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Sounds like you have a bad missfire.Have it scanned to see what code is stored.That should steer you in the right direction.
Only does this in wet weather!Any help would be appreciated!
Backfires also.I am third mechanic to look at this.Only code is a 41,using a mt2500 scanner and when starts its buck,fuel percent on scanner jumps to 49% and inj. pulse width around ten.combined we have replaced ecm,cts,p/u coil,crank sensor,iac.found and repaired bad wire harness by fuse block.What can be causing this.Also checked fuel pressure and volume before and after.
I get voltage reading constantly changing 6.8-10.2.I checked on my 97 dodge and I get steady 4.6 volts.This 93 dakota has a re-man computer just installed.Truck runs good at times,and mostly missfires the higher voltage is.
I know tps on the side,iac on the back.
Rear drive shaft removed and in neutral.