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deebster

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Posts posted by deebster

    2005 Turbo S wheelspin / judder under hard acceleration

    in 996 TT, 996 TT S, 996 GT2

    Posted

    Hi, I very rarely use the performance in my 2005 Turbo S and have only done about 3,000 miles in it so do not really know what is normal and what isn't when it comes to using the power on offer. However, I opened the throttle fully last week in 6th gear accelerating between 100 and 120 mph and had to back off the throttle due to a judder that was felt from the rear of the car. Even though the conditions were dry I thought that it was wheelspin, but now I'm not so sure because it just doesn't seem right that a car with 4WD should do this. The only other occasion that this is happened is when I accelerated at full throttle in 3rd gear but I was less surprised about that because of the ferocious power delivery that the car has. The car has just had a clutch replacement and this problem was not apparent prior to that because I think that the clutch was slipping ever so slightly and taking the edge off the power delivery.

    Does anybody have any idea whether this is 'normal' or if there is likely to be a problem with the car? For information the car will easily hold 1.0 bar boost but I'm sure that I have seen 1.2 bar indicated (may have been a pressure spike).

    Thanks in advance for your suggestions,

    Danny Tattersall.

    Hey Danny.. Interesting that you mentioned what's happening to your car. I have a 997 TT with upgraded HP to above 630 hp. It was running fine.. so spinning of wheels on hard acceleration on any gear. just 2 days ago I've noticed that when I accelerate (all gears) the engine just revvs up to 7,000... even when I change gears I feel like I have no traction....

    I could not figure out if this is a result of spinning wheels or is it just the engine is disconnecting from the drive train (the power is not being transferred to the wheels)?? I am still surprised at all this..

    I have a clutch Master Stage III Kevlar clutch installed but it was running fine and broken in very nicely...

    This may sound stupid but I have noticed this after I got the car washed.. I even got some screching sound that belts make when they are wet.. some say that is normal after heavy rain or too thourough of a wash... is it a coincidence... I'm taking to the dealer tomorrow to see what they think.. will keep you posted..

    However, it could be belt slippage or clutch slippage... ( i'm guessing)

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