OBD2 CAN data
OBD2 bluetooth connector (Veepeak OBDCheck BLE Bluetooth OBD II Scanner)
Car Scanner Pro app
Toyota Landcruiser Prado
2010, 5 speed Automatic A750, 4.0L V6 Petrol. Car totally stock at the moment, highway tyres. Just got the car in January after 10 great years of owning a 90 series.
Analysing:
Drive:
Sydney to Melbourne over ~9 hours. Flat driving, entirely highway except for some stops. Up to 20 degrees ambient during the day, down to about 8 degrees at night before coming into Melbourne.
Key points:
Other notes:
~11.0L / 100km average on trip computer. On highway drives I’ve found the trip computer overestimates the fuel that is burned, and from refiling full to full gives more like 10.5L/100km. But the opposite is true for around-town driving, where the trip computer underestimates the fuel burn by about 0.5L/100km as well (around 14.5L/100km in real life, 14.0L/100km on the computer).
Just posting as an FYI for those interested, if there are any comments or questions. It's a good baseline to see how the temps change once I start hitting some VHC tracks again.
I am wondering - do aftermarket trans coolers have any impact on the Torque Converter Temp? As that one is the one that seems to be air cooled, and gets hotter than the Pan Temp and Engine Oil temp.
Glen
OBD2 bluetooth connector (Veepeak OBDCheck BLE Bluetooth OBD II Scanner)
Car Scanner Pro app
Toyota Landcruiser Prado
2010, 5 speed Automatic A750, 4.0L V6 Petrol. Car totally stock at the moment, highway tyres. Just got the car in January after 10 great years of owning a 90 series.
Analysing:
- Coolant Temp
- ATF temp v.2 (Pan Temp)
- ATF temp v.3 (Torque Converter TC Temp)
- Engine Oil Temp
Drive:
Sydney to Melbourne over ~9 hours. Flat driving, entirely highway except for some stops. Up to 20 degrees ambient during the day, down to about 8 degrees at night before coming into Melbourne.
Key points:
- Coolant temp seems to be controlled to 85 degrees regardless of the outside air temp.
- ATF Temps v.2 (Pan) and v.3 (TC) are interesting to watch. When cruising in 5th gear, without any torque converter slip, they converge to the same temperature, somewhere between 52 and mid 60 degrees. And the absolute temperature variance may simply be about ~40 degrees above ambient temp, where the cooling system keeps it constant relative to ambient rather than at a consistent absolute temp like the Coolant Temp being kept at 85 degrees.
- When either engine braking by changing down the gears, or accelerating up a hill, which causes torque converter slip, the v.3 temperature separates very quickly and gets ~5-8 degrees hotter than v.2 temp. While driving at a constant speed and when not getting torque converter slip, the temperatures converge again quite quickly to the v.2 temp
- What’s interesting is when engine braking down to a stop, the v.3 stays hot while the car is stopped and can’t seem to converge back to the v.2 temp. My guess here is that the v.2 is cooled from trans oil, and the v.3 is air cooled. So when the car isn’t moving, the v.3 isn’t getting cooling.
- Engine oil temp tracks ATF v.2 temp reasonably well. This would indicate they are sharing the same oil cooling system?
- Another notable small effect is when engine braking, the Coolant Temp in the engine drops immediately from say 85 to 82 degrees. This must be as the engine is spun up faster without the extra fuel added in.
Other notes:
~11.0L / 100km average on trip computer. On highway drives I’ve found the trip computer overestimates the fuel that is burned, and from refiling full to full gives more like 10.5L/100km. But the opposite is true for around-town driving, where the trip computer underestimates the fuel burn by about 0.5L/100km as well (around 14.5L/100km in real life, 14.0L/100km on the computer).
Just posting as an FYI for those interested, if there are any comments or questions. It's a good baseline to see how the temps change once I start hitting some VHC tracks again.
I am wondering - do aftermarket trans coolers have any impact on the Torque Converter Temp? As that one is the one that seems to be air cooled, and gets hotter than the Pan Temp and Engine Oil temp.
Glen
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