I have a 95 Dodge 2500 with a V10 and 87,000 miles. About a year ago driving at cruising speed it would start misfiring and backfiring. If I pulled over and shut the truck off and restarted it everything would run fine until the next time which would be months later. However the problem started becoming more frequent until it got to the point it would not run over 45 miles an hour. I took it to a shop and they found the cats plugged and a code 43. I gutted the cats which seemed to work fine for about a week but it started to misfire and backfire again. The above shop suspected a bad PCM and thought it had to be calibrated and did not have the equipment to do so. However the PCM did not have to be calibrated so I took it to another shop that was recommended by the first shop. They found a code for bad cam position sensor. While changing it out it was discovered that the mounting bolt was broke so replaced cam sensor and bolt. Truck still not running right. Next test came up with poor fuel pressure 35 psi and 10 psi when acelarating. Replaced fuel pump and still not running right. Next they replaced the #1 coil and same thing. Finally replaced the #2 coil. Picked up the truck and ran it for about 100 miles and seemed to run fine. While driving down a gravel road I hit some washboard and the truck started to backfire and misfire again. When back on the highway it seemed to run alright again until yesterday and it started to do it at highway speed. Does anyone have any ideas on what could be doing this? Thanks in advance for the help.

 

Check and clean all electrical connections on the motor. Also do the grounds for the motor. Start there.

Is it just random misfire, or does it give specific cylinders? any codes for it?

 

an injector problem maybe? Have you did the spray test? I had a jeep cherokee that did something similar turned out i had bad injectors. just a thought.

 

make sure you're spark plug wire are routed properly

Check here
https://dodgeforum.com/forum/2nd-gen...of-speeds.html

 

Add an octane booster and see if the stalling goes away. Use a high octane fuel. The engine on low octane may be preignite but it hard for driver to notice. The computer hears it and activates the ASD...Auto Shut Down-- kills the fuel pump, fuel injection and ignition.

 

13 year old thread.......

 

yeah, but its good to add another posible resolution for future members to see.

 

Around here, the opinion is to just start a new thread to address the issue you're having if you can't find the solution to that issue in older threads...

 

i agree, however he posted a solution not a problem.
i wish the forum.was perfect and everyone.posted the final resolution/ outcome..... but that rarely happens.