Truck stalls when slowing down and idle changes from 500 to 1100
The other day my truck started stalling when I take my foot off the gas to slow down or stop. Most of the time it will start right back up but sometimes I have to give it a little gas. The other thing I noticed is that the RPM's will be at 1100 one day and the next day or the next time I start it it sometimes idles at 500. Can someone tell me what could be causing this to happen please.