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1993 Dodge Spirit Runs Rough and hesitates

Tiny
WILLIAM53
  • MEMBER
  • 1993 DODGE SPIRIT
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 98,000 MILES
The car sat for about 2 years. I've put 3 cans of B12 fuel treament thru 3 yans of gas also changed gas filter, plugs. Once you start it up runs fine and idles fine could be 1/2 mile or 10 miles varies. Shut it off and start it up runs rough wanting to die floor it picks right up but if you ease it it bogs down, If you pull over and idle the idle at a higher rpm it will smooth out but has a very high idle. With your foot off the gas it will run 30-40 miles a hour not even touching the gas.
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Friday, January 23rd, 2009 AT 5:51 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,164 POSTS
It sounds like there is a problem with the injector, fuel pump or a vacuum leak. Has the check engine light come on? Have you tried a fuel injector cleaner? Did you check fuel pressure? Pressure should be 39PSI with the fuel regulator hose connected and 47 to 50PSI with it disconnected. I'm not sure I understand. Did you leave the old gas in the car and add and additive?

Let me know.

Joe
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Thursday, March 5th, 2009 AT 8:27 PM

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