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Transmission Operating Temp

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Old Aug 10, 2003 | 10:44 AM
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perazzi
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Transmission Operating Temp

I havea '96 F250, 460 E4OD. I installed a Hayden 11"x11" tranny cooler, left the factory one and removed the coolinig from the raditor.

I also put in a temp gauge, changed the fluid etc. I'm running between 180-200 degree's around town without towing, is that correct?

Granted the outside temps have been in the high 90's, but 180-200 seems high for 2 coolers in serires.

I tow a 24' boat in the heat of desert, I don't see how I won't have an issue when it's 115 degree's outside.

Any ideas?
 
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Old Aug 10, 2003 | 11:22 AM
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powerstroker250
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Transmission Operating Temp

I think you did it backwards. Reinstall the radiator cooler and remove the factory cooler leaving the hayden unit inplace.
 
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Old Aug 10, 2003 | 02:35 PM
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Transmission Operating Temp

I took the raditor cooler out of the circuit due to the engine temp. I'm running an OEM stat at 195 degree's. I figured that by removing the cooling lines from the radiator and just runnng them through 2 coolers that would be best.

I imagine that if I left the raditor cooler that tranny temp would be something higher than the engine temp of 195.

Shouldn't taking the factory raditor tranny cooler out of the picture and replacing it a larger cooler that doesn't use the engine cooling water, make the tranny run cooler?

I left the factory tranny cooler that's not part of the engine raditor, and seried that cooler with the new one. I figure I have 44 sq in's times the thinkness of the coolers of cooling capacity. Based on hayden tables I have enough cooling for a 30,000GVW truck.
 
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Old Aug 10, 2003 | 04:02 PM
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Transmission Operating Temp

The coolant in the BOTTOM of the radiator is already cooled thereby the atf IS being cooled by the coolant(lower than 195) then going through the air to atf cooler.
 
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Old Aug 16, 2003 | 11:22 AM
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Transmission Operating Temp

Powerstroker, got my answer.. I went to the river this week and towing my boat and gear, with the outside temp at 112, give or take, the tranny temp never went above 212.

The water temp did go to 220-225 on long hill climbs. I guess the system I installed works.

FYI: I called Hayden and asked them about what I had done and their response was, that most do it that way, ie. remove the radiator cooling part.
 
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