i kno that ive seen something on this but cant seem to find it.

this is the BAC valves fault correct? because the car no longer revs to 3k on first start up in mornings or long sits.

 

If it's dying at idle when you have all those things on, I would suspect the BAC, plus the fact your not getting the 3k startup.

 

okk. Anyone have an online reference book that i can use to test the BAC?

 

You can have the car running and w/the heater or A/C on if possible w/o the car dying pull the plug off of the BAC and the car should die or come very close to it. Also, you can do an ohm check on the two terminals of the BAC and it should be in the 10 to 12 ohms range. You could also apply voltage to the terminal that would have the Black/White wire feeding to it and place a ground to the other terminal and the BAC should click and this should be done a few times to make sure it isn't sticking. When doing this make sure you don't place the voltage source and the ground source to the same terminal of the BAC by accident or you will risk damaging the circuitry and don't mix up the two BAC terminals either. Lastly, when the car is turned off after running a while the BAC ought to vibrate for a period of time before turning off.

 

If you're looking for the Factory Shop Manual (FSM) on line, there are links provided for downloading it in the FAQ. Here's the link for S4:

http://www.teamfc3s.org/main/factory...ual/1986_1988/