Gez89SHO said:
You could also try to make it re-learn the idle. Here in (southern) PA, I had a problem with the car stalling until it warmed up. After making it re-learn, no problems.
To make it re-learn, simply disconnect the battery, then start and let idle for about a minute.
I'm sorry this is the incorrect idle reset procedure.
1: True, you disconnect the battery for a few minutes.
2: Reconnect and start the car.
3: Let it idle for about 45 seconds till the idle comes down a bit
4: Then turn on all the accessories (ac/rear defog, lights, blower, etc), put the car in D (for an atx), and then turn the wheel 1/4 turn slowly in each direction. This puts every load the car will see on the idle.
5: Turn off all the accessories then let the car idle again for a couple minutes.
This will make your car idle properly if it was an idle problem to begin with.
Bouncy idle, stalling, high idle, all of these can be potentially caused by an inproper idle reset procedure.