1999 Mitsubishi Mirage '99 Mirage Initially Revvs at low sp

Tiny
KTPRIME
  • MEMBER
  • 1999 MITSUBISHI MIRAGE
Engine Performance problem
1999 Mitsubishi Mirage 4 cyl Automatic

I have a '99 Mitsubishi Mirage, that started behaving strangely a couple months back. Whenever I would first start up the car it would uncontrollably rev and stutter forward ever few minutes or so until I got the car up past around 35 mph or so. The weird thing is that after hitting 35 that first time, dropping back down to lower speeds would cause no problems at all. The problem seemed to either be getting gradually worse or to be adversely affected by the growing cold. Then, finally, one day about a week ago it just wouldn't start at all. One of my friends thinks the starter might have gone, but would that explain the other problem?

Any ideas what might be going on?
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Friday, January 15th, 2010 AT 1:30 PM

1 Reply

Tiny
KHLOW2008
  • EXPERT
Hi ktprime,

Thank you for the donation.

The initial erratic idling could be due to the Idle Air control valve which might require cleaning, servicing or replacement.

As to the non starting, it could be something else. You would need to test if it is due to mechanical, ignition sparks or the fuel system.

https://www.2carpros.com/kpages/first_things.htm

The above link provides informations on how to go about checking why engine would not start.
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Sunday, January 17th, 2010 AT 5:21 AM

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