1999 Plymouth Breeze Idles ruff in gear

1999 PLYMOUTH BREEZE
116,000 MILES • 4 CYL • FWD • AUTOMATIC
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DLEEGONE
  • MEMBER
  • 6 POSTS
Idles ruff in gear and smooths out when in neutral.
Dec 1, 2008 at 5:51 AM
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ZACKMAN
  • ✓Experienced Mechanic
  • 4,202 POSTS
I think your idle speed is too low.
Dec 1, 2008 at 6:38 PM
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DLEEGONE
  • MEMBER
  • 6 POSTS
would that cause it to only run ruff in drive and not in neutral?
Dec 2, 2008 at 2:03 AM
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ZACKMAN
  • ✓Experienced Mechanic
  • 4,202 POSTS
Yes it will. You may notice the difference in your engine speed at "neutral" and in "drive". Also, while you are checking your idle speed, check the idle air control valve. This valve is supposed to automatically correct the idle but apparently it is not doing its job.
Dec 2, 2008 at 12:03 PM
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