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Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by ALLDATAdiy.com users over the course of many years.
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  Jim Grant's Tech Tips

90 Lincoln Town Car, Transmission Problems
Q: I own a ‘90 Lincoln Town Car. There are several problems with the car and I would like your input on either fixing them or getting rid of the car. First, when the car is cold, it has a hard time shifting to second (the tranny has been overhauled approximately 2 years ago). When it does shift, when coming to a stop, it downshifts erratically then stalls. after starting the car again, it will drive fine then it will hesitate and the "Check Engine" light comes on. Also, sometimes the "Airbag" light might come on and the temperature reading will drop. Could it be an electrical problem (with the last problem)?

A: The first thing you should address is the "Check Engine" light. For a transmission to operate correctly it needs a good running engine and on today’s vehicles that also means a happy on-board computer. Why ? Because the transmission uses information from the engine computer to operate. While the computer problem is being checked, the level and condition of the transmission fluid should be inspected. If the transmission oil has over 30k then the transmission oil should be flushed. Correcting the complaining computer problem and a little transmission service may have you shifting right again. As for the Air Bag light effecting the engine coolant temperature reading? I have not a clue. But it would be in your best interest to determine why the Air Bag warning light is coming on.

 
     
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