jonroe
11-21-2007, 06:35 AM
Folks,
After watching my Aeroforce OBD2 scan gauge since late August I have questions about expected normal trans operating temperatures. Note, I have only the stock trans cooler but I do have the FRPP deep aluminum pan and 2 qts more fluid. During late summer with outside temps in the upper 80s the cruising trans temp was about 190 with Lidio tune and the TC lockup at about 66mph. Most of the cruise time was below the lock-up speed so I suppose there was extra heat from the slippage. Now, in late fall with outside temps in the 30s I see the cruising temps in the mid 180s with the only real difference that it climbs to that temp slower. I thought the cruising temp in these cooler outside temps would be lower. Questions:
1. Is the stock trans cooler thermostatically controlled to maintain a temp over 180 even when the outside temp is cold? It appears to be a tube and fin model, not the plate type that controls by viscosity.
2. Are these temps still safe even though desired temps are more like 170? It seems so if Ford put the thermostat on the trans cooler.
3. I'd like to get an extra cooler to get down to 170 but do I need to?
4. Does running without lock-up on the highway cause too high temps? I did run a little time in the summer on the stock tune and noticed maybe 5 degrees cooler overall cruising with lock-up.
Thanks. Jon
After watching my Aeroforce OBD2 scan gauge since late August I have questions about expected normal trans operating temperatures. Note, I have only the stock trans cooler but I do have the FRPP deep aluminum pan and 2 qts more fluid. During late summer with outside temps in the upper 80s the cruising trans temp was about 190 with Lidio tune and the TC lockup at about 66mph. Most of the cruise time was below the lock-up speed so I suppose there was extra heat from the slippage. Now, in late fall with outside temps in the 30s I see the cruising temps in the mid 180s with the only real difference that it climbs to that temp slower. I thought the cruising temp in these cooler outside temps would be lower. Questions:
1. Is the stock trans cooler thermostatically controlled to maintain a temp over 180 even when the outside temp is cold? It appears to be a tube and fin model, not the plate type that controls by viscosity.
2. Are these temps still safe even though desired temps are more like 170? It seems so if Ford put the thermostat on the trans cooler.
3. I'd like to get an extra cooler to get down to 170 but do I need to?
4. Does running without lock-up on the highway cause too high temps? I did run a little time in the summer on the stock tune and noticed maybe 5 degrees cooler overall cruising with lock-up.
Thanks. Jon