|
Tim,
The Aux air valve is "more" open when the car is cold, as such it provides more air to the meter plate and raises it. This provides more fuel along with air. So in cold weather it increases the "idle" for a while (warm up mode) As the wires to the element in the Aux air valve heat it up, the valve closes to provide much less "extra" air, and the idle gets to its normal value. So if at start-up with a cold engine, if your idle rises to say 2K rpm, and then slows as the engine "warms", your Aux air valve is likely working fine. It is easy to disconnect electrically, and then it should stay as open longer (maybe engine heat will start to shut the valve, I'm not sure). My gut tells me the Aux air valve is not your issue, but testing with the wire disconnected is pretty easy to do.
I had a similar cut out issue with my SC and it was a bad fuel injector. I see you have metal lines so pulling them for inspection is a chore I've never done. Mine are flexible lines and easy to pull. Can't really advise if there is a way to test your injectors with metal lines in the car or not, sorry. If you can, you can get vials for each injector (at Amazon) and inspect them for drips, spray pattern and equal volume. Be sure to have a fire extinguisher handy if you do this test (as a precaution).
__________________
BareRearedRookie
|