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AR15.COM
1/10/2007 3:02:52 PM EDT
I have a 2001 Dodge ram 4X4 360 motor.  I am having problems with it.  If I am driving around and let off of the gas it starts bucking.  It does not do it all the time, it idels and runs fine under a load.  It had a tune up about 35000 milea ago I got the expensive plugs with a ten year waranty also got lifetime wires and cap and rotor.
Any sugestions
1/10/2007 3:27:15 PM EDT
[#1]
is the check engine light on? is it burning oil? idling high? does it accelerate normally? have you cleaned the throttle body lately?
1/10/2007 3:51:15 PM EDT
[#2]
Engine light is not on.  Does not use oil, idels fine.  Accelerates fine.  I have never cleaned the throttle body.  I do put fuel injector cleaner in every oil change.  The truck also has 187,000 miles.
1/10/2007 7:00:15 PM EDT
[#3]
Could be the crankshaft timing sensor. My dakota did similar and that fixed it.
1/12/2007 10:42:50 AM EDT
[#4]
Thanks for the help.
1/12/2007 12:32:10 PM EDT
[#5]
bucking under deceleration is almost always a too lean condition.  (does it actually backfire?)

timing might be too far advanced (or lost its vacuum advance)
or the Throttle body is getting hung up and closing too early

It is kicking any codes out?

I'ts almost definately an electrical/throttle issue.