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MCH Engineer in training
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532 Posts
Discussion Starter #1
To put it simply, if the transmission is cold, it has a lot of problems shifting into gears. The colder it is the longer it takes to shift, my RPM's could hit 4000RPM before it finally shifts which tells me its a hydraulic loss somewhere i would guess. WHen it does finally shift it is a smooth one, very smooth because it takes so long to do. This only lasts a few minutes until it warms when the problem pretty much dissapears. But it makes me wonder how much other power i could be losing....any one with ideas on the fix?? is it the bands? the piston? the seals? HELP!
 

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IF your ATF has been changed fairly recently and your level is normal when warm, then I would suggest that this is normal. My Camry and my Lexus both exhibit slow shifting when extremely cold. The Lexus won't upshift to the overdrive until the engine temp has come off of the peg. The Toyota is a little more harsh in its shifting probably because it sits outside and is thoroughly cold soaked.
 

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When the transmission is cold, it will delay shifting to avoid lugging the engine. If it operates normally when it's had a few minutes to warm up, then all should be well.
 

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MCH Engineer in training
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532 Posts
Discussion Starter #4
well it never used to do that, in its younger years. I also will exhibit these exact syptoms when the ATF is low. I added extra though for the cold weather but its a continuing problem it seems. I figured with its age and such maybe key seals were deterorating or something
 
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