DiabSoule

Well the other day i removed my P/S and A/C and did alittle looking around for obvious problems relating to my IDLE. It was only off alittle so i used the air adjust screw on the plenum. Car was fine for afew days. But now stalls everytime i stop the car ( will stall before the car comes to a stop while slowing down). Has no problems starting right back up. regardless of the clutch being in or out. Im thinking its the TPS. The other day i pulled the BAC and it seemed to be in working order. This happens regardless of the heat being on or the lights. Just let me know what you all think. OR shoot me lol..

85 Gsl-se
M/T

Gregs

When coming to a stop, the idle drops significantly below 800 rpm and then comes back up. Sometimes, the car stalls near the very end of the warm-up cycle if the air conditioning compressor is engaged.

This one is relatively rare, but a devil to find if you don't know what to look for. Due to wear or misadjustment, the throttle plates are closing too far. The EGI system compensates by fiddling with the BAC valve. This works pretty well most of the time, but every once in awhile the BAC system is not quick enough to catch it and the idle drops like a rock. Then it comes back up. To verify that you have this condition, try turning the Air Adjust Screw. If the throttles are not letting much air pass, turning the Air Adjust Screw (which comes before the throttle plates) won't have much of an effect on idle speed. Also, if you disable the BAC system (by disconnecting the electrical connection for the Vent Solenoid Valve and the Vacuum Solenoid Valve) the car will hardly idle at all. The Standard Procedure for Adjusting Idle will also not have much of an effect.

To adjust the throttle stop screw, first take note of it's current position. The object is to turn the throttle stop screw inward an eight of a turn each time--propping the throttle plates open more and more. When you get a linear response from the Air Adjust Screw, you are probably in the right place. The Standard Procedure for Adjusting Idle will also work properly. You will need to use it since changing the resting point for the throttles will put your TPS out of adjustment.

Gregs

hope that helps

RotaryRyan

Sorry, i just had to

DiabSoule

Now that funny Ryan.. Actually Gregs i had read that i have the whole site printed out on paper just thought id get another opinon from you all. I guess im ganna go out there and start going threw the standard idle adjustment stuff. See if anything Jives.. I ll let you guys know what i find out in my endeavors.

DiabSoule

Ok so here's A update.I worked my way threw the idle adjust procedures WOOT WOOT. It's alittle better but not perfect and still want to stall on me. When im adjusting the TPS you just need voltage on one side of the conector RIGHT ? Do the amount of voltage matter or no? Also when i unplug my BAC things seem to work alittle better. Can i leave this thing unplug as i have no A/C? Also is it normal for the Air supply screw to be almost all the way tight to have the idle come down within reason.