Bought a truck, need to get it from Indianna to Michigan.

I priced outdrives and motors and wow big difference looks like mercruiser 1 is cheapest choice. Won’t be using much just don’t need any more projects or money pits

 

Glad you got it home. Happy Trails

 

Make sure the ac clutch isn’t engaged. With it cycling like that only other thing would be command from ecm. Not sure what sensor would command that. I don’t remember a intake temp sensor.
For the drums I just shop around last I bought were from stone.

 

Trying to get my old feeble mind to remember. Above the AC compressor is the relay that sends and dumps the air to engage the fan clutch. I cannot remember where or which sensor would command that,but it should be water temp. To find the relay I'm talking about,build up your air and shut the truck off,then cycle the key on and off,with the ac switched on,you should hear the air dump from that relay,everytime you cycle the key. Trace the wiring and see if it goes to a sensor. When ac is engaged,clutch fan should run all the time,at least that's how mine was setup. Mine was a 95 9300 Eagle,yours might be a little different.
Also,check all the wiring for a break,or rub through.
I had the opposite problem on mine,I didn't think the fan came on enough,always like my engine to run cool. I interrupted the wire that fired the fan relay,ran a set of wires back to the cab and put a toggle switch in where I could engage my fan manually,when I wanted. If I was going to charge up a big mountain with a jag on,I'd throw the fan on a mile or two before I got there,get everything nice and cool,esp. on a hot day.
Hope this babbling helps,memory is not what it used to be.