Question about 1993 Saab 900

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Saab 900 Auto won't go in reverse gear. No history known, and not known if auto kick back working to specs. Is there a diagostic code read out on this issue?

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  • davio5 Apr 24, 2010

    Thank you for your assistance so far. There are several Lubegard auto trans fluid additives, Platinum, Red, Green, etc. Could you kindly advise which is the preferred additive for this problem with Saab auto trans sticking valves?



  • davio5 Apr 24, 2010

    Yes, very good.

  • davio5 Apr 24, 2010

    Yes, very good.



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If it threw a code,it will be stored in the computer,you will need to have the codes read to find out,and the code,the problem sounds like a stuck valve in the valve body,or the gear select cam is worn,only way to find this out is to go in and check.There is an additive,called Lube Guard,that can treat the valve body,if that is the problem,it is a synthetic additive,really great.But if this does not help,it would have to be gone into.

Posted on Apr 23, 2010

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Apr 24, 2010

    The additive has the car specs on the bottle,and there is a I know a listing on the bottle for german vehicles(swedish)that will apply to you vehicle,or look for the low friction additive,I think is the green bottle.



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