how low can i turn my idle down
 

anyone know how low i can turn the idle down on my 95 12v its at 750 right now but can i go lower

Im sure ya can but why do you want to??:pca1:

I wish my engine would idle at 750rpm.

As from what I heard that Dealers DRB II tool has the ability of adjusting a slight amount up or down. I've never had it done so I not sure if this is true or not...

But I do know the ECM is fixed in the ECM and there is no adjustment for the end user...

Its a 95 - the idle adjustment is manual.

The idle should be set at 850 rpm, in gear with AC on. Im not sure why you want it low. When I got my 12V the idle was low - I would have to give it pedal to start it and then when I would put it in reverse to back up, the engine would die.

If you got to low the oil pressure light will come on and the guage will go to 0. It happend in my 97 I would have to give it some fuel to keep from doing it if it was anywhere near cold it didnt want to start and it was a stick. In an auto anything below 650 makes it want to die at start up!

ive got a non ac truck so what should my idle be set at

Should be a smidge over 800. Apparantely the OEM tach in the truck isnt very close - youre supposed to use an external one.

Really??? I didnt know that. So when i push it up to 3500 what is it really spinning?

There is a TSB somewhere on the tach. I looked quick but couldnt find it.