2001 Dodge Ram 1500 idle problems

[Brotherbill]

I have a 2001 Dodge Ram 1500.The trucks idle goes up and down while in park.Any ideas.

[Brotherbill]

Anyone?

[KDinTX]

computer malfunction, try unpluggin the battery and let it sit for a while, or unplug the ecm fuse in the truck either should do it, after put back together drive the truck for a while to let it relearn an go into sensor ready status. if this dosnt work then it could be a throttle position sensor, mass air flow sensor, bad injector, trash in the fuel, fuel filter needin replacement, or fuel pump is about to go out, its a good list of things but we had to run it down in my buddies 99, hope this helps

[Brotherbill]

Thanks Ill try that.

[WoJo]

Maybe a small vacuum leak??? Reving up brings it back and slowing down loses it??

[Whale]

Throttle Sensor? I am no mechanic by no means, but I had one do the same thing ('03) and also caused the transmission to feel as if it was slipping.

[Shiner]

they are hard to fix over the phone...... But, start with the cheapest thing.... clean the throttle body