Electric Fan / Water Pump Failure

[PetroleumJunkie412]

sorry I'm a relo'd yinzer I had to.

Excellent. I am a lifelong yinzer.

I'm going to head to picknpull and see if I can find one.
Do you guys have yours wired to a separate tstat? or does it run on ignition? Or by AC switch perhaps?

Mercedes C230 Kompressor fans fit the first gen core support. I just had mine on a switch as emergency backup. Regular fan is wired on an American Volt thermostat switch switch relay. Remember to put thermostatic switch in LOWER hose, not upper.

 

[gaz]

JerrySab,

Everytime I've converted from a crank shaft driven fan to an electric fan the water pump died shortly thereafter. My hypothesize is that the crank driven fan is a constant load on the water pump bearings, when it is removed the load change drastically reduces their lifespan.

I have gone as far as to always replace the water pump when changing to electric and I always advice it for the aforementioned reason.

Whether in Arizona or the Pacific Northwest, I haven't needed the fan on at all unless driving at speeds below 35mph or at a stop light.

87, 2.9L stock or rebuilt with a single 16" electric fan, engine oil cooler and an Explorer 2 row radiator.

 

[85_Ranger4x4]

My fans run off a painless temp switch/relay with the switch in the thermostat housing.

Don't hear much out of it unless at low speeds like gaz said. I do have the weak mechanical fan though which helps a lot.

Comparing apples to potatoes between my truck to a 2.9 though.

 

[JerrySab]

Comparing apples to potatoes between my truck to a 2.9 though.

..or apple juice to whiskey

 

[svtcards]

So. There exists a possibility that's unique to the 2.9.

I have a primary puller and two auxiliary pusher fans on mine. If I am running all three, the fans overcool the thermostat housing and prevent it from opening. Took a while to find the problem, but it exists.

A simple piece of tin over the thermostat housing fixes it.
[/QUO. U have 3 Fans on your truck?have a pic of that setup.curious how it looks

 

[PetroleumJunkie412]

I can take one.

It looks like a junkyard puked on it.

I did the radiator theory very differently though. Bought the smallest one I could find for a 2.9, then ran a high flow thermostat and a bunch of fans. Worked out well. Thinner radiator means easier to push/pull wind through it.

 

[85_Ranger4x4]

I can take one.

It looks like a junkyard puked on it.

I did the radiator theory very differently though. Bought the smallest one I could find for a 2.9, then ran a high flow thermostat and a bunch of fans. Worked out well. Thinner radiator means easier to push/pull wind through it.

Most oems prefer a single row... but they can make things fit easier as they design it to fit.

 

[bobbywalter]

Yeah....

It's a mystery.