Hey guys, so I just got my edge cs and installed the tunes on to it and under half throttle and full throttle acceleration the truck bucks and shudders through the shift. Anyone have insight on why? It shift smooths stock

 

Return to stock setting and see if it goes away. I would suspect a missfire. When coils fail thats the way they sometime do it. A scan tool that shows live missfire count is needed for diagnosis. Or wait and someday you might get a CEL..

 

I immediately put it back to the stock done. Problem seemed to go away. Will test more tomorrow

 

So it runs and shifts completely fine on stock. Still think I should check for missfire? For you guys running edge tuners what do you have your settings adjusted to in the tune itself? Or do you not customize them? I feel like it holds the gear WAY to long before shifts and I leave them set at stock however it still adjusts them differently. Maybe adjusting them -1, -2mph?

 

Tossed the trans only time back on and it does the same bucking and shaking when shifting when you get on it. Anyone recommend a scanner to find the misfire or give me some kind of direction on what to do here?

 

Okay so I noticed omw home from work today coming to a stop the rpms go down to 500...you think cleaning the iac is a good place to start? Any input would be appreciated

 

How old are the plugs? Cleaning the throttle body along with the IAC never hurts and it dont cost much. Might be time for a tune up if you havent done one for awhile.

 

Plugs have all been changed in the last 10k miles. I'm very routine on regular maintenance

 

Did you use motorcraft stuff. Motorcraft denso or NGK are the only plugs that are reliable. How about the coils? did you replace the boots? could just be one of them is weak and your symptoms indicate that. The only way to find those coils that are failing is with a good scan tool that reads live missfire counts. A snap on or the dealer. I've heard there is an app for smart phones that does it. "torque pro" or something like that. I have not used or seen it used so thats not a sure thing. dealer dianostic charge is about $100..

 

Buy a Sonax Sure Cure Kit. Most parts from the kit can be installed without removing the transmission except from PTFE seals & Retaining ring.

http://www.sonnax.com/parts/3036-the-sure-cure-kit