Just got my truck back from the shop that did the modifications. I'm happy with the performance (actually I'm ecstatic) and am adjusting to looking at the gauges on the pillar.

I had a BD deep tranny pan installed as part of this upgrade. On my way to work this morning (60 mile commute, over a 5400' pass/OAT=63) the tranny temp gauge did not get any higher than 125 except at idle (150 at idle at red lights).

What are the normal ranges for Tranny Temp? I need to know if my gauge is working!!

 

Where is the sensor installed?
If the sensor is in the hot line to the cooler and you are mostly at highway speeds with the TC locked you might not see any reading at all unless your gauge goes under 100F. About 180 would be normal in stop and go driving.
If the sensor is in the pan the readings will be much lower and may not read at all.

 

A good "general" guide is (if the tranny sensor is in the out line), about 90 to 100 degrees above outside temp. That assumes your just cruising along, no stop and go, and you are locked up. In traffic, and driving slow, the temps go up fast. Kevin

 

Sensor is installed on the pan. I haven't seen the temp go above 150 yet, and I've had my foot in a couple of times (trying to get used to the new power!!)

OAT is around 75 today.

 

Yours sounds about the same as mine. Mines in the line though. It gets to 125 or so driving to school every day. I cant hardly get it hot just stomping on it. Wait till thge next time you go through a packed McDonalds drive through, and the outside temp is fairly warm. Mine got up to 190 before i even noticed it. Your readings sound about right. Let it run in the driveway with the parking brake locked in drive for 5-8 minutes. That will get the temperature up good.

Eric

 

Ussually it should not get hotter then the engine.....180 or so....in extreme towing, 200-220 shouldn t really hurt it, but its getting warm. If its still building heat when its 180-200 (and still going up)it will end up hurting things......I have run them up to 240-250, but I didn t want too. If your pulling hills, thats when to watch it.....esspecially if you don t have the converter locked, it will build heat like crazy, and thats when its time to pul over and let it cool off if you want it to last. With the proper set up, it may never get that hot. If it does ad a cooler.

 

Bypassing the OEM cooler under the turbo will keep the ATF from the 185 deg heat of the engine coolant. I re-routed that line and added a large cooler with a fan that's plumbed between the front aux. cooler and the tranny input. ATF temps are consistantly 50 deg above the air temp in steady driving. Stop & go will get hotter, but never even close to radiator temps.

 

Thanks for tht info fortunate1. I thought about doing what you did, but then again, I need that heat in the winter. I have had mornings even with the radiator cover, I have had my tranny temps never get above 120, but that is on really cold mornings.

Where exactly did you locate the extra tranny cooler? Kevin

 

The higher the temp. the quicker the oil degrades!! If you run alot above 220, change the oil, and filter at least twice a year