[VictoryRed08]

I've noticed a couple of times now when I'm sitting with my foot on the brake while I'm idling a stoplight that the RPM will drop to about 500rpm (it normally sits around 1000rpm at idle) and the engine will "rattle" as if were going to stall.

Has anyone experienced this or know what it might be? The dealer basically said unless they can produce the issue, I'm SOL.

Thanks in advance.

 

[VictoryRed08]

...either A/C cycling on/off...or, might it possibly be the transmission prematurely shifting back into lock-up at the stop?

No idea, I do notice that when I'm on a hill if I stop for an extended period of time I begin to roll backwards once I let off the brake, but that is the transmission shifting into neutral correct?