Question about Saturn SC2

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1995 saturn sc2 problem with tranny, engine revs to 3000 rpm's when in park, then drops to 500. the alternator has needed to be changed twice in the last year. I had the engine replaced 9 months ago (not sure if any electrical issue could be connected to that). What is wrong with my saturn?

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  • ahmco Aug 02, 2010

    thanks. I'll look into it.

  • ahmco Aug 02, 2010

    Does the the PCM need to be "re-set" when the alternator or battery are changed out?



    After reviewing another blog, seems this is an issue with Saturn.

    http://www.topix.com/forum/business/auto...



    Just don't want to spend $150 on the PCM, if it may not fix the problem. Any suggestions on where to start first...Catalytic Converter?



    Thanks

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Hi! You may have an electrical failure. One thing that can cause this is a faulty PCM (powertrain control module). The PCM has connectivity on all electrical current that runs in the car including the engine and transmission. When the PCM is faulty it gives current irregularities that may cause to electrical failures no wonder you had to replace the alternator twice. Once the PCM is replaced you'll be good. Hope this helps and have a good one!

Posted on Aug 02, 2010

  • ahmco Aug 03, 2010

    Does the the PCM need to be "re-set" when the alternator or battery are changed out?

    After reviewing another blog, seems this is an issue with Saturn. http://www.topix.com/forum/business/auto...

    Just don't want to spend $150 on the PCM, if it may not fix the problem. Any suggestions on where to start first...Catalytic Converter?

    Thanks

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