Cold Idle Speed Variation

[RIT]

When my 2003 Vibe with the base engine and 5-speed is warming up in cold weather (below 20 F, for sure) the idle speed goes up and down and up and down - until it warms up for a few minutes. Does anyone else see this, and is it normal, or an indication of a problem. I have about 70K mikes, and changes the plugs about 15K miles ago.THX

[Whelan]

Not for me, my 05 Trix XR AWD hangs at about 2k for a few minutes, then slowly drops down to 1000. When its toasty it hangs at 700-800

[RIT]

You ought to have a lot of data on this - living up North. Have you ever noticed your car doing this ?

[Whelan]

My 94 Saturn had the wave effect. It would idle at around 2k at startup and then wobble to 1500 then back to 2k before finally settling in.It's just the computer. I wouldn't worry to much about this as it could be a simple thing like cleaning your MAF, TB. Also throw in a bottle of Complete Fuel System cleaner in your next low tank of fuel. It seems that your car may need a few small things like this. If your car does not spend much time in that cold weather, i.e. months at a time, then the computer may not be used to the cold. On the other hand it has been a staedy 20 degrees each morning for the last two weeks here in CT. Cold, but the car idles smooth till warmed up.

[BlueCrush]

Quote, originally posted by Whelan »Not for me, my 05 Trix XR AWD hangs at about 2k for a few minutes, then slowly drops down to 1000. When its toasty it hangs at 700-800Mine does the same as yours, Whelan. Mine starts at 2K for about a minute then drops to 1200 for a few minutes then to 700-800 when warm.

[feelin'thevibe]

Mine also does this, when you first start it, you can hear it outside of the car. I don't think anything is broken, it still runs fine otherwise and is giving great mileage.

[joatmon]

http://forums.genvibe.com/zerothread?id=15929