studder around 60mph

[krisP]

randomly get a quick jolt/studder when I'm holding around 60 mph. all sparks are brand new copper nkg's, all plugs are new mopar less than 1 year old. throttle body is clean. any thoughts ?

also, trans fluid is at the right levels and clean looking, will be doing a pan drop/filter change soon.

 

[HoosierJeeper]

What do the RPMs do?

 

[krisP]

What do the RPMs do?

its almost like they dive down for a split second, its too fast to register on the guage.

 

[HoosierJeeper]

What about the MAP sensor?

Not sure how a MAP sensor differs from a MAF sensor, but when the MAF sensor in my LR3 acts up it becomes the bucking bronco.

 

[renegade 04]

My jeep did the same thing and I ended up replacing the MAP sensor for a unrelated problem and the issue went away.

 

[tommudd]

Funny the 03 did that every now and again when I first bought it, it was running so was on the back burner as far as trying to find out what it was. Installed lift, larger tires and regeared and now haven't noticed it for a long time. Almost forgot that it was randomly doing it until I read this, strange . :emotions34:

 

[krisP]

mine will do it for a bit then go away for a few months and repeat. Ill replace the sensor for s&g's

 

[HJSteve]

Does it do the same thing if you down shift out of overdrive and try accelerating?