LAGinz

I seem to be getting a hesitation at around 2000 rpm when taking off from first gear in manual. Any idea what that might be?

Just in time

Cold engine or warm?

LAGinz

Cold or warm. If I ease into it, not so noticeable. Most noticeable when I try to get on it early, with sport exhaust button pushed. For some odd reason, it seems less noticeable when PDK Sport button pushed. I always drive in manual.

Just in time

Mine seems to subtly stumble when cold but not when warm.

hfm

Mine feels like a manual transmission. If I'm easy on the gas, it takes a bit to engage, like the clutch is being released to shift into first from neutral. If I'm on the gas hard, there is no hesitation whatsoever.

If you're at 2k rpm, that's low RPM, you're easy on the gas, the first scenario described. I'd only worry if you're on the gas and she's hesitating.

LAGinz

Don't quite understand what you're saying hfm. If I'm idling at a light, it's idling at 800 or 900 rpm. If I then floor it in first, it still has to pass through 2000 rpm, and that's where I'm betting the slight bogging.

nycjwi

i would have it looked at. Something is not right

Mike in CA

LA, I have to say that my engine doesn't have any hesitation in manual mode (just about the only way I drive the car) or any other mode. As everyone who has driven the car knows, feathering of the throttle is required when starting slowly from rest just as Dan mentions, but it sounds like you're talking about something else. You might want to get your car checked out.

sunnyr

Is this what you experience?


I have only experienced it in 997.2 PDK, but many have experienced it on 991 (not gt3 though). You probably want to google "pdk hesitation". There are many threads on it.

LAGinz

I get the concept of feathering the throttle in first, but does it have to be feathered all the way up to 2000 rpm? The above you tube video looks kind of like what I have.

mrsullivan

there have been posts about this, and it happened to me once... basically, you are in 1st gear, from a stop (only happens under this circumstance), you give gas, and its like you aren't in gear yet... then at some point in 1st, or if you shift to 2nd, it "catches" and works...

If what I just described is what happened, there have been some writings about it, and best I can tell it boils down to the pdk-s being a true manual and not engaging the gear properly, need more feathering throttle, etc. Other than that one time, it has not happened since to me.

Is it intermittent or every time?

LAGinz

Well maybe it is then just not enough feathering. Only happens on quickish take-offs in first if I try to get some velocity on the throttle. Its like the rpm gets stuck for a second at around 2000 rpm and then resumes its upward climb. Maybe I just have to get used to it. Its obviously easier feathering a true manual with clutch pedal because you can mechanically feel the engagement. Here perhaps I just have to experientially get comfortable with it.

Mike in CA

It's hard for me to tell exactly from the vid, but if I'm understanding it correctly it seems like the problem that guy is having is occurring when coming off idle; a delay between application of the throttle and engine response.

The impression I got from your initial post is that you get off the line ok under light throttle but then at 2000 you have a flat spot or hesitation. Is that right?

To answer your question, no you shouldn't have to feather the throttle all the way to 2000 rpm, and I haven't yet experienced either what mrsullivan mentioned above or the problem you're having.

hfm

That sounds wrong if you're accelerating from 800-900 and have it bog down when you reach 2k. I thought you're talking about slow take off from idle like a manual that's feathered in first gear where the clutch slips until it's engaged. I'd have it checked out. Or compare to another GT3 or, have a GT3 owner try yours to see if he notices a difference.

chrisday24

I have the same issue. Just started the last two weeks. Cold or warm. Today, I pulled out in traffic in first car almost feels like it goes into guardian mode - hesitates then I can switch gear and get going or just wait - 3+ secs it happened today then kicked in. I was in manual mode. The only way I drive

Taking it to shop tomorrow. Anyone with 2015 gt3 had this come up and fixed yet? crappy timing as I'm trading it for my RS jan 1! Or maybe good, they can fix it.