#1: Brakes randomly applying Author: Phil_G, Location: Leamington SpaPosted: Wed Jan 26, 2011 6:16 am ---- I was wondering if anyone with 206 experience can help me with this one.
My 1.4 is driving really nicely (after fitting some new injectors) but once every 10 or so miles it feels like the brakes are randomly engaging for a fraction of a second. It usually happens in bursts of 2-4. Revs remain constant but speed drops.
My garage has taken it for an "extensive" test drive and not experienced it. I did have new brakes fitted before Christmas.
Is there anything I can check?
cheers
-- Phil
#2: Re: Brakes randomly applying Author: Lee, Location: EnglandPosted: Wed Jan 26, 2011 6:20 am ---- Is the engine management light on?
It could be the throttle position sensor at fault.
#3: Re: Brakes randomly applying Author: Phil_G, Location: Leamington SpaPosted: Wed Jan 26, 2011 6:23 am ---- No lights came on. At least not that I remember. I will pay attention to the dash next time it happens.
If it is the TPS, what should I be looking for, just the light flashing while the brakes engage?
fingers crossed it is that, a £20 quid fix would be ideal.
Cheers
-- Phil
#4: Re: Brakes randomly applying Author: elcamino, Location: home!Posted: Wed Jan 26, 2011 6:24 am ---- You sure brakes are applying?it could be a momentarily fuel cut off.
#5: Re: Brakes randomly applying Author: Phil_G, Location: Leamington SpaPosted: Wed Jan 26, 2011 6:29 am ---- No, not sure. It feels like the brakes, but I am not very good at judging these things.
Revs remain constant (~2.8K last time I experienced it). This is what made me assume it wasn't engine related. Of course, now I think about it, the "blips" wer so short that the momentum would probably keep the revs going.
If it is a fuel cut off, any thoughts on what I should do next?
#6: Re: Brakes randomly applying Author: Antknee, Location: ManchesterPosted: Wed Jan 26, 2011 6:31 am ---- Easy answer, you have a ghost in the car
#7: Re: Brakes randomly applying Author: MrrNoName, Location: UKPosted: Wed Jan 26, 2011 6:32 am ----
elcamino wrote:
You sure brakes are applying?it could be a momentarily fuel cut off.
most likely its not the brakes applying theselves but a problem with the engine holding its revs
you say speed drops but the revs stay the same. this is not possible. (unless your clutch is slipping)
most likely the engine "blips", its revs drop (just not enough to notice) and speed drops. so it feels like someone is tapping the breaks briefly
as said i would look at the fuel and TPS side of things
#8: Re: Brakes randomly applying Author: elcamino, Location: home!Posted: Wed Jan 26, 2011 6:38 am ----
Phil_G wrote:
No, not sure. It feels like the brakes, but I am not very good at judging these things.
Revs remain constant (~2.8K last time I experienced it). This is what made me assume it wasn't engine related. Of course, now I think about it, the "blips" wer so short that the momentum would probably keep the revs going.
If it is a fuel cut off, any thoughts on what I should do next?
Could be anything from dirty fuel filter to TPS. or injectors..
#9: Re: Brakes randomly applying Author: Phil_G, Location: Leamington SpaPosted: Wed Jan 26, 2011 6:39 am ---- Is there an easy way to test the TPS, or should I just fit a new one and see if the problem goes away?
The deceleration caused is much greater than you get when you just dip the clutch. Does this eliminate the clutch slipping?
@Antknee, I so hope you are right. One splash of holy water and the car will be good as new
Thanks for all the advice!
-- Phil
#10: Re: Brakes randomly applying Author: Lee, Location: EnglandPosted: Wed Jan 26, 2011 6:40 am ---- Get it code read
#11: Re: Brakes randomly applying Author: Phil_G, Location: Leamington SpaPosted: Wed Jan 26, 2011 6:46 am ---- I completely forgot about that, thanks. Google shows an OBD port just below the steering column. I will hook my BT reader up tonight and see what it says.
Thanks again!
-- Phil
#12: Re: Brakes randomly applying Author: Coolspot, Location: East SussexPosted: Wed Jan 26, 2011 6:49 am ---- I have this on my 406 coupe.
Its from the engine but some other people from that forum have this too. Unfortunately no one has found an answer to the problem after having lots of things changed.
But the revs do drop and so does the speed at around 2500rpm.
Sorry i could not have been anymore helpful
#13: Re: Brakes randomly applying Author: Phil_G, Location: Leamington SpaPosted: Wed Jan 26, 2011 6:55 am ---- Fingers crossed its the same symptoms to a different issue. I would expect the engines to be pretty different mechanically.
At least I hope so...
#14: Re: Brakes randomly applying Author: MrrNoName, Location: UKPosted: Wed Jan 26, 2011 6:56 am ----
Phil_G wrote:
Is there an easy way to test the TPS, or should I just fit a new one and see if the problem goes away?
The deceleration caused is much greater than you get when you just dip the clutch. Does this eliminate the clutch slipping?
-- Phil
its not the clutch slipping, just saying that if the revs didnt drop that would be it.
the "brakeing" feels more then when you dip the clutch because the engine is dragging the car. the cars not freely glideing (when your coasting)
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