Have a Ram 3/4 ton V10 with manual tranny. 45,000 miles and has run perfectly till now. Was driving home last night in a blizzard. I started off fine in 2wd and truck ran great. Shifted into 4wd and after about a 1/2 mile down the road, the truck began misfiring and the engine eventually died. The speedometer was bouncing all over the place???... I restarted the engine which seemed ok at a stand still and tried again this time shifting back into 2wd. The truck ran fine. At home I drove around the block in 4wd and it started misfiring again. What gives? Some sensor down in that manual transmission or transfer case?... I'm pretty novice about this computer and sensor stuff. Or is it something else? Thanx for any help or suggestions. Great forum by the way.

Lane

 

you might have a vacuum leak on the hoses going to the CAD that engages the axles. I haven't had this problem but I've heard of the vacuum leak causing problems. Do a search on it here or on Pavementsucks.com, they should have the info to help you with it.