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Old 07-28-2010, 09:30 AM   #1
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Aux Transmission Cooler make engine run hotter?

I installed a transmission auxiliary cooler on my rig, I do towing on a regular basis, now I see my engine run a little over the 210 deg mark loaded with the A/C on. I installed the TAC between the front grilll and the radiator. Is it normal for the engine to run hotter? Anybody else out there experienced the same effect? Is there an alternate installation location I should look in to? Please help. Thank you.

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Old 07-28-2010, 09:57 AM   #2
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My aux transmission cooler was in front of the grill and the engine ran no hotter. Just over the 210 mark on a hot day like you're having now in Tucson is perfectly normal, heck our engines are supposed to run at 210 on even cool/cold days.

Here's a pic of how my '97 was configured with its aux transmission cooler purchased from Currie.
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Old 07-28-2010, 10:02 AM   #3
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Perform the smoke test to see if air is getting drawn through the cooler. Get a napkin and light it on fire and hold it in front of it and see where the smoke goes.
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Old 07-28-2010, 10:50 AM   #4
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Quote:
Originally Posted by Jerry Bransford View Post
My aux transmission cooler was in front of the grill and the engine ran no hotter. Just over the 210 mark on a hot day like you're having now in Tucson is perfectly normal, heck our engines are supposed to run at 210 on even cool/cold days.

Here's a pic of how my '97 was configured with its aux transmission cooler purchased from Currie.
I understand, it's just that seeing the needle move past the 210 mark is alittle unnerving. I installed a B&M SuperCooler, I don't recall exactly the dimensions, but it definetly covers a larger area the the one you have. That's why I wondered that maybe it's blocking some of the air flow to the radiator. I will try the test T4R mentioned, if flow blockage is an issue I might have to find another place to install. Any recomendation?
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Old 07-28-2010, 01:40 PM   #5
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Jerry, how did you rig up that aux cooler? did you daisy chain the collant lines?
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Old 07-28-2010, 01:50 PM   #6
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Jerry, how did you rig up that aux cooler? did you daisy chain the coolant lines?
It was plumbed into the output line of the OE radiator cooler, in series with it. The output line is on the passenger side of the radiator.

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