Wow!
The least expensive could be a vacuum leak. I know that you stated that all of the major lines were checked, how about some of the lesser ones? Do all of your heater, and AC controls work properly? As you know they are vacuum controlled.
I think I hear a leak around the plenum above cylinder number 2, I plan to investigate this (spray starter fluid tomorrow)... You know.. this could be huge!
Your CEL is NOT on? You are not getting any codes?
I don't think faulty O2 sensors, or EGR stuff would cause stalling, but a dead battery could. You may want to consider changing the battery if it is pretty weak. A new and fully charged battery even with a weak alternator should supply sufficient amperage and voltage long enough for you to determine if it is the issue or not.
Also of course, good grounds are important.
IF you haven't done so recently, you may want to pull codes to see if anything comes up.
Last edited by BroncoJoe19; 08-17-2008 at 10:38 PM.
Reason: spelling
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