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Why does my car lope while idle

Tiny
BRANDONC
  • MEMBER
  • 1999 HONDA PRELUDE
  • 167,000 MILES
Whistle when revved, and transmission slip while taking off and buck while in motion? And how do I fix it? I have replaced the o2 sensor, mapping sensor, and the idle air control just like o rileys said and it made absolutely no difference. I even let it idle 20 min. With the radiator cap off to get rid of air bubbles ive basically done everything I know to do so please help me out?
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Wednesday, February 1st, 2012 AT 8:45 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
IF you hear a whistle, I would suggest checking for a vacuum leak. As far as the transmission slipping, is it a manual transmission? The clutch may be worn.
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Wednesday, February 1st, 2012 AT 8:47 PM
Tiny
BRANDONC
  • MEMBER
  • 2 POSTS
No. Automatic
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Wednesday, February 1st, 2012 AT 8:54 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Make sure the trans fluid is clean and full.
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Wednesday, February 1st, 2012 AT 8:59 PM

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