Join Date: Jul 2016
Thanked 211 Times in 204 Posts
Where you read the trans temp from matters too, the internal (ecu) reads pretty hot compared to the pan. Hence why the built in trans temp warning light is something stupid high like 280. Too late IMO, but I get the logic
I like reading from the hot line out of the trans myself. Good baseline of the heat the trans is making and it responds very very fast to changes in the trans, like lockup.
2008 6.7 2500 4x4 Auto 3.73
2000 5.9 3500 4x4 Auto 4.10 (sold)