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Throttle sticking?
Posted: Tue Feb 05, 2019 4:43 pm
by bogdac
First post guys,so please be kind

i have a TSI 95 se. which I took possession of in June. My problem is this, the car drives fine in almost every respect except that sometimes(mainly at low speed) when I take my foot off the throttle pedal the car actually accelerates slightly instead of slowing down. Can you tell me if this is a known problem or whether i am at fault in any way?
Re: Throttle sticking?
Posted: Tue Feb 05, 2019 4:44 pm
by Adam_013
bogdac wrote:First post guys,so please be kind

i have a TSI 95 se. which I took possession of in June. My problem is this, the car drives fine in almost every respect except that sometimes(mainly at low speed) when I take my foot off the throttle pedal the car actually accelerates slightly instead of slowing down. Can you tell me if this is a known problem or whether i am at fault in any way?
Depends on RPM, the car will always try to be at or just above idle. So if your at 1000rpm in 2nd it won't slow down any more.
Otherwise I'd say there is a fault
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Re: Throttle sticking?
Posted: Tue Feb 05, 2019 4:53 pm
by Andy Beats
Agree with Adam.
Assuming you're not expecting the car to go lower than 1000rpm in a gear, it's a problem.
A Mazda 2 diesel I owned had a similar problem, in that when you lifted your foot of the throttle it 'ran on' at the same speed for a second or two.
Didn't accelerate, just didn't slow down either.
Very disconcerting and annoying, the garage acknowledged it wasn't right but, as there wasn't a fault code logging in the computer, they couldn't/wouldn't fix it.

Re: Throttle sticking?
Posted: Tue Feb 05, 2019 5:02 pm
by bogdac
Many thanks for confirming my fears. I'll give the dealer a call in the morning.
Re: Throttle sticking?
Posted: Tue Feb 05, 2019 5:04 pm
by silverhairs
Have you given any thought that it could be the throttle sensor??
Re: Throttle sticking?
Posted: Tue Feb 05, 2019 5:07 pm
by bogdac
without wishing to sound ignorant, how do I check that?
Re: Throttle sticking?
Posted: Wed Feb 06, 2019 8:43 am
by Andy Beats
bogdac wrote: Tue Feb 05, 2019 5:07 pm
without wishing to sound ignorant, how do I check that?
You can't, you'll need the dealer to check for a fault code.
Re: Throttle sticking?
Posted: Wed Feb 06, 2019 11:04 am
by bogdac
OK thanks.
Re: Throttle sticking?
Posted: Wed Feb 06, 2019 11:06 am
by Andy Beats
bogdac wrote: Wed Feb 06, 2019 11:04 amOK thanks.
If no fault code, ask for a test drive with a mechanic.
Hopefully he can replicate the issue and it's not your driving (no offence).
Re: Throttle sticking?
Posted: Wed Feb 06, 2019 11:13 am
by bogdac
Andy Beats wrote: Wed Feb 06, 2019 11:06 am
bogdac wrote: Wed Feb 06, 2019 11:04 amOK thanks.
If no fault code, ask for a test drive with a mechanic.
Hopefully he can replicate the issue and it's not your driving (no offence).
None taken

Re: Throttle sticking?
Posted: Wed Feb 06, 2019 11:31 pm
by Leif
Mine will actually speed up to a constant cruising speed in fourth or fifth, on a flat, I’ve assumed the ECU likes to prevent stalling or labouring the engine. S’not a problem IMO.
Re: Throttle sticking?
Posted: Thu Feb 07, 2019 8:49 am
by Andy Beats
Leif wrote: Wed Feb 06, 2019 11:31 pm
Mine will actually speed up to a constant cruising speed in fourth or fifth, on a flat, I’ve assumed the ECU likes to prevent stalling or labouring the engine. S’not a problem IMO.
If the ECU is taking over, you evidently are in too high a gear.....

Re: Throttle sticking?
Posted: Thu Feb 07, 2019 9:14 am
by Adam_013
Andy Beats wrote:Leif wrote: Wed Feb 06, 2019 11:31 pm
Mine will actually speed up to a constant cruising speed in fourth or fifth, on a flat, I’ve assumed the ECU likes to prevent stalling or labouring the engine. S’not a problem IMO.
If the ECU is taking over, you evidently are in too high a gear.....

It'll so 30 in 5th... Just, I do just because it saves having to press the accelerator. The 'drive blue' guide says to as well[emoji106]
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Re: Throttle sticking?
Posted: Thu Feb 07, 2019 9:18 am
by Andy Beats
Adam_013 wrote: Thu Feb 07, 2019 9:14 am
It'll so 30 in 5th... Just, I do just because it saves having to press the accelerator. The 'drive blue' guide says to as well[emoji106]
I see you're in East Anglia, which I think is very flat?
I wouldn't get away with leaving my car in 5th at 30mph for very long here, even a gentle gradient would have the engine bouncing off its mountings.
Re: Throttle sticking?
Posted: Thu Feb 07, 2019 9:21 am
by Adam_013
Andy Beats wrote:Adam_013 wrote: Thu Feb 07, 2019 9:14 am
It'll so 30 in 5th... Just, I do just because it saves having to press the accelerator. The 'drive blue' guide says to as well[emoji106]
I see you're in East Anglia, which I think is very flat?
I wouldn't get away with leaving my car in 5th at 30mph for very long here, even a gentle gradient would have the engine bouncing off its mountings.
A fair enough, in all honesty it doesn't exactly like it, but will do it. The smallest incline will soon unsettle it mind.
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