Help Needed surging

[stroker4life]

My truck sometimes lunges or surges in top gear. It happens when I try to increase my cruising speed lightly by five miles an hour or so. It does seem to matter if I am empty or loaded down with a 38 gooseneck, stock or programed up. Two different dealerships have wasted lots of fuel trying to duplicate the problem, with no luck. I think it is either the transmission or torque convertor, THOUGHTS?

 

[DaveBen]

What do you drive? Fill out your signature by going the the USER CP, in the blue line above. Sounds like an EGR problem to me.

Dave

 

[ponyexpress94]

X2...Sounds like a dirty/sticking EGR valve to me.

 

[madams000]

If you have a tuner does it have a record on it.
If so record the incident.
I had an engine problem that was difficult to cause to happen, so I recorded the strip, sat in the vehicle with the mechanic and he looked at it, Bobs your Uncle he could diagnose the problem. I will add the mechanic was skeptical and took some persuading but once I got him in the truck the job was done.
Hope this is useful.

 

[stroker4life]

surging response

I hope the information in the signature helps. I am not sure if the SCT unit has a memory. I haven't had it very long. Any other help is appreciated.