Question about 1987 Porsche 944

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1987 Porsche' 944: Replaced Alternator, New Battery, but will not turn over with key. Will tow start and run but will not turn over with the key. When ignition is turned on most electrical systems function, except: No oil pressure registering, No Power seats operation, No Wipers and No turn signals. You can hear fuel pump functioning. Please tell me what my problem could be and how to remedy that problem. Thanks a bunch!

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  • laura_belle0 Jul 04, 2010

    I'll try what has been suggested. I would like a second opinion on this matter.
    Thanks!

  • laura_belle0 Jul 05, 2010

    Thanks for this possible solution...I'll try and update you with the results! Again, Thanks a bunch, especially for how quickly you responded. It means a lot when you're working on something and can't find the answer yourself in the manuals.

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Hello! The ignition switch, also called the ignition starter switch, can be purchased at (example) www.rockauto.com for $50...Gain access to the ignition key/switch...Unplug connector...Two screws hold the switch in place...Remove and replace...Inspect connector for frayed or damaged wiring...Radio Shack sells a no-touch spray contact cleaner called DeoxIT...Cost is $15...Spray it into the female connector pins...Do nothing else...Plug in connector and your done...

Guru..........Saailer

Posted on Jul 04, 2010

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If the car is not starting with the key but run with tow starts this indicates the Starter is perfectly working. But the problem is with the ignition switch.The switch is malfunctioning.Also get the ignition coils checked including spark plugs.This will help to confirm the exact fault. You have to test the voltage with meter at the ignition switch,ignition coils and spark plugs.It should show near to 12 volts at all the parts.It can be between 11 to 13 volts.Which ever part has low voltage that is the culprit.If all the parts checked out ok then its a short circuit in wiring's that has to be checked by continuity tester to locate the short. Thanks. keep updated for any more query.you can rate this solution and show your appreciation.

Posted on Jul 04, 2010

  • raj somaiya
    raj somaiya Jul 04, 2010

    keep updated with what happens .so it can be continued further if more help required.You can check the voltages before getting any part replaced.

    Thanks for the query.

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