I have a 2002 dodge 5.3 4X4 Quad cab, It's all stock other then the leveling kit, I have just startd to get a constant vibration felt through the steering wheel only when under load(on acceleration) and it dissappers when i let off the throttle, the vibration is no worse at varying rpm's or speeds. I thought I may have threw a drive shaft weight, but no. Cultch fan is not locked up. and all the fluids are new. I don't mind it but it drive the wife nuts. Any Ideas.

 

5.3? I am thinking 5.2 or 5.9???
I would check the plugs, wires, cap and rotor. May be misfiring under load.

 

Sorry,Don't know where i was.It's a 4.7, and there is no vibration in park at higher rpm and in drive with the brake on at higher rpm,only in motion.Going to remove the rear axle,drop it into 4 wheel and see if the vibration is still there to eliminate the rear end and drive shaft.

 

Have you checked the u-joints?

 

I have checked the u joints,front cv shafts ,front drive shaft ball joints(not related) What about torque converter/fly wheel.

 

You may not feel the ignition miss in park or at high rpms, they are usually most noticable @ lower rpms under a load.
Could also be in the driveline.

 

That'd be my thought, if the vibration subsides when the brake is applied. Applying the brake takes the TC out of lock-up.

On the same note, a light misfire is also greatly amplified through the drivetrain when the TC is in lock-up.

Scan for misfire codes first, then physically inspect ignition components. If there's any doubt, do a full tune-up. Plugs, wires, cap & rotor are a whole lot cheaper and easier than a converter.

 

How did you check them? If you didn't pull the driveshafts, you didn't check them properly. You very well could have a sticky u-joint. You have to pull the shafts and be able to freely rotate the joints...simply can't be done on the truck.