auto trans possable issues

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Apr 25, 2010 | 08:05 AM

#31

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

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From: SE Florida

Quote:

Originally Posted by wiccantoy

A external trans cooler was also put on but had to be piggybacked onto the stock one. Aparently the stock one has a thermastat inside to tell the trans when it needs new fluid.

No, that's not right. The stock coolers do not have any type of thermostat from the factory. They flow ATF anytime the engine is running.

Apr 25, 2010 | 09:14 AM

#32

wiccantoy

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From: North wales , PA and nj

Quote:

Originally Posted by Mark Kovalsky

No, that's not right. The stock coolers do not have any type of thermostat from the factory. They flow ATF anytime the engine is running.

than why was the trans temp rising after 2 miles. and now the trans temp is staying normal after the cooler was piggybacked to the stock one?

Apr 25, 2010 | 09:40 AM

#33

billfishnut

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From: Linden, VA

I have to agree with Mark. I rebuilt my trans and added an additional cooler. In short, you have probably tripled your cooling capacity.

Apr 25, 2010 | 09:47 AM

#34

wiccantoy

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From: North wales , PA and nj

i understand the fact the cooling has been doubled or trippled. i just dont understand why it would get so hot untill i used the stock one as a piggy back

Apr 25, 2010 | 09:57 AM

#35

billfishnut

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From: Linden, VA

Ok, so you had an aftermarket cooler flying solo and it got hotter? If so, that is weird and I don't understand why it would happen that way but I am 99.9% sure that the stock oil cooler is just a bent up pipe with fins. No magic.
The only reason to put a thermostat in an oil cooler loop would be to heat the trans. I am not aware of any manufacturer that would do that.
I could be wrong, just ask my wife.

Apr 25, 2010 | 10:15 AM

#36

wiccantoy

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From: North wales , PA and nj

I'm not sure y. My tranny guy said if it has a thermostat inside that would make sense. If not it would send trans fluid through the torque converter at a high rate and alow it to start to heat up.

Apr 25, 2010 | 05:11 PM

#37

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,734

Likes: 2,663

From: SE Florida

Quote:

Originally Posted by billfishnut

The only reason to put a thermostat in an oil cooler loop would be to heat the trans. I am not aware of any manufacturer that would do that.
I could be wrong, just ask my wife.

Ford does it, but not on the E4OD or 4R100. The TorqShift trans has an internal thermostat.

Quote:

Originally Posted by wiccantoy

I'm not sure y. My tranny guy said if it has a thermostat inside that would make sense. If not it would send trans fluid through the torque converter at a high rate and alow it to start to heat up.

That doesn't make any sense. There is no thermostat anywhere in your trans unless someone added one after the truck was built.

Apr 25, 2010 | 05:50 PM

#38

wiccantoy

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From: North wales , PA and nj

Not sure trans is from a 01 f550 with plate for hydrolic unit

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Apr 25, 2010 | 06:25 PM

#39

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,734

Likes: 2,663

From: SE Florida

I'm sure. That's a 4R100 and it DID NOT have a thermostat.

Apr 25, 2010 | 07:32 PM

#40

wiccantoy

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From: North wales , PA and nj

Quote:

Originally Posted by Mark Kovalsky

I'm sure. That's a 4R100 and it DID NOT have a thermostat.

yes im 99.9% sure it is a 4R100 i just dont understand why it would have heating issues with a larger than need brand new cooler. Than works fine when useing both