Question about 1997 Mercury Mystique
Check the AIS (idle speed motor) the bypass passage may be clogged with crankcase vent sludge. This is a problem I found many vehicles
Posted on Apr 04, 2009
I have a 97 too, got it used and have had it for 6 years. Mine has over 120,000 miles on it. transmission has been replaced, now the alternator just went out. My car did this "cugging" and trying to stall for the longest time before the alternator went.
You should check all the hoses for sludge build up (especially if you let the gas get below 1/4 tank), then check the battery and altanator. These seemed to be the major problem with the car. Although now the electrical system in the car is going.
To make alternator repairs at a shop is just under $400.00 or you can do it yourself for parts and about 30mins of work for $170.00.
You can have the battery and alternator checked at Advanced auto parts or Discount auto parts for free.
Hope this helps! Other than that save your money and get out of that car!
Posted on Dec 16, 2008
Have a 98 mystique 2.5 liter with the same problem. You have to change the throttle position sensor $40-$50. Fixed my problem instantly
Posted on Feb 23, 2011
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