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Really weird issue. (PLEASE HELP)

Old Aug 27, 2021 | 08:50 PM
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Default Really weird issue. (PLEASE HELP)

Hey everyone, im having a SUPER weird issue with my sc300. So basically, (while im driving anywhere from 10-100mph) it will just randomly rev up 1000rpms or so and stay there until i either slow down or speed up enough for it to switch gears. It will freak out if im going over 80mph and jump from 3k-4k every few seconds, which obviously scared the living **** out of me. Anyways, I have been experimenting and driving with OD (overdrive) OFF for a week or so now, and it hasnt happened at all. Does anyone know what it might be? I'm getting HORRIBLE gas mileage with OD off and I would like to fix it. Let me know, thanks!

EDIT: Its not the transmission slipping btw, I have already have someone tell me that... Its not upshifting or downshifting, I would probably be able to tell because theres absolutely no lurch or anything like there normally is when my tranny switches gears.
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Old Aug 30, 2021 | 06:45 AM
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Originally Posted by zoot6806
Hey everyone, im having a SUPER weird issue with my sc300. So basically, (while im driving anywhere from 10-100mph) it will just randomly rev up 1000rpms or so and stay there until i either slow down or speed up enough for it to switch gears. It will freak out if im going over 80mph and jump from 3k-4k every few seconds, which obviously scared the living **** out of me. Anyways, I have been experimenting and driving with OD (overdrive) OFF for a week or so now, and it hasnt happened at all. Does anyone know what it might be? I'm getting HORRIBLE gas mileage with OD off and I would like to fix it. Let me know, thanks!

EDIT: Its not the transmission slipping btw, I have already have someone tell me that... Its not upshifting or downshifting, I would probably be able to tell because theres absolutely no lurch or anything like there normally is when my tranny switches gears.
What year is your car?
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Old Aug 30, 2021 | 07:48 AM
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torque converter lock up is failing
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