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Unstable Engine running

Tiny
JHARBLURR
  • MEMBER
  • 1994 HONDA ACCORD
  • 4 CYL
  • AUTOMATIC
  • 782,190 MILES
Hello.I need to know what would be the problem of my car, Honda Accord 94. When the car temp is cold, the engine runs steadily. When it reaches the normal temperature, it started to run unstable. Ive changed the idle control, serviced the car and clean the body throttle. Still it runs the same. I hope you help with my problem. Please.
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Tuesday, December 14th, 2010 AT 7:02 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
If the engine is surging after warming up, it means excessive air is getting past the throttle body to manifolds. Check the Fast Idle Thermal Valve ( FITV) located at bottom of throttle body. It should be fully closed when operating temperature is achieved.

Check for clogged coolant hoses of FITV.
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Friday, December 17th, 2010 AT 1:40 PM

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