Question about a certain Noise
Thread Starter
8th Gear
Joined: Nov 2022
Posts: 8
Likes: 8
Question about a certain Noise
My Z51 is a beast…and I love it! But, I hear and can feel a very slight “puff” sound and feel a very slight hesitation when the car is going through slow speeds especially in the morning driving out of my neighborhood. It occurs during gear changes. Anyone else having this concern?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
Drifting
Joined: Aug 2022
Posts: 1,905
Likes: 791
From: Stamford, CT
Yes, I have a noise, hesitation and shudder through drivetrain
My Z51 is a beast…and I love it! But, I hear and can feel a very slight “puff” sound and feel a very slight hesitation when the car is going through slow speeds especially in the morning driving out of my neighborhood. It occurs during gear changes. Anyone else having this concern?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
Administrator
Joined: Jun 2007
Posts: 66,409
Likes: 2,061
From: Bel Air (by way of Fort Worth, TX) Maryland
St. Jude Donor '12 thru '21
My Z51 is a beast…and I love it! But, I hear and can feel a very slight “puff” sound and feel a very slight hesitation when the car is going through slow speeds especially in the morning driving out of my neighborhood. It occurs during gear changes. Anyone else having this concern?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
As to the "slight hesitation when the car is going through (at) slow speeds," that is the nature of the DCT and is not indicative of a problem. DCTs have to be driven a bit differently from automatics with a torque converter. DCTs tend to exhibit a lurching drivability character when driven at low speeds in parking lots or coming out of your neighborhood, especially when starting out in first or reverse. They don’t creep as smoothly as automatics in such situations because a clutch is being let out. Since you're not letting it out yourself, the pause is more noticeable and, sometimes, annoying.
It is just something you have to get used to, and you should try not to "idle creep" as much as you would in a car with a traditional automatic transmission. When at a stop sign or a stop light, you should come to a complete stop and only move when you can move enough to get to the next gear. It takes a little getting used to, but the "jerkiness" of the DCT is minimized if you treat it like you would a manual at lower speeds.
Race Director
Joined: Mar 2007
Posts: 11,445
Likes: 8,609
My Z51 is a beast…and I love it! But, I hear and can feel a very slight “puff” sound and feel a very slight hesitation when the car is going through slow speeds especially in the morning driving out of my neighborhood. It occurs during gear changes. Anyone else having this concern?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
The dealership service department says it’s part of Active Fuel Management. Anyone agree with this?
