Rev's go up when shifting? Off the gas and clutch=strange
#1
12-20-2008, 09:24 AM
Join Date: Dec 2008
Location: down south
Posts: 550
Rep Power: 39 
Rev's go up when shifting? Off the gas and clutch=strange
So I've had my 996tt for about a week and a half now. It's in excellent shape and runs good. Doesn't need anything except for me to learn about it's little quirks.
Sometimes when shifting fast and at full throttle, when I push in the clutch and let off the gas at the same time to go in the next gear, the rpm's will go up a little instead of falling down like a normal throttle body car...is this normal for drive by wire?
I'm thinking that since it's drive by wire and I'm off the throttle, there must be a little delay and the computer is still giving it some gas. Might be off on the gas pedal/throttle body calibration?
I know for my AEM Supra I use to have, if i didn't set the correct TPS range for closed and full throttle it might do something similar to this.
Sometimes when shifting fast and at full throttle, when I push in the clutch and let off the gas at the same time to go in the next gear, the rpm's will go up a little instead of falling down like a normal throttle body car...is this normal for drive by wire?
I'm thinking that since it's drive by wire and I'm off the throttle, there must be a little delay and the computer is still giving it some gas. Might be off on the gas pedal/throttle body calibration?
I know for my AEM Supra I use to have, if i didn't set the correct TPS range for closed and full throttle it might do something similar to this.
#2
12-20-2008, 09:50 AM
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Join Date: Dec 2006
Location: Phoenix, Arizona
Age: 48
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I had this same experience when I first got my car. I believe you are just not getting off the gas quick enough. I started trying to get of the gas a little earlier when shifting, and now its automatic, and I no longer see the small little rpm "blip." That was my experience anyway. Good luck.
#4
12-20-2008, 03:43 PM
Basic Sponsor
clutch slipping for sure...
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2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
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2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
#5
12-20-2008, 11:28 PM
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Join Date: Oct 2007
Location: Elk Grove, CA
Age: 83
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I have the same thing going on...doesn't happen all the time, and I've had two instances where I could actually smell the clutch after an rpm spin-up when shifting into 5th or 6th...but it's a sure sign of time to start shopping for a clutch...perhaps the wife can be talked into a great Christmas present? I recently bought the UMW flash...and even for those who might drive relatively conservatively.....Kevin usually warns his customers about the next "gotta' have" will be a clutch.
#6
12-21-2008, 02:28 AM
Join Date: Dec 2008
Location: down south
Posts: 550
Rep Power: 39
How could it be a clutch if I'm pressing in on the clutch all the way? At this point the clutch disk isn't engaged, and I'm off the gas. I'm just not sure why the rev's don't fall very quick between gear changes.
If I were to press the clutch in,shift into the next gear, let off the clutch and give it gas with my foot on the pedal and the rpms remain high before falling then that would be a definite slip.
If I were to press the clutch in,shift into the next gear, let off the clutch and give it gas with my foot on the pedal and the rpms remain high before falling then that would be a definite slip.
#7
12-21-2008, 12:03 PM
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Join Date: Oct 2007
Location: Elk Grove, CA
Age: 83
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