Unstable Engine running

1994 HONDA ACCORD
782,190 MILES • 4 CYL • AUTOMATIC
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JHARBLURR
  • MEMBER
  • 1 POST
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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Dec 13, 2010 at 11:02 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 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.
Dec 17, 2010 at 5:40 AM
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