C4 VTR 2013 Brake Issue
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C4 VTR 2013 Brake Issue
Scary situation. Brakes are very good around town, now I've got used to Citroen's short pedal travel and sharp braking BUT ( it's a big but!) at the end of a run say at 50mph for a while, the pedal goes down a lot more and the brakes feel like there is nothing happening, then suddenly they come on very sharply, almost like a crash stop. I've got an idea it might be caused by a vacuum leak, but can anybody help please? It is making the car very scary to drive, since it's impossible to judge braking distances.
Last edited by GiveMeABreak on 04 Mar 2024, 13:12, edited 1 time in total.
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Re: C4 VTR 2013 Brake Issue
I’m with you on the pedals. And I’ve considered getting shoes specifically for driving.
CITROEN C4 1.2 PURETECH C-SERIES EDITION S/S 5DR (2023)
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Re: C4 VTR 2013 Brake Issue
Get it diagnosed properly to see if there are any fault codes coming back, but vacuum is a possibility as well as it not having been bled properly (needs to be done on both circuits and with a diagnostic tool for the ESP system).
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Marc
Marc
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1964 Renault 4 ( Murdered in a hilly carpark by a runaway Cortina!)
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1972 Citroen SM...in my dreams only!! - x 3
Re: C4 VTR 2013 Brake Issue
Diagnostics... I've got a basic U480 fault scanner and it's come up with P1337 and P2074 and also potential P2074. Could these be related to the brake problem? There's no warning lights coming on.
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Re: C4 VTR 2013 Brake Issue
I've split this off from the Introductions thread into the Citroen Technical Thread.
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Re: C4 VTR 2013 Brake Issue
Let me have the VIN and I'll take a look at those codes as they relate to your specific vehicle. Please post your VIN in full without spaces - it will be automatically masked from public view after submitting your post & will only be visible to staff.
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Marc
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1962 Renault 4
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Re: C4 VTR 2013 Brake Issue
VIN NO. VF7**************[VIN obfuscated, can be read by forum staff]
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Re: C4 VTR 2013 Brake Issue
You listed two of the same fault codes, but here are the descriptors:
Fault Code: | P1337 |
Description of Fault: | Combustion misfiring (impact on catalytic converter): Injector cylinder no.1. Ignition misfirings on cylinder 1 that could damage the catalytic converter. Conditions of activation of the diagnostics The following conditions have to be met: - Engine management ECU in main triggering phase - Engine speed above 500 rpm and below a threshold defined in the engine ECU - Torque below a threshold defined in the ECU - The crankshaft and the camshaft are synchronised |
Conditions for Fault to clear: |
|
Downgrade Modes whilst Fault is active: |
|
Symptoms: |
|
Suspect Areas: |
|
Fault Code: | P2074 |
Description of Fault: | Inlet pressure regulation: Pressure too high. Inlet manifold vacuum regulation diagnostics. Conditions of activation of the diagnostics: Pressure regulator loop in the inlet manifold at the limit. |
Conditions for Fault to clear: |
|
Downgrade Modes whilst Fault is active: |
|
Symptoms: |
|
Suspect Areas: |
|
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Marc
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1964 Renault 4 ( Murdered in a hilly carpark by a runaway Cortina!)
1962 Renault 4
1972 Citroen SM...in my dreams only!! - x 3
Re: C4 VTR 2013 Brake Issue
And that's exactly what I have done. I had some old Slazenger indoor trainers which I found were good for driving, so I bought today's equivalent from Sports Direct yesterday. Not quite as good, but hopefully they will soften up.
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Re: C4 VTR 2013 Brake Issue
Perhaps a pair of these pinkle wickers gents?
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Marc
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1964 Renault 4 ( Murdered in a hilly carpark by a runaway Cortina!)
1962 Renault 4
1972 Citroen SM...in my dreams only!! - x 3
Re: C4 VTR 2013 Brake Issue
I'm beginning to think I know exactly where to position those on the Salesman I bought the car from!
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Re: C4 VTR 2013 Brake Issue
Off hand, it might be worth checking the handbrake is adjusted properly. if over adjusted handbrakes can stop auto adjusters working which might lead to more pedal travel needed.
We've had a few C4s and I have caught the wrong pedals at times and had forgotten about it until reading this and I only wear size sevens. We changed our last one 4 years ago. They were good comfy cars with good fuel economy, both things better than our current 308 1.5 hdi.
We've had a few C4s and I have caught the wrong pedals at times and had forgotten about it until reading this and I only wear size sevens. We changed our last one 4 years ago. They were good comfy cars with good fuel economy, both things better than our current 308 1.5 hdi.
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1964 Renault 4 ( Murdered in a hilly carpark by a runaway Cortina!)
1962 Renault 4
1972 Citroen SM...in my dreams only!! - x 3
Re: C4 VTR 2013 Brake Issue
Thanks for that advice Paul. The car's going into my local garage to check out the brakes tomorrow, so I'll pass that info on to them. Just come back from car sales yard & workshop, where they have replaced leaking passenger side drive shaft oil seal. Funny they didn't spot that when doing the MOT 2 weeks ago !! (" all cars come with a new 12 months MOT" ). No fails or advisories on MOT though.
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1964 Renault 4 ( Murdered in a hilly carpark by a runaway Cortina!)
1962 Renault 4
1972 Citroen SM...in my dreams only!! - x 3
Re: C4 VTR 2013 Brake Issue
Well, the car is back from the garage. Brakes have been stripped out and checked, sliders greased and brakes bled. Apparently there was a little bit of air in the rears but nothing of importance. I've been out on a test drive and I notice some pedal movement before the brakes come on. Is this normal does anyone know? I'm also told I should have an engine undertray. I see these advertised on ebay at a range of prices. Whilst ebay tells me a number of them will fit my car are there different types for different engines? Mine has the 1.6 VTi 120 petrol engine. Also does the undertray fit directly to the chassis ( for want of a better word) of the car or will I need other bits ( which are probably not there either) to fit it? Of course, the car yard doesn't want to know ( " not all of this model had undertrays sir" ) so thanks for everyone's patience with me on this.
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Re: C4 VTR 2013 Brake Issue
He's correct, it's mostly the diesels that have them fitted. Whether these also fit to the front air deflector I can't be 100%. Please see parts info requests below (and I have your VIN already for this vehicle).
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