Hello all...hope someone out there might give me some insight. I have a '95 5.0 auto with dual tanks, that I am having some problems with. When I cruise at around 40-50 the engine runs ruff. I have tuned it up, changed the coil and the fuel pressure regulator. Could this be a vacuum problem? The only other thing I can think of is the FDM's...
Any help will be appreciated.

 

Is it cutting out? My bro's Jeep Grand Cherokee started doing that, and it was a bad EGR valve. Check your EGR valve and the vacuum line going to it.

 

doesn't cut out...but that is something I'll check out...thanx