Possibilites ranges from A to Z and if you want to start replacing components and hoping that it cures the problem, you could be in for a great shock and not to mention the time wasted and frustrations.
Try the scan tool again and if it still can't communicate, you need to be diagnosing why it is not communicating. There must be an error and it could be a faulty PCM or a broken somewhere.
Idling is mostly due to idle control system or throttle faults, which is consistent with the stalling when you hit the gas pedal.
Sunday, October 21st, 2012 AT 4:54 AM