1.8 FR throttle

Jan 31, 2025
2
0
Hi, first post, new owner here, I have a new to me 2015 FR ST 1.8TSI , 1 owner, 180KMs . for me its been an odd step from a long term mk5 GTI DSG back to a manual car again. Anyways I have an odd feeing the throttle is unusually jerky. I feel that lifting off the throttle while moving there is a bit of an abrupt switch to the power cutting out after 0.5-1 seconds later. and the same while engaging the throttle. it a little jerky between power on off. I get a bit car sick over thinking about it. Also in stop start traffic it hard to creep smoothly at v low speeds and I have to feather the clutch a bit too to avoid kangarooing's. I have other manual cars long term so this is not a critic of my driving style or ability to drive !!

Can anyone relate to this accelerator feel ?
Great Forums BTW
 

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serdar_18fr

Active Member
May 29, 2021
663
1
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Hi, first post, new owner here, I have a new to me 2015 FR ST 1.8TSI , 1 owner, 180KMs . for me its been an odd step from a long term mk5 GTI DSG back to a manual car again. Anyways I have an odd feeing the throttle is unusually jerky. I feel that lifting off the throttle while moving there is a bit of an abrupt switch to the power cutting out after 0.5-1 seconds later. and the same while engaging the throttle. it a little jerky between power on off. I get a bit car sick over thinking about it. Also in stop start traffic it hard to creep smoothly at v low speeds and I have to feather the clutch a bit too to avoid kangarooing's. I have other manual cars long term so this is not a critic of my driving style or ability to drive !!

Can anyone relate to this accelerator feel ?
Great Forums BTW

There are some tweaks on throttle response that can be done through a diagnostics device like OBD11 or VCDS. Those changes can lead to better responses for some driving modes but worse driveability for others. Maybe one of the previous owners had done something like that. Search for so-called "Audi mode throttle response" and also "driving profile switchover", this could be related too.
 
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Jan 31, 2025
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I'l have a play with the different driver profiles and see if there is a difference, only one previous owner who didn't seem like the type that would be messing with VCDS but who knows.
 

Mr Pig

Active Member
Jun 17, 2015
2,930
1,102
We've had four Mk3 Leons and never had an issue like you describe. I think you have a fault.
 
Dec 16, 2023
4
2
South East
I had a similar concern when I first got my 1.8 tsi MT and I was convinced there was something wrong with it - I never had any trouble with previous cars in 30 years of driving and It seemed ridiculously frustrating. I never thought to test its traffic jam manners in the test drive.

However, I’ve got used to it now and no longer have this issue. Being slightly more progressive with throttle helps, and avoid driving just above idle speed in slow speed traffic. I.e let it crawl happily at idle, or give it a smooth confident surge of throttle and smoothly ease off, or get it into 2nd asap.
 

Mr Pig

Active Member
Jun 17, 2015
2,930
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I'm wondering, could this be the clutch? The 2.0 petrol VW cars sometimes have a restrictor in the clutch line which causes horrible clutch action. Much better once it's removed. Could it be something like that do you think?
 
Dec 16, 2023
4
2
South East
I'm wondering, could this be the clutch? The 2.0 petrol VW cars sometimes have a restrictor in the clutch line which causes horrible clutch action. Much better once it's removed. Could it be something like that do you think?
The throttle jerkiness was happening with clutch fully engaged, so for me the clutch was another matter. With practice I have now ironed out the jerkiness.

The Clutch delay valve / CDV is a huge irritation and makes smooth gear changes hard. It also gets in the way of control - eg reverse parallel parking on steep hills onto a kerb, or edging into passing places on hilly lanes. A couple of days ago I removed the CDV and I’m amazed at the results!
 
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Mr Pig

Active Member
Jun 17, 2015
2,930
1,102
The Clutch delay valve / CDV is a huge irritation and makes smooth gear changes hard. It also gets in the way of control - eg reverse parallel parking on steep hills onto a kerb, or edging into passing places on hilly lanes. A couple of days ago I removed the CDV and I’m amazed at the results!
Yeah, it's terrible. You just have to read the posts on here talking about 'launching' cars to understand why VW did it. The valve makes it harder for the moronic to break their transmissions. If you know how to drive and have a bit of mechanical sympathy the CDV is horrible but my guess is that if you're the kind of person the valve was designed for you're possibly too blunt to even realize it's there.
 
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