Originally posted by praxis
Did you use the SeaFoam before? At a shop that I managed, we had some trouble with SeaFoam... running it through the vacuum system. It was causing high idle/ or stalling problems, because of the SeaFoam deteriorating the vacuum hoses and clogging them.
Check the vacuum system, even if you didn't use it before.
And I also agree with NeverBX :cheers: ...sticking throttle, among other preliminary checks.
Originally posted by Bakeoff
vaccum issue.
This is the first time I've tried Sea-Foam. I normally use STP every third tank of fuel, but I thought I would try Sea-Foam as I've heard it's a bit more potent then STP F-I cleaner. I didn't run it through the vacuum system though as it recommends on the can, I just put it in the tank with fresh fuel.
Where might I check for vacuum leaks? Are there hoses that are prone to failure that you could point me to? I've never had the manifold off and the bolts appear to be tight, so I'm assuming the gaskets are still intact. Is this a good assumption to make? The car has 130K on the clock and still has all original vacuum hoses on it, so it probably wouldn't hurt to replace them just for safe measure.
I will also check for a sticking throttle, as that seems to be a widely acknowledged idea.
Thanks to all!!
Originally posted by NeverBX
if its the IACV it wouldnt stick in one place it would constantly fluctuate 1000-2000-1000-2000 like as if soone was reving on you.
if its really cold where you are it could be the timing since the ecu advances the timing every 11 degrees when the rolling intake temp drops.
if its your timing heres a test when the car is idling just tap the gas about 1/8 if it drops back down to 700-1000 then its your timing cause of the cold weather.
Thank you for explaining how the IACV works. I am very familiar with the GM IACV but didn't know how similar/different it is to Honda.
The temperature has been a bit cold here lately, but not
that cold. It's been between 20 and 30 degrees F when my problem has occurred.
I have tried bumping the throttle a bit but to no avail, the only way to decrease the idle to normal, is like I said, turn off the engine and restart it.
Thank you again for taking the time to explain the IACV and timing to me!!