I have a 1995 ram 1500 with a 5.9 and 46rh. It was passed from my mom 5 years ago and was parked for 5 years and didnt have time or money now that I do I rebuilt the whole motor. I put new head gaskets new intake gaskets new podiuem gasket cleaned the intake changed oil oilfilter and new oil pan gasket and new transmission filter and gasket new diffrenental gasket and fluid trans mission fluid is full syntetic also rear fluid new dist. Cap new wires new plugs new belt all hoses and im still having this problem when I take off in first I start to shake only from700 rpm to about 1500 rpm then after thatits smooth untill I hit o/d aka 5th rpm drops like it should to about2000 rpm and it starts to shake like the truck wants to fall apart why could this be oh and NO check engine light help

 

Look in the faq section for the TSB on plug wire routing. You might be getting some cross-talk on your plug wires.

Also, re-check your firing order...... (don't ask why I know this.....)

 

Just a FYI... the truck only has 4 gears, not 5. The final "gear" is actually just the torque converter engaging/disengaging. Since you rebuilt the motor, did you do anything with the distributor?

Side question... what fluid did you use for the transmission and differential?

 

Sorry I know its not.5th I just call it that also put a new dist cap and redid wires and as far as fluid I cant remeber if it was atf 4 or 3 and the diferental I believe was 90 something

 

ATF+4 is full synthetic but i hope you didnt use any other type of full synthetic. Re-Check the level of the fluid fully warmed, in neutral and on level ground. Good luck.

 

found out that the spark plug gapping was off by a tiny bit i made sure that they were all at .035 and now i dont have the problem