1993 Honda Civic engine revs

Tiny
AREATHAJ
  • MEMBER
  • 1993 HONDA CIVIC
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 117 MILES
Engine revs up and down while in park
Wednesday, December 9th, 2009 AT 10:18 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi areathaj,

When surging occurs, check for :

1. Leaking vacumns.
2. Improperly adjusted idling speed.
3. Faulty fast idle thermo valve ( FITV).
4. Low coolant level or clogged coolant hoses to EACV and FITV.
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Thursday, December 10th, 2009 AT 6:13 AM

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