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post #1 of 11 (permalink) Old 07-27-2009, 09:34 PM Thread Starter
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trans temp question

it was 90 here today, I was cruising on the hiway doing 75, and my trans temp said 170-175 my truck was not loaded, and no trailer, should I be concerned?

what is the max temp a tranny can run at? it is stock, but still plan on putting in a John Woods Valve body. should I add a larger trans cooler?
will the valve body help with the temps?

rpms were at 2300, boost at 6-7 lbs fuel pressure at 61 lbs, 4:10 gearing

I'm not sure if all that matters, but what the hell,,,

thanks John

DieselPower1966

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post #2 of 11 (permalink) Old 07-27-2009, 09:48 PM
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Re: trans temp question

That sounds about right. After I went to the 6.0 trans cooler I am seeing no more than 155 lightly loaded. Haven't gone heavy with the new cooler yet.

If you don't ever see temps over 200 I would put the money towards a different mod unless you find a good deal.

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post #3 of 11 (permalink) Old 07-28-2009, 12:56 AM
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Re: trans temp question

No need to worry till about 220 or so. With the situation you described in 115* mine will run 170-180. When towing a 12,000lb toyhauler it will creep up to about 200 or so. I have a stock cooler and a JWvalve body.

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post #4 of 11 (permalink) Old 07-28-2009, 01:08 AM
 
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Re: trans temp question

Your fine, if you still concerned you can get a trans cooler.
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post #5 of 11 (permalink) Old 07-28-2009, 01:43 AM
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Re: trans temp question

Anywhere from 60-100F above ambient is normal.
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post #6 of 11 (permalink) Old 07-28-2009, 03:31 AM
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Re: trans temp question

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Originally Posted by Mark Kovalsky View Post
Anywhere from 60-100F above ambient is normal.
Yes and that makes it tough here. It was 114 yesterday and 113 at 1:30 this afternoon. When pulling a 12,000lb trailer on 6% for 8-9 miles things will warm up but 220 won't hurt it for a few min. 240-250 I would be concerned and change the fluid soon. My neighbor hit 250 for about 15 min with his allison. Got home and it smelled BAD. we changed it and it's ok. Don't know how he got it that hot, his 1st gen Dmax don't have a huge amount of power.

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post #7 of 11 (permalink) Old 07-28-2009, 06:57 PM Thread Starter
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Re: trans temp question

thanks all for replying, I was a little concerned but not any more.

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post #8 of 11 (permalink) Old 07-28-2009, 08:47 PM
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Re: trans temp question

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220 won't hurt it for a few min. 240-250 I would be concerned and change the fluid soon.
220 won't hurt it for a very long time. Ford allows up to 220 indefinitely. They allow up to 250 for no more than 1/2 hour.
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post #9 of 11 (permalink) Old 07-31-2009, 08:16 AM
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Re: trans temp question

Wow i tow a 8000 lb toy hauler and rarely ever see 200 degrees, even towing uphill on a 100 degrees+ day . Regular driving sees around 170- 175 degees on a hot day . It reads 165 degees on a cool day

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post #10 of 11 (permalink) Old 07-31-2009, 10:08 PM
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Re: trans temp question

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Originally Posted by british columbia View Post
Wow i tow a 8000 lb toy hauler and rarely ever see 200 degrees, even towing uphill on a 100 degrees+ day . Regular driving sees around 170- 175 degees on a hot day . It reads 165 degees on a cool day
You have a Torque Shift transmission. Those have a better cooling system than a 4r100.

If only those who knew what they were talking about replied, this thread would still be on page one.
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