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 A/T overheat light last night
#1067368
12/22/13 08:02 PM
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Joined: Oct 2013
Posts: 32
OP
Getting the Wheeling Fever
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I just put in a newer transmission last week.
This week I was doing something that maybe should have gotten me an a/t overheat light.
Situation:
Climbing a hill
9% grade
10 miles long
With enough ice that I was slipping my way up the hill
Thoughts on this one? I used redline d4 as the ATF, the transmission had only 20k on it. Seems to work fine otherwise.
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1999 Montero Gen 2.5
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Re: A/T overheat light last night
[Re: vectorsc]
#1067369
12/22/13 09:16 PM
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Joined: Apr 2008
Posts: 441
Mudrunner
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new transmission filter? did you flush the cooler?
1997 Montero LS with a motor swap a 1990 V6 12valve ported heads full 2.5in Ex I run stock tire size for Daily use, off road have 33x12.5 working on going trubo.
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Re: A/T overheat light last night
[Re: vectorsc]
#1067370
12/22/13 09:26 PM
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Joined: Jan 2000
Posts: 16,227
Web Wheeler
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What's the condition of your radiator/cooling system?
Since the AT uses the stock radiator to mainly cool the AT fluid, if its overworked, then your tranny will be more likely to overheat...
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Re: A/T overheat light last night
[Re: off-roader]
#1067371
12/22/13 09:30 PM
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Joined: Oct 2013
Posts: 32
OP
Getting the Wheeling Fever
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Radiator was new last year. Truck runs at 190 average according to scan tool.
Flushed all systems good. Used 4 cans of lubegard flush on it.
No codes in the TCU. I'm thinking 10 miles of uphill slipping in the ice coulda been enough for the factory setup, but this is still a first for me.
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1999 Montero Gen 2.5
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Re: A/T overheat light last night
[Re: vectorsc]
#1067372
12/22/13 10:04 PM
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Joined: Jan 2000
Posts: 16,227
Web Wheeler
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I know you said new but I figure it doesn't hurt to double check... Are the spaces between the radiator fins clean?
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Re: A/T overheat light last night
[Re: vectorsc]
#1067373
12/22/13 10:08 PM
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Joined: Jan 2000
Posts: 16,227
Web Wheeler
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I know you said new but I figure it doesn't hurt to double check... Are the spaces between the radiator fins clean?
I've done the grade going up I-80 to Tahoe which is way more than 10 miles and didn't have cooling issues... How fast were you traveling?
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Re: A/T overheat light last night
[Re: vectorsc]
#1067374
12/22/13 10:52 PM
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Joined: Dec 2004
Posts: 949
Rock Warrior
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Just put a Tranny cooler in it. I'll never run any AT with out one. Stock ones in the rads are just not enough IMO.
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Re: A/T overheat light last night
[Re: Monty]
#1067375
12/23/13 02:24 AM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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We've had several cases of false overheat indications due to water on the sensor. If you were in snow, especially with salt, I'd check that first. If you have a remote temp sensor gun, I'd read the temp on the tranny lines and see what they say.
Not responsible for advice not taken...
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Re: A/T overheat light last night
[Re: fasteddy]
#1067376
12/23/13 03:43 AM
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Joined: Apr 2008
Posts: 441
Mudrunner
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Speaking of over heating..... what temp does or should the light come on at?
1997 Montero LS with a motor swap a 1990 V6 12valve ported heads full 2.5in Ex I run stock tire size for Daily use, off road have 33x12.5 working on going trubo.
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Re: A/T overheat light last night
[Re: TainterRacing]
#1067377
12/23/13 04:03 AM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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Something in the high 200's F, somewhere around 280*F iirc. There's one spec somewhere in the fsm, but I think it's an error, stating the temp in *C instead of F.
Not responsible for advice not taken...
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