Truck is fine when you are driving, but when you push in the clutch to stop the idle will drop quickly sometimes. Occasionally, the drop of the idle will cause the truck to shut off. Tuned up the truck recently, could this possibly be a distributor problem? Please Help!!

Try cleaning the throttle plate on the back side and the IAC.

thanks so much,I will try that.

Thanks Tailight,I will try that.