1998 MERCURY MYSTIQUE

  • Tiny
  • CathyB
  • 1998 Mercury Mystique

We have a 1998 Mercury Mystique. It runs great until you get up to about 65 mph. Then the car starts like almost stalls. It jerks real hard for a second then is fine. It usually happens going up hills if it needs to shift. I don't know what is wrong with it. I have had several people look at it and know one can tell me what is wrong with it. It has about 168,000 miles on it. Please Help

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Friday, May 4th, 2007 AT 5:07 PM

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  • Tiny
  • merlin2021
  • Expert
  • 17,589 posts

Test the fuel pump pressure. When was the last tune up? Including all filters? Then check mass airflow sensor.

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Sunday, May 6th, 2007 AT 8:35 AM

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