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I'm puzzled.......


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Hi all,

This is the mistery :

About a year ago I bought a 2005 C4S from a friend. The car was in excellent condition,13.5K miles,serviced at regular intervals,etc. I now have about 20K miles and other than a leaking RMS, now fixed, I've had no problems.

The car runs well,idles quietly and smoothly but it was sort of uninspiring under acceleration. I've done many Italian tune-ups, put injector cleaner in the tank, even used a tankful or two of 104 oct with only temporary improvement and then back to a sort of linear acceleration going thru the gears.Not much fun at all !!

Everything changed yest. When I got in the car after work, I accelerated as always but the car leapt forward and kept revving and picking up speed as if I had another 75HP, the way I always expected it to be !!! Today it has been a pleasure to drive it, stab the throttle and instantly feel the rush of speed.

Any theories to explain the sudden change?

911fan

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It reminds me of the MAF sensor problem that i had in my toyotas. Sometimes it would throw a code and sometimes it wouldn't.

Those things are a pain when they start to go. Once i replaced mine, it was fine. I always try the least expensive things first. Clean the MAF sensor and make sure you don't use an oiled filter.

Hi all,

This is the mistery :

About a year ago I bought a 2005 C4S from a friend. The car was in excellent condition,13.5K miles,serviced at regular intervals,etc. I now have about 20K miles and other than a leaking RMS, now fixed, I've had no problems.

The car runs well,idles quietly and smoothly but it was sort of uninspiring under acceleration. I've done many Italian tune-ups, put injector cleaner in the tank, even used a tankful or two of 104 oct with only temporary improvement and then back to a sort of linear acceleration going thru the gears.Not much fun at all !!

Everything changed yest. When I got in the car after work, I accelerated as always but the car leapt forward and kept revving and picking up speed as if I had another 75HP, the way I always expected it to be !!! Today it has been a pleasure to drive it, stab the throttle and instantly feel the rush of speed.

Any theories to explain the sudden change?

911fan

Edited by dallison
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Hi dallison,

Thank you for the reply. I hadn't thought of that possibility. The car is running great right now so I won't mess with it but I'll keep this suggestion in mind

911fan

It reminds me of the MAF sensor problem that i had in my toyotas. Sometimes it would throw a code and sometimes it wouldn't.

Those things are a pain when they start to go. Once i replaced mine, it was fine. I always try the least expensive things first. Clean the MAF sensor and make sure you don't use an oiled filter.

Hi all,

This is the mistery :

About a year ago I bought a 2005 C4S from a friend. The car was in excellent condition,13.5K miles,serviced at regular intervals,etc. I now have about 20K miles and other than a leaking RMS, now fixed, I've had no problems.

The car runs well,idles quietly and smoothly but it was sort of uninspiring under acceleration. I've done many Italian tune-ups, put injector cleaner in the tank, even used a tankful or two of 104 oct with only temporary improvement and then back to a sort of linear acceleration going thru the gears.Not much fun at all !!

Everything changed yest. When I got in the car after work, I accelerated as always but the car leapt forward and kept revving and picking up speed as if I had another 75HP, the way I always expected it to be !!! Today it has been a pleasure to drive it, stab the throttle and instantly feel the rush of speed.

Any theories to explain the sudden change?

911fan

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Hi 70Sixter,

Thanks for the welcome. I've been lurking on/off for about a year and learning about 996s. My previous Porsche experience is with a 911SC, now with a 3.6 conversion,gears,etc

Lots to learn about these water cooled cars!

911fan

:welcome: :welcome: 911Fan
Edited by 911fan
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