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| 02-15-2019, 05:46 PM | #1 |
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Really Twisted
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Prolonged transmission warmup times
How long does it take for everyone's auto transmission to warm up? I seem to get stuck at 90-110F unless I'm driving for atleast 30-40min
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2015 BMW M235i F23 - Sold Last edited by TwistedX; 02-16-2019 at 07:45 PM.. |
| 02-16-2019, 07:42 PM | #3 |
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Really Twisted
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Happened during the summer too, not as long but still took alittle while. Now weve seen temps down to the 40s but even if I goto drive in in the afternoon in the 60s it still takes awhile.
Does the m235 have a transmission cooler, if so what is the bypass valve part number? Could that be stuck open?
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| 02-16-2019, 09:35 PM | #4 |
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do you know the target range? Maybe that is normal, I have no clue...
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| 02-16-2019, 09:41 PM | #5 |
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cars is warm, to operating temp within 5 mins of driving.
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| 02-20-2019, 12:56 AM | #6 |
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Really Twisted
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Anyone know if there is some sort of bypass or thermal valve that controls the flow of transmission oil to the cooler?
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| 02-20-2019, 11:50 AM | #7 |
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Major General
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Yes, there is a cooler and thermostat.
Are you certain you're not reading the data in Celsius? Because 90C to 110C = 195 F to 230 F which is the ideal automatic transmission fluid operating temp range with todays more robust fluids and temp control systems.
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| 02-20-2019, 06:43 PM | #8 | |
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Really Twisted
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Quote:
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