I have replaced the water pump.
The radiator has been replaced.
The steering shaft and steering gear have both been replaced.
At 136,000 miles my factory exhaust was just replaced with a dual exhaust, with glass pack mufflers.
Other than that, just wear and tear stuff.
I love the truck, it is the best vehicle I have owned. It is very reliable, it has never let me down or left me hanging somewhere. All and all, it's just a great vehicle.
I have a 1988 AW150 4X4. It is built strong, but I have had a LOT of problems with it.
Had to replace:
Steering gear twice
Front and rear ring axle shafts
Front rotors and hubs 3 times
AC compressor just went
Going to replace the timing chain for the 2nd time in 45,000 miles
And the list goes on.
Not sure if it is just my truck, but I think it might just be a lemon.
On the plus side it is great in the snow when it is working.
Just bought a used 1988 4x4 ramcharger. Previous owner kept up on maintainance. The radiator (Modine Model 939) had to be replaced. The engine was replaced about 20,000 miles ago. Just went 4 wheeling this w/e. This truck is awesome in the mud (has oversized tires and a 4" Lift) but got bogged down in the sand. I should have let some air out the tires. If you can't dodge it - RAM it. This truck is like a tank, goes almost anywhere.
I have a 1988 dodge ram charger 318, throttle body fuel injected, truck has no power, won't spin the tires.
I also had an 88 with 318 fuel injection, and my father's 40 hp 1929 model A had better acceleration. but, regardless of conditions, it always performed. I sold it for parts (it rusted out) and bought a 1978 with a 4 speed and a 360, and the difference was night and day. the 78 was built in Detroit rather than Mexico, and it seems better put together. it has far fewer problems, and is all-around a better truck. better mileage, better acceleration, WAY more power, better traction, and it a convertible. Dodge makes awesome trucks!