Losing speed

Tiny
PYRO89
  • MEMBER
  • 1990 MITSUBISHI ECLIPSE
  • 230,000 MILES
While I was driving on the freeway at 65 mph I accelerated to avoid another driver. When I pressed down on the gas pedal the car made some small jerking motions and began to decelerate. While in 5th gear it decelerated all the way down to 55 mph. Since it did go down I tried to put it in 4th gear to compensate. As I did that the car tried to slow even further, so I quickly returned it to 5th gear where it topped out at 55 mph. This has not happened before as I have taken this car as far as 80 mph before.
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Monday, May 6th, 2013 AT 5:33 PM

4 Replies

Tiny
ASEMASTER6371
  • EXPERT
Could be low fuel pressure or bad cat converters.

You only need to post 1 time

roy
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Monday, May 6th, 2013 AT 5:35 PM
Tiny
PYRO89
  • MEMBER
Sorry. Was having trouble posting. So low fuel pressure or bad cat converters. How can I find out if either or is the problem.
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Monday, May 6th, 2013 AT 5:39 PM
Tiny
ASEMASTER6371
  • EXPERT
Use a fuel pressure tester for the fuel and a back pressure tester for the cats/

roy
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Monday, May 6th, 2013 AT 5:42 PM
Tiny
PYRO89
  • MEMBER
Ok. Thank you for the help. I shall try them out and see what happens.
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Monday, May 6th, 2013 AT 5:43 PM

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