06/6.0
New member
ok nice so even if the monitor is telling me my coolant temp is steady 198-202 its really about 100 or more degrees cooler in the bottom of the rad? if not cooler?
5r110 help!
- Thread starter 06/6.0
- Start date
Luke@MillerPerformance
Member
Yes this is how the radiator works.
Your coolant temp sensor is in the front cover on the engine side of the thermostat. Coolant flow is being restricted by the thermostat to get the engine to operating temp. If there was no temperature drop in the radiator or any of the coolers the system wouldn't work.
Luke@MillerPerformance
Member
So the pump blew up and you didn't send the converter out?
It doesn't matter what you do at this point, the damage is done. 5R pumps make a mess when they blow up. That junk is all through your coolers and trans again from the converter. Often times the end of the converter in the pump gets damaged too.
The only real option at this point is to pull the trans, have it taken apart and cleaned. Send the converter out for repair and probably get another new pump. You will need a new radiator and factory air cooler. Ditch the aftermarket stuff and flush all the cooler lines.
I am not a tranny expert... just posting my personal experience and observations.
In truthfulness I usually refer to Mark Kovalsky for most of my tranny questions.
Mark Kovalsky
Active member
Depending on the engine load and ambient, yes, that can happen.
In high ambient temps and max engine load you may only see a 15-20°F drop across the radiator. When it is -40°F ambient I've seen a 230°F drop from the 200°F engine temp to the ~-30°F coolant temp around the trans cooler. The trans cooler heated the coolant just a bit. The center of the radiator was at -40°F.
06/6.0
New member
obviously
Mark Kovalsky
Active member
You and I think it's obvious, but so many people don't understand. I can't begin to count hoe many people have told me that the whole radiator is at the same temperature as the engine.
Is the flow of transmission fluid thru the cooler controlled by a thermostat?
Mark Kovalsky
Active member
The flow out of the transmission is controlled by a thermostat. When the trans is cooler than a nominal 165°F the cooler flow is reduced by 90%.
excursionon40's
New member
Could this thermostat be stuck in the closed position or not operating? or does it default open?
Mark Kovalsky
Active member
It's just like an engine thermostat. Neither position is default. It is possible to stick in either position.
Luke@MillerPerformance
Member
Trash in cooler lines will do all sorts of bad things to the components.
