Idle Jumps Up and Down 92 Accord

It's only doing this when it's real cold out like today. 2 degrees.
Dealer can't figure it out. Any ideas on what migh be wrong? The Anti
Freeze level is fine as well.

Thanks

 

I agree with your opinion that the "cold" is the main cause of the problem
since the problem only happens when it's real cold. I seem to recall
reading a recent post about at least one product that you can mix with the
gas that might solve your problem. If no one will post the exact name of
the product, I suggest that you visit an auto parts store and talk to the
manager. He or she should be able to sell you what you need to solve the
problem. I also advise you to change out the fuel filter. At least one
person recently said that when he changed the fuel filter--his cold
weather problems went away. It turns out that water can get trapped in the
filter causing all sorts of problems during cold weather.

 

Thanks for the tip.

One thing I forgot to mention is that this only happens when the car's
been driven for a while. So it is warmend up when it happens. I pull
in to the driveway and put the care in park and it starts fluctuating.
Doesn't do it all the time though. As for the fuel filters they were
changed 10k miles ago.

 

More than likely, it is your fast idle valve. It also could be a vacuum
leak, too high idle speed, or perhaps a throttle cable that is too tight.

 

Thanks for the tip. I'll talk to the dealer about this. Since it's
intermittant they are having trouble figuring it out.

 

The three things that the local Honda dealer told me could cause this
behavior are:

-Faulty fast idle valve

-Faulty IAC(Idle Air Control) valve *Same as above--perhaps?
NOTE: This part is about $215.00 USD for an '89 Civic

-Throttle cable sticking

Recently someone here was having a similar problem with an Accord and they
posted that it was a thermostat getting stuck 'open'.

Take this list to your dealer and tell them to give one of these a shot.
Cheapest option first of course.

J. Perry

 

http://www.cb7tuner.com/vbb/showthread.php?s=&threadid=567

Cleaning it is trivial.

 

Thanks for the info. I saved a copy of your messaget to take to the
dealer. You would think that they've seen this before. I still see a
lot of 92-93 Accords on the road. Maybe most don't go to the dealer
anymore. Who knows.

 

Thanks. Looks like an excellent web site as well.

 

It is.
I've already done the $3 short/quick shifter mod.

 

bought some "wet "gas? Some gas line antifreeze cleaned it right up.
ed/ontario