Hesitation around 3000-3500 RPM

[imolas54]

i have an 01 turbo with about 9000 miles on it now, when i am cruising on the highway with my RPM floating around 3000 rpm or 3400 rpm with maybe 10-20% throttle the car would misfire/hesitate..

However it does not have any signs of this hesitation when i am on the throttle and just revving the gear out.

Any idea what this might be?

TIA

[Loren]

Any OBD II fault codes or pending codes?

I would inspect the coil packs too.

[wross996TT]

if you have no codes....this could just be the variocam...if you are not used to it the symptoms are much as you describe.

Edited August 28, 2008 by wross996TT

[Chuck Jones]

Doesn't variocam kick in at 3200? That's dead in the middle of the rpm range he's talking about...and the fact he doesn't feel the hesitation if he's on it hard would also tend to make one think of the variocam. That's right where I can feel mine sometimes.

[Dus10R]

i have an 01 turbo with about 9000 miles on it now, when i am cruising on the highway with my RPM floating around 3000 rpm or 3400 rpm with maybe 10-20% throttle the car would misfire/hesitate..

However it does not have any signs of this hesitation when i am on the throttle and just revving the gear out.

Any idea what this might be?

TIA

How bad is it? Is it a bad "loose power" hesitation or is it a quick hic-up type? You could be right there at the rpm range where the wastegate is opening and closing which will cause a very slight stutter.

[imolas54]

Okay updates:

I changed the spark plug (OEM Porsche Units)

I purchased a code reader (durametric)

No codes and with new plugs it still does the same thing, I am narrowing it down to around 3000 rpm and 3500 rpm those two point the car will loose power that it feels like I took my foot off the gas completely.

[wowgogs]

Okay updates:

I changed the spark plug (OEM Porsche Units)

I purchased a code reader (durametric)

No codes and with new plugs it still does the same thing, I am narrowing it down to around 3000 rpm and 3500 rpm those two point the car will loose power that it feels like I took my foot off the gas completely.

I have a 2002 911 turbo I had the EXACT same thing at 4000 RPM.

I had the sparkplugs changed and a tune up and its as good as gold now. To bad that didn't fix yours :(

[wross996TT]

Okay updates:

I changed the spark plug (OEM Porsche Units)

I purchased a code reader (durametric)

No codes and with new plugs it still does the same thing, I am narrowing it down to around 3000 rpm and 3500 rpm those two point the car will loose power that it feels like I took my foot off the gas completely.

did you look at the coil packs?

[imolas54]

from looking at it, there was no cracks or any noticeable damage....

[rprieto]

I assume you fixed the problem. What was the fix?