Question about Oldsmobile Regency

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I have a 1993 olds regency with 250000 miles on it. the transmission was overhalled about 30000 miles ago. A year ago when I was in Mississippi the air temp was 106 degrees. the car would not shift into overdrive until we went thru a thunderstorm about 3 hours later and the temp dropped about 30 degrees. It has been running fine until a few days ago when we took a day trip of 90 miles one way.The air temp was mid 80's.After setting about 2 hours we headed back home and the car would not shift into overdrive all the way home.The next morning when I took it to the transmission shop it ran fine,as it has since. The shop couldn't find any thing wrong. It had a DTC code 39 ,tcc problem which was cleared. Other than the overdrive problem it ran and shifted fine.I would appreciate any help that you can give me. Thank you, Glenn Pike

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  • glpbap43 Sep 02, 2010

    1993 olds 98 regency elite with a 3.8 engine

  • glpbap43 Sep 02, 2010

    1993 oldsmobile 98 regency elite / 3.8 - 6 cyl

  • glpbap43 Sep 03, 2010

    This problem has only happened two times in the past thirteen months.The car does'nt shift into 4th gear which is overdrive. I don't know if the converter locks up but don't think it does. The TCC solonoid does'nt control the 3 to 4 shift. If it was the solonoid and especially the screen were bad wouldn't it happen more often and at more varing temps? glpbap43

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Hi,

Could I have the model and size of the engine please.

Thanks

Jason

Posted on Aug 29, 2010

  • Jason Maurirere
    Jason Maurirere Sep 02, 2010

    Hi,

    The problem you have is the TCC solenoid in the transmission which you need to get checked/cleaned as this is the reason you are having this problem.

    There is one other area that could be causing this problem also and that is the TCC filter but this is also in the transmission and is under the TCC solenoid, so either way just get this 2 components checked and tested and then you will be fine after that.

    Hope this helped, let me know if you need more infor mation.

    Thanks

    Jason

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