2000 Honda Accord Stumbles when warm

OREGO004

MEMBER
2000 HONDA ACCORD
6 CYL
2WD
AUTOMATIC
118,000 MILES

My 2000 Honda Accords Engine runs great 99% of the time. However, about every 4-5 ignitions it stumbles a bit at start up but doesnt stall only looses power and usually when warm. It takes about 15 seconds to get back to normal idle speed, after that it runs great. The fuel injectors are clean as well as new spark plugs and coils. I dont think the fuel pump is faulty because it doesnt happen every time. Any constructive help would be greatly appreciated since I dont know why this is.

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JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Has the check engine light ever come on?

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Thursday, July 16th, 2009 AT 10:36 PM

OREGO004

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5 POSTS

At first it came on. OBD II said it was random misfire. After that it hasnt come on and its been over 6 months and there is no change in fuel eficiency

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Sunday, July 19th, 2009 AT 7:20 PM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

The only thing I can say is check fuel pump pressure. Also, has the car been tuned up reciently?

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Sunday, July 19th, 2009 AT 10:48 PM

OREGO004

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5 POSTS

Yes, about 7 months ago(2000 Honda Accord V6 needs a tune up every 105,000 according to OEM). The problem started just after so I took it to get the spark plugs checked out as well as the connections and tech could not find anything wrong because they could not reproduce the problem. Battery charge is good as well.

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Tuesday, July 21st, 2009 AT 8:12 AM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Without the check engine light, it's hard to identify this type of problem. You most likely have an intermitent problem with a throttle position sensor or the idle air control valve. However, if they don't act up long enough to set the light, we are stuck guessing.