Checking for bad connections?

[SeeYaLater5.9]

Figured id start by checking some connecctions that could cause trouble. Lumpy jerky idle, sometimes will just kill out, dead pedal issues (can usually let out and it's fine once you get back into it)

Are there any areas of concern I should check? Disconnect and reconnect? Anything else to look at?
Thanks

 

[Firemanmike69]

Got any codes? Try unhooking the batteries for a half hour and hook them back up and turn the key on and slowly press the throttle all the way to the floor let up and do it again, then turn the key off and fire up the truck.

 

[SeeYaLater5.9]

No codes. I've done the whole battery thing (not recently) but never noticed a difference. Tach Is either always dead or jumping all over the place like it's on meth. I just can't figure this out but it's gotten progressively worse over the past 2-3 months. Somedays it's almost undriveable others I can run a 90 mile trip without a hiccup.

I just hope it isn't the vp. I guess replaceing the APPS will be next.