Originally posted by mhingram
However, my lambda was very flaky according to my mechanic and would fluctuate at idle.
Umm, on the Bosch lambda sensor training course I tagged along to recently, they showed how the lambda sensor works - at idle, it is supposed to fluctuate regularly between high and low. Was this what it was doing? Or something else? I'm probably misinterpreting what you say..!
Also, check my steps for seeing if your throttle switch is working:
I'm chuggin' again!!