high idle

[sperk101]

2000, Mazda 626, 5 speed, 150,000 miles: Hi. The outside temps have dropped significantly in the last two weeks…just when I started having a high idle problem. When I start the car and go, it’s fine until have to put it in neutral. It normally idles at about 1000 rpm, but now it’s idles at 2500-3000. At times, the check engine light comes on, but always goes off as soon at I put it into gear. Once the car warms up, the problem goes away, and it seems to be fine on the highway too.

Should I let the car warm up some more before beginning to drive it?? Or is it something that I should have checked out ASAP? Anyone else have this problem in the cold temps?

Any input is appreciated!

[kjbuente]

This sounds like a sensor going bad due to the temp. I would have it checked when you get a chance, I do not think that it needs to go right way. But do not push it off to long.

[sperk101]

Thanks for your input! This morning I let it warm up about 10 mins before driving...it's hard to listen to it revving and jumping all around, but once it finishes it's fit, the car runs fine.

[mazdatech177]

ive seen a couple of clutch pedal position switches go bad and cause a very high idle. though its hard to say without looking at the car with my own eyes.

[unforgiving_86]

i have a 92 honda prelude 2.2 liter that dont idle high at all when u start it up just like normal u can evan driving it like normal but when u put in neutral after car has been drove it idles at 3,000 rpm's while rolling and but once u come to a complete stop it goes back to normal.. can sombody help me?