1989 Honda Civic High Idle

1989 HONDA CIVIC
188,000 MILES • 1.5L • 4 CYL • 2WD • MANUAL
Avatar
FTADUFFY
  • MEMBER
  • 2 POSTS
Intermittently the engine will idle high. It should idle around 700- 800 RPM. Every so often it will idle high any where from 1200 to 3000 RPM. It does not matter if it is hot or cold. Sometimes if I turn the engine off and restart it will be OK.
Jan 23, 2014 at 10:02 AM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
try cleaning both sides of throttle palte and iac hole with choke cleaner see if that helps.
Jan 24, 2014 at 7:03 AM
Avatar
FTADUFFY
  • MEMBER
  • 2 POSTS
I tried that and it "seamed" to work for about 5 days. Next I am going to try cleaning the IAC Valve. I know how to get it off but, except for the two screws, I am not quite sure how to take it apart. Don’t want to make anything worse I could not find procedure on Internet. Thank you for your help
Jan 24, 2014 at 10:48 AM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
the iac doesn't come apart it is a replaceable part.
Jan 24, 2014 at 12:33 PM