well this is all after my trucks been sitting for a couple weeks waiting for the trans swap. After the trans swap truck would run fine, but a couple time it would idle rough and give me a barely idle. light would come on and would give some injector code, can't remeber which one exactly. Now I am getting U1016 Loss of class 2 communication with VCM, can't get that one to go away. Also installed some e-fans and Im getting u1301 battery short. Maybe I have a bad ground for the fans, but really can't figure out the U1016 code.


Please help this is really bugging me

 

Went to go to lunch , thing runs rough as hell light came on again????? Its like 1 cyc. isn't firing. WTF I can't how it act this way after a tranny swap. Tranny shifts fine motor runs like **** now.

 

Nobody has suggestions????

Im gonna change my plugs and see if that helps, Then probably clean the MAF since those can do weird things.

 

Sounds like you may have pinched a wire. What trans did you swap in?

 

FLT LVL. 5 4l65e

Also found that the little boot on the fuel pressure reg. has alittle crack in it. Im cleaning the maf no and tightening all I/C hoses, ive been hearing some whistling under boost kind of like when roll up the windows then crack em alittle and makes that whistling sound. we'll see what happens??

 

waste gate gasket seemed to be making the noise, It blew out lol. well plugs didn't help. next on my list is try and swap in the old pcm. If that doesn't help I may through on some new plugs wires?????? Im at a loss at this point. Is there any pcm ground wires that I may have forgot to reconnect around the tranny?????

Damn truck feels like its running on 4 cyl.. now.

 

I am also chasing a rough idle issue after a trans swap out but i also did a pulley change and a re tune. I am just as confused as you are.

 

I loaded a new tune in also, but it was acting funny even before this.

 

still showing codes class 2 loss of communication with vcm and class 2 battery short???? Where the hell could my problem be????


sure seems like 1 or more cyl. aren't firing, but can't figure out which one

 

Check what you did last. The trans swap look for a ground you may have missed and the connections on the trans are seated properly.

Sounds like it could be a wiring problem with the e-fans install so check it over very carefully.

Check your connections on your PCM. Maybe even take them off and re-seat them. Are all the pins seated properly.

Look around for a wire that might have been damaged or pulled out of place when you were doing the other work.

Sorry not sure what exactly could be the cause but review everything that you did recently.

Good luck.