the car?

    I tend towards the "ain't broke" side. I'd follow the suggestions to clean it up, check for leaks, plugs while they are verrrrrrrrryyyy easy. Otherwise I'd leave it alone and cross my fingers.

    The oxygen sensors are supposed to be changed at some interval. If they've never been done Zorb750 had a good idea.

  7. #6
    WarrenJ's Avatar
    WarrenJ is offline Cadillac Owners Enthusiast
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    Re: '92 STS- What else should I do while I have the "cradle" out of the car?

    The blower motor is difficult to change with the engine in place on my '95. The blower motor housing simply cannot be changed with the engine in place. I'd guess yours is like that, no?
    If your blower motor housing has become brittle over the years, now's the time to change it.

    Regards,
    Warren

  8. #7
    JustDoug is offline Cadillac Owners Member
    Automobile(s): 1992 STS
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    Thread Starter

    Re: '92 STS- What else should I do while I have the "cradle" out of the car?

    Thanks Everyone!

    I have taken the time to clean everything, and will replace assorted gaskets based upon the oil/grime buildup while she's apart. And I had previously replaced the blower motor...what a PITA that was! I had forgotten how much fun that was.

    I've always been one of those "if it ain't broke..." sorta guys- not sure why I thought differently this time around. I suppose it is due to the relative ease of access now that my car is dis-embowelled in the back yard.

    After spending more time reading the posts, I suppose the old 4.9 isn't prone to any specific set of problems that would warrant tearing into it just because I have it out. It ran great! So, I'm going to replace the torque converter (the bearing surface that rides on the trans input shaft is galled from lack of fluid) and main seal, and call it a day.

    ...and finish cleaning everything up, new gaskets, plugs, and such...

    Thanks gang!
    Doug

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