scan guage info

[RWDIII]

I'm not shure where to post this,but here goes.
I have a 2006 F150 with tow package that I tow with and installed a scan guage to show milage and water and trans temp.

on my last trip(not towing) my water was 193 and the trans was 153.
if the trans lines go to the radiator,shouldnt the temps be closer?Where does the computor read the temps at? BITOG members helped my feel better about using 5-20MC oil when towing,so I feel you guys know your stuff.Thanx
Randy

Semper Fi to any Former Marines

 

[Cup of Joe]

Trans temp of 150 is just right.

 

[pcoxe]

The transmission lines go to the "cold" tank on the radiator, so it is possible for the trans temp to be lower than the engine temp which goes to the hot side of the radiator.

 

[bepperb]

I'm not sure about the F150, but any vehicle I've seen where the transmission radiator was shared with the coolant the transmission portion is at the bottom which would be the lowest temp coolant. The coolant temp sensor is in the block where the coolant would be the highest temp (it has to be in the block loop on the engine side of the thermostat). So your ATF could be tracking the coolant temp, it's just that the coolant is that much cooler at that point in it's loop.

 

[1 FMF]

the transmission oil cooler is separate from the engine coolant even when integrated into the main radiator of the vehicle. It's not heat transfer directly between engine coolant and transmission fluid such as a liquid to liquid heat exchanger, the piping is separate. And at speed with airflow moving through the radiator there is little to no heat going between the transmission fluid and engine coolant, when stopped and without the radiator fan running then it's a different story.

 

[cchase]

Originally Posted By: TaterandNoodles
Trans temp of 150 is just right.



You can't take anything on that chart seriously, can you? A transmission lasts 20,000 miles if the fluid is 220 degrees? An engine lasts 12,000 miles if the pan temp is 135 degrees?

Even if you ignore the x-axis and just look at relative longevity, 150 deg F is clearly below optimal temperature for a transmission - a concept I can get behind.

 

[Cup of Joe]

Don't take it so literally, its a general guide. The fluid has a shortened life span as temperature rises.

Quote:

According to the transmission experts at B&M, the ideal temperature of an automatic transmission is 170 degrees F. At a constant 170 degrees, transmission fluid can live up to 100,000 miles, but for every 10 degrees of sustained temperature above this mark, fluid life drops by up to 50 percent. When fluid overheats, it oxidizes and breaks down rendering it ineffective. Perma-Cool, another leading cooler maker, notes that 90 percent of all transmission failures are caused by overheating. The solution is easy and relatively cheap.

Read more: http://www.carcraft.com/techarticles/116_0308_transmission_cooler_basics/index.html#ixzz1tdgAJBM3


Unloaded F series, looks like 140-160F is fairly typical when cruising depending on the type of trans cooler installed, OEM or aftermarket.

 

[cchase]

Originally Posted By: TaterandNoodles
Don't take it so literally, its a general guide. The fluid has a shortened life span as temperature rises.

Quote:

According to the transmission experts at B&M, the ideal temperature of an automatic transmission is 170 degrees F. At a constant 170 degrees, transmission fluid can live up to 100,000 miles, but for every 10 degrees of sustained temperature above this mark, fluid life drops by up to 50 percent. When fluid overheats, it oxidizes and breaks down rendering it ineffective. Perma-Cool, another leading cooler maker, notes that 90 percent of all transmission failures are caused by overheating. The solution is easy and relatively cheap.


I agree with the shape of the transmission graph but not with the x-axis. The engine oil graph I am completely skeptical.

 

[RWDIII]

Thanks for the info guys,Bitog is the greatest
The aux trans cooler is oem,part of the towing package.
I was dissapointed that I could not get oil temp out of the scanguage,so I was going to put on a aux oil cooler and guage,but I dont thinkI need it now.
Thanx again

Randy

 

[SteveSRT8]

Most newer cars sample oil temp. It's in there somewhere.

Probably one of the aftermarket folks will have it for you.

Have you checked Diablosport, Hypertech, Jet, etc.?

 

[dailydriver]

Were all of the '04 Blue Oval trucks CAN BUS systems??

If so, then yes, almost all of the brand name aftermarket hand-held tuners/gauge packs can retrieve the oil/trans temps and oil pressure.

If they are NOT CAN BUS systems (like my car

), then NO, it is VERY unlikely that this info can be retrieved.

 

[RWDIII]

The protocal is CANSF and according to the scanguage website oil temp is only available on the Diesel. thanx again for the replies.I know its not much but my towing milage avg for tank,varified by hand calcs,is 10.5 towing,17.5 empty.I like the feedback which I didnt have on the older truck,especially theGPH
setting.
Semper Fi
Randy

 

[01rangerxl]

153* sounds pretty normal.

My truck uses a factory external ATF cooler with a thermostat instead of using the radiator, but I have found that the outside air temp has the greatest impact on the transmission fluid temp. During winter it often won't go much above 150* at full operating temp. During the middle of summer with a load it might hit 180*-190*.