My 94 Dodge 5.2 has a very werid issue, it will runs great most of the time, but when on the highway and when towing, the power goes away.
The power can come and go, while towing a car yesterday 200 miles, the truck ran (just ok), not good, and got 12.2 mpg. On the trip home towing only the empty trailer, the truck had lost even more power and used WAY MORE fuel.
The plenum has been checked, but that would not allow the truck to run ok at times and run terrible on the highway, and while towing, which is where the power loss accures most of the time.
The cat was gutted by the previous owner, but the muffler shop told me that a 94 model would not be effected, only a 96 up would be effected by the removel of a cat.
Any Thoughts?
MArk

 

Forgot to check the notify me via email,,,,, sorry
Any and all sugestions and opinions welcome.

 

Did this problem happen at once or slowly.

 

Just over time I think, but pretty fast. Motor runs great, no oil usage at all.
Even driving with out towing, a hill will cause the truck to slow to 50 miles per hour and need to be kicked down pretty hard to pull.

 

Problem solved,,,
Replaced the computer and all is back to normal.

 

Glad to hear it.