91 Lumina stalling out when I amnot giving it gas.

The car has been running fine and has been well maintained. I had to change the battery last week and it seems the stalling out problem coincided with that. Im not sure if that is a coincidence or not. The car starts fine but then it will stall out frequently when im am not giving it gas . Such as stopping at a stop sign or coasting on the highway. Im far from being a mechanic but with help if its something minor and with direction I can make a good attempt. Im hoping to avoid going to a mechanic. Any help at all would be greatly appreciated.

Thank you Assuming that you have the 3.1L (T) engine, disconnecting the battery will reset the idle air control learn in the controller. Till it relearns it can cause stalling when you don't have your foot on the gas.

Of course the bad part is the idle learn procedure required you to use the OEM factory scan tool or TECH 2 to perform the relearn.

You could try this procedure to see if it will work.

1. Reset ECM by disconnecting battery for 10 seconds.
2. Block the wheels and put on the Emergency brake then With A/C turned off, start car and immediately put it in Drive. ( difference here is they don't put foot on brake which I guess could make a slight difference as the power brakes will use vacumn)
3. If the car does not start initially, keep trying WITHOUT putting your foot on the accelerator.
4. Let the car idle in gear for 10 minutes or until the cooling fan cycles once whichever comes 1st, versus for at least 5 and no more than 7 minutes.
5. Shut off the car for 10 seconds.
6. Start engine, place in drive and let idle for 5 minutes.
7. Shut off engine.
8. Idle is learned. Thank you very much! I just foloowed your advice and it seems to have worked. I drove it around a while and the idle seemed to stay consistent and it didn't stall out once. Appreciate the help.Car Repair Talk's forum.