1997 Chrysler LHS excessive high idle

1997 CHRYSLER LHS
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LLMOM
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Engine Performance problem
1997 Chrysler LHS 6 cyl Front Wheel Drive Automatic 135 K miles

Have replaced tps,icm no change. Could it be that the pcm is bad.We are getting approximately 160 mile to a tank .
Mar 14, 2010 at 7:29 AM
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CH112063
  • ✓Experienced Mechanic
  • 1,320 POSTS
I would try first resetting the pcm by dis-connecting the battery or using the proper scan tool with your OBD connector below the steering column. The return spring, the body and throttle blade may be bad and a bad vacuum leak or sticking cable could cause this. What fault codes are you getting now and after you do the reset. Let me know, ok. Please drive it only if you must.
Mar 18, 2010 at 3:47 PM
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