At Wit's End

[thom4782]

I'd appreciate any advice because I'm at my wit's end. Here's the story in a nutshell.

The symptoms are: 1) car throws codes P0410 and P1411 as soon as the secondary air monitoring system kicks back in after a CEL reset, 2) engine hunts for idle between 600 and 1000 rpm after coming up to operating temperature, and 3) remote key operates unpredictably.

I've had three separate shops - all with great reputations - try to diagnose what's wrong.

I've replaced all secondary air parts, the A/O separator, the MAF, the gas cap, and the O2 sensors. All tests for vacuum leaks show there are no leaks.

I have no idea what else to do and none of the shops can suggest an answer. I just don't know what to do next.

My guess is that the problem lies in the car's computer and that it needs reprogramming? What do you think. Can you suggest anything else.

Thanks