Please tell me if this is Normal!!!
#1
Racer
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I have an 07 AWD with 10k and I have been experiencing something kind of strange.
When approaching to a stop or slowdown, before the car stops the tach needle drops to about 600 RPM then bounces back up to about 1100 RMP then it gradually goes down to 550-600 RMP when the car stops completely. Once in a while (at least I felt 3 times and my wife felt many more times), when the car just stops, you will feel it shaking, seems like the car is shutting down and it only happens about 1/10 second. This feels exactly like when you turn off your car and right before it is off, you turn on the key to position II and the car is up running again.
Please tell me if this is normal before I have to take it in.
Thanks fellas.
When approaching to a stop or slowdown, before the car stops the tach needle drops to about 600 RPM then bounces back up to about 1100 RMP then it gradually goes down to 550-600 RMP when the car stops completely. Once in a while (at least I felt 3 times and my wife felt many more times), when the car just stops, you will feel it shaking, seems like the car is shutting down and it only happens about 1/10 second. This feels exactly like when you turn off your car and right before it is off, you turn on the key to position II and the car is up running again.
Please tell me if this is normal before I have to take it in.
Thanks fellas.
#2
Lexus Fanatic
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I have an 07 AWD with 10k and I have been experiencing something kind of strange.
When approaching to a stop or slowdown, before the car stops the tach needle drops to about 600 RPM then bounces back up to about 1100 RMP then it gradually goes down to 550-600 RMP when the car stops completely. Once in a while (at least I felt 3 times and my wife felt many more times), when the car just stops, you will feel it shaking, seems like the car is shutting down and it only happens about 1/10 second. This feels exactly like when you turn off your car and right before it is off, you turn on the key to position II and the car is up running again.
Please tell me if this is normal before I have to take it in.
Thanks fellas.
When approaching to a stop or slowdown, before the car stops the tach needle drops to about 600 RPM then bounces back up to about 1100 RMP then it gradually goes down to 550-600 RMP when the car stops completely. Once in a while (at least I felt 3 times and my wife felt many more times), when the car just stops, you will feel it shaking, seems like the car is shutting down and it only happens about 1/10 second. This feels exactly like when you turn off your car and right before it is off, you turn on the key to position II and the car is up running again.
Please tell me if this is normal before I have to take it in.
Thanks fellas.
#4
Racer
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Thank you all for your replies.
#5
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What you and the original poster are noticing is the car downshifting during normal braking, which seems to be a feature of this transmission.
#6
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this happens to me also. a few times, maybe once or twice a week, when i'm braking and almost to a stop, it feels like the engine is about to die (vibrations and all that), and my car starts to feel like i'm driving on a washboard road. strangely enough, i don't notice my rpm needle dropping below the 600ish mark when this happens.
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#8
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at that point, given the speed i was going, and the fact that i was braking normally and just 1-2 seconds from a complete stop, wouldn't the torque converter already be disengaged? or does it only disengage when the car comes to a complete stop?
#10
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Well, first off, our cars dont have EGR. Lexus hasnt used EGR for years, it uses VVT-i to gain the same effect. It sounds like your car is downshifting normally. My car does the same thing. Are you in ECT mode or not? I seem to notice it a lot more in ECT mode. As far as the car coming close to dying, i would bring it to a dealer and have them inspect for pending codes. There may be something going on in there, and it doesnt necessarily have to set a check engine light.
#11
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Well, first off, our cars dont have EGR. Lexus hasnt used EGR for years, it uses VVT-i to gain the same effect. It sounds like your car is downshifting normally. My car does the same thing. Are you in ECT mode or not? I seem to notice it a lot more in ECT mode. As far as the car coming close to dying, i would bring it to a dealer and have them inspect for pending codes. There may be something going on in there, and it doesnt necessarily have to set a check engine light.
#13
Racer
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this happens to me also. a few times, maybe once or twice a week, when i'm braking and almost to a stop, it feels like the engine is about to die (vibrations and all that), and my car starts to feel like i'm driving on a washboard road. strangely enough, i don't notice my rpm needle dropping below the 600ish mark when this happens.
So I guess it's normal. I know that I'll somewhat get the answers from here. Thank you all.
#14
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I did not see this thread before posting. But I posted a very similar thread under "Erratic tach" subject. I have the exact same symptom as GoHuskers. As I am approaching a traffic light and slowing down, the tach bounce back and forth almost 300-400 rpm. This bouncing happens during downshifting of gear and most notable if the gear downshifts rapidly from 4 to 2 (skipping 3). I have been meaning to do a video clip on it. If I do, I will post it.
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