2013 F150 Ecoboost transmission hiccup?
Hello. I read every day the forum and have gotten great response on a few of the problems I have had. I have a 2013 F150 Ecoboost, 3.31 rear end, have had no problems with small camper a 2012 Slx 18...
Forum Discussion
In a recent 1000mile round trip I studied parameters (using my scangauge) of shifting with tow/haul engaged vs normal. Here are my observations with tow haul engaged:
• Truck will hold a gear for longer before downshifting. Typically 88-92% load is when a downshift occurs. If cruise is engaged, it will actually spike to 100% load before downshift.
• Torque convertor stays locked up MUCH longer. In fact, I don't think it will unlock until 4th gear.
• Upshifts are triggered at slightly higher speeds
• MPG is better due to convertor staying locked longer and less shifting
• An upshift WILL NOT happen until load drops below ~45%, give or take
• Engine braking engagement varies according to the amount of brake you are giving at the time. More brake equals quicker downshifts
• Engine temp tends to stay warmer with higher load. Downshifting a gear and turning some additional rpm will drop the temps a bit (Mine runs 200-210 unless I'm pulling a long, steep grade)
• trans temp stays cooler due to less TC slip and less shifting
Just a few observations. YMMV.
• Truck will hold a gear for longer before downshifting. Typically 88-92% load is when a downshift occurs. If cruise is engaged, it will actually spike to 100% load before downshift.
• Torque convertor stays locked up MUCH longer. In fact, I don't think it will unlock until 4th gear.
• Upshifts are triggered at slightly higher speeds
• MPG is better due to convertor staying locked longer and less shifting
• An upshift WILL NOT happen until load drops below ~45%, give or take
• Engine braking engagement varies according to the amount of brake you are giving at the time. More brake equals quicker downshifts
• Engine temp tends to stay warmer with higher load. Downshifting a gear and turning some additional rpm will drop the temps a bit (Mine runs 200-210 unless I'm pulling a long, steep grade)
• trans temp stays cooler due to less TC slip and less shifting
Just a few observations. YMMV.
