red RX-7

I have a '93 and when i start it up when it is cold, the rpm's shoot to 2,000 and hangs there for a second, if i crack the throttle once it stops right away when the car has been running it has no problem. i have no idea why it does this any help would be appreciated!

-Chris

dgeesaman

iTrader: (7)

This is normal, it's caused by the AWS = accelerated warmup system.

If you want know more, run a search for "AWS".

Dave

Quickfini

iTrader: (6)

You can start the car in gear to prevent this from happening. Or you can disable your AWS with block off plates as well.

red RX-7

that is probably it, i don't start my car in gear i will look into the AWS as well, thanks for both your inputs.

-Chris

RX 4 Speed

many discussions have been brought up on this regarding whether or not the AWS design is good or bad. Some folks don't like the idea of a cold engine shooting up to 3K rpm... I'm one of those folks, so I either start in gear or blip the throttle...