1994 Dodge Ram Shaking at low RPM
I have a 1994 Ram
A few months ago i started having problems. When the truck warms up the engine shakes violently at low RPMs. I've changed the spark plugs, spark plug wires, distributor cap, rotor, fuel pump, EGR valve, cleaned the injectors, replaced the injector seals, and had the engine decarbonized. I also did a compression test. All cylinders were in range but cylinders 2 and 3 were on the low side of normal. Everything i did helped for abt 2 hrs and then back to normal rough idle and violent shaking at low RPMs while in dirive. After i changed the EGR valve tonight the problem stops immediately when the over drive is turned off. I'm thinking the problem might be a clogged catilitic converter or a faulty O2 sensor. Any advice would be appriciated.