GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

trans overheating with 40k cooler?

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Old Jan 13, 2012 | 02:07 PM
  #11  
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When I was having troubles with mine running hot. My trans would whine in first gear for some reason. Then oneday the whine and running hot was over,Fixed itself.
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Old Jan 13, 2012 | 03:15 PM
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With e-fans mine doesn't get above 160 in stop and go traffic. But I do have a 60 E. And it gets into the 70s here in the winter.
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Old Jan 13, 2012 | 03:23 PM
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Yes It does have a whining noise in first gear but I don't no what's causing it. Anybody know what's causing this?
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Old Jan 13, 2012 | 03:44 PM
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Wish I could help more, but when I made my thread I never mention it cause I thought it was normal, but when gauge stop reading hot the whine was gone.. All I had is a heat gun to check temps. Mine would hit 260* sometimes, but heat gun only would show 185*
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Old Jan 13, 2012 | 03:45 PM
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Mine whines 1st really bad. But most them i heard with 100k+ miles on them are gonna whine.
My brothers with 315k miles sounds like a old eaton roots blower.


Mine runs about 100* if its 32* ambient. Takes forever to warm up enough to lock up.
Sounds like you have a slipping problem or not enough air flow over the cooler.
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Old Jan 13, 2012 | 03:51 PM
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that could be 1 of the reasons it gets so hot cause u by pass the radiator
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Old Jan 13, 2012 | 04:14 PM
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Originally Posted by nonnieselman
Mine whines 1st really bad. But most them i heard with 100k+ miles on them are gonna whine.
My brothers with 315k miles sounds like a old eaton roots blower.
That's about what mine sounded like and I only had 69k on the clock lol
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Old Jan 13, 2012 | 04:59 PM
  #18  
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Well I wish mine would fix itself. lol Just talked to a local trans shop and he told me that I most likely have a torque converter lockup issue but I can fell the converter locking up but maybe its just partially locking?
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Old Jan 13, 2012 | 04:59 PM
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I would check your converter lock up % with the scan tool.. if it is slipping excessively it will cause high temps.. i would also check your air flow across the cooler.
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Old Jan 13, 2012 | 08:40 PM
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My trans cooler in the radiator was clogged when i got it so i bypassed it and only running the trucool 40.

I wish i could run it in the radiator so it would warm up quicker.

You can log converter slip on your laptop.
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