Overheating during towing

[jroach321]

thanks for everything guys!

[chris4x4]

Originally Posted by Ridgerunner

If memory serves me it's about 2''x6''

Sounds like an oil cooler. Your tranny cooler is integrated into the radiator. You can see the tranny lines going into it near the bottom.

[chris4x4]

It just dawned on me that you said the boat was 4000 lbs. If you are going by the boat weight, that does not include fuel, trailer, or anything else in the boat. If this is the case, you could be well over 5000 lbs.

[Ridgerunner]

Originally Posted by chris4x4

Sounds like an oil cooler. Your tranny cooler is integrated into the radiator. You can see the tranny lines going into it near the bottom.

Thanks Chris!!!

[AFBombdude]

You could run an electric "pusher" fan on the front of the radiator. Turn it on/off manually before the hills.

[Front Runner]

Originally Posted by jroach321

My 01 tacoma 4x4 3.4 is overheating on every hill when i pull my 4000lb boat. It does great on flat but overheats immediatly on hills. Overdrive is off and ect/power is on. I know its a bit much to tow but it shouldnt be overheating.
any suggestions besides the obvious tranny cooler

This may be a stupid question, but how do you know the tranny got hot also???

[Janster]

Originally Posted by Front Runner

This may be a stupid question, but how do you know the tranny got hot also???

You don't..... these trucks don't have any sort of tranny temp gauges.

However - If these toyota trucks are anything like the Jeep Grand Cherokee we used to own..... if you have any problems with the tranny itself (based on data the computer is reading from it) - the system will go into LIMP mode and prevent the transmission from destroying itself.

When I say LIMP Mode - I mean, it'll shift hard and/or strange - missing gears, etc. You might even get a CEL if it gets too bad.

But again, just a guess.... I would hope they are setup like this to prevent damage.

[Front Runner]

Originally Posted by Janster

You don't..... these trucks don't have any sort of tranny temp gauges.

However - If these toyota trucks are anything like the Jeep Grand Cherokee we used to own..... if you have any problems with the tranny itself (based on data the computer is reading from it) - the system will go into LIMP mode and prevent the transmission from destroying itself.

When I say LIMP Mode - I mean, it'll shift hard and/or strange - missing gears, etc. You might even get a CEL if it gets too bad.

But again, just a guess.... I would hope they are setup like this to prevent damage.

Limp mode would be nice. I wonder what do we have on our trucks to prevent the tranny from destroying itself????

[chris4x4]

The newer trucks with autos have a tranny temp light that will iluminate when the tranny starts to get hot. I cant remember at what temp it lights up.

[Janster]

Originally Posted by chris4x4

The newer trucks with autos have a tranny temp light that will iluminate when the tranny starts to get hot. I cant remember at what temp it lights up.

Which reminds me.....<off topic> is Scangauge ever gonna come out with tranny temps?

[jroach321]

I assumed the tranny was hot because i could not touch the metal part of the shifter.

[Front Runner]

Originally Posted by chris4x4

The newer trucks with autos have a tranny temp light that will iluminate when the tranny starts to get hot. I cant remember at what temp it lights up.

When you say "newer", would that apply to my 06 also?

[chris4x4]

Originally Posted by Front Runner

When you say "newer", would that apply to my 06 also?

Yes. Not sure what year they started with the tranny dummy light, but 05's and up have it.