1992 Chevrolet G Series Van (G30) Questions

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have replaced the oil seals in transmission and got a new transmission and still the bus won't shift into other gears the reverse won't work, when hit the gas pedal won't go, hear it working but not moving; i have a bluebird bus not a g series van but there was no option for bluebird
i need to replace my water pump and i have decided to buy the pump for it online but the mechanic did not specify if it was standard or reverse type rotation in the pump. i want to get the right one. thank you
I have changed the temperature sensor and at the throttle position sensor. I have also replaced the thermostat with another 195° thermostat. I recently have changed the spark plugs and the distributor cap and condenser plus new wires. I have checked the hoses with starting fluid to check for leaks and have found none. Today I replace the clutch fan because the other one was stuck and not spinning freely. I thought this was the answer to my problems. But the engine keeps running cool and the engine cuts out on me if I try to go to more than 30 mph.I do have and exhaust leak on the right side manifold but I do not think it is that bad. I have also replaced the radiator cap and am running fullscreen antifreeze in the radiator. I also replaced the coil. This problem actually started about 10 months ago. I thought I was having a fuel pump and filter problem so we had that replaced at that time. Please help I am running out of solutions. Thank you so much. Mark & Cathy.
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