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02-22-2015, 01:00 AM | #1 |
Drives: 2007 yaris 2014 rav4 Join Date: Sep 2014
Location: British Columbia
Posts: 4
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cold auto trans shifting
When starting off cold the trans won't shift at usual speed, but at very high engine revs. Once warmed up it shifts at usual engine speeds. Any thought?
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02-22-2015, 01:49 AM | #2 |
Drives: 2007 Toyota Yaris Sedan Join Date: Oct 2012
Location: Chilliwack, BC Canada
Posts: 104
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I think this is normal. My 2007 stays in second gear for 2 or 3 blocks then in 3 for about 1/2 km. I think it is to do with warming up the engine quickly to reduce emissions.
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02-22-2015, 07:05 AM | #3 |
Drives: 2010 Yaris Sedan Join Date: Feb 2010
Location: Kansas
Posts: 871
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they are designed to not go into OD until about 20 seconds after cool light goes out. Its an effort to get the engine into normal operating temp.
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02-22-2015, 09:38 AM | #4 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Do a search on here for "4th gear prohibition" and you will see that it is an intended mode of operation (which can be bypassed). When it is allowed is determined by the temp of both the coolant and the AT Fluid.
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02-22-2015, 07:58 PM | #5 |
Drives: 2007 yaris 2014 rav4 Join Date: Sep 2014
Location: British Columbia
Posts: 4
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Thanks guys. Love this little car
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02-23-2015, 07:45 PM | #6 |
Drives: 2007 Yaris Join Date: Jan 2012
Location: Laval, Canada
Posts: 74
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Car wont shift to 3rd gear below 42c coolant temperature and wont shift to 4th below 55c reading on the scangauge 2 that is also when the cool light turns off 55c they are made loke that
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