Hi All, had a search but can't find exactly what I want. The wife came home tonight saying the 'brakes had gone' on our MK1 Fabia VRS. Turns out it was after going through a massive puddle 'that covered the car' coming home from work in heavy rain. I'm guessing the servo gets its vacuum from the air inlet system and could it have had water ingress? The brakes work but only when applying very heavy pedal pressure, there also seemed to be a smell of burning when she first stopped which has got me perplexed. Thanks for any tips or advice and sorry if I've missed a thread explaining this.

 

Thanks

 

Kerry

@Grimsby Ranger - Good guess.  OK, as for a hopefully quick fix, pull off the lowest air hose from the servo, and see if water drains out. If it does, then I think you'll need to dry the servo completely (and your wife can count herself lucky she's not destroyed the engine).

I'm not sure how possible it is to get water in the brake servo.

 

The tandem pump is what creates the vacuum for the servo on PD engines, this exhausts the air into the top of the engine. If your servo somehow has water in it, it will of been sucked into the tandem pump, possibly damaging it, and then blown water into your oil.

 

Does it start and run ok? (the tandem pump also pumps fuel)

Start by checking the brake servo vacuum pipe for integrity  before diving into the deeper mysteries of phantom electrical burning smells.

Thanks all for your replies, the first chance I'll get to look at it is Thursday morning so think it'll be the hose off and have a look. It was dark when she got home so couldn't see too much. Thanks again and I'll let you know how it goes. The car did start and run ok so the engine is fine. I'll check the oil though as suggested

Edited 13 March, 20188 yr by Grimsby Ranger

Had a look this morning and found the hose from the tandem pump had come off from a kind of 3-way connector, closer inspection of the end of the hose it has a split so needs replacing. I suppose it'll be a main dealer for that part?

 

Thanks

What year is the car?

 

Does it look like item 6 here?

 

If so, probably the last one, 6Q2 612 041 AP?  That number may even be somewhere visible on the pipe.

Edited 15 March, 20188 yr by Wino

It's a 53 plate

Hi Wino, thanks for that. It looks more like item 5 but the NRV has a small pipe coming off it that goes to a box, is that something to do with the ABS system?

Edited 15 March, 20188 yr by Grimsby Ranger
picture added

I've wrapped a bit of tape round it for now (I know not ideal) and just seen from the photo the other side seems to be splitting so that's it off the road until fixed!

Can almost see the part number in that photo, right along the top edge, upside down on the hard pipe. Ending .....12 041 B something? Maybe the first item 5?

The smaller pipe is probably a feed for vacuum powered stuff like turbo and EGR valve diaphragms, not ABS. Is the box on the offside suspension turret?

Yes, the box is on the offside suspension turret and has pipes going to the EGR valve etc. so a vacuum feed as you say. Managed to get a better picture of the part number. Thanks a lot for your help. Looks like it's awkward to get to the end that connects to the servo.

Cool, the suffix A part has been superceded twice, now at 6Q2612041BS.

Correction, three times, now at suffix CD, I think.

Edited 15 March, 20188 yr by Wino

Fantastic, thanks so much for your help

No problem, though see my edit just now about a further superceding.

TPS may well have one on the shelf if your local branch is helpful.

Thanks, I don't think we have a TPS in Grimsby, nearest one is about 30 miles away in Scunthorpe I think.

Dont forget you can go to any seat, VW or audi dealer for skoda parts. Ive had several from both my local Seat dealer and a couple from a near by VW dealer. You just need a part number and they should be able to help. Funnily enough I had the servo pipe split on my 1.4 MPi. First part I bougth from Seat dealer. 

My local independent got me one a few months back. Just shy of £30 as I recall.

Thanks TripleMcB and kevberlin, I know someone who's a sales exec for Audi so I've messaged him, if not I've an independent I use and we have main dealers so should have one soon  

 

1 hour ago, TripleMcB said:

Dont forget you can go to any seat, VW or audi dealer for skoda parts. Ive had several from both my local Seat dealer and a couple from a near by VW dealer. You just need a part number and they should be able to help. Funnily enough I had the servo pipe split on my 1.4 MPi. First part I bougth from Seat dealer. 

 

I'd expect that to only work for common parts, how I know this is, I have a VW Van Centre near me and they used to be very helpful about sourcing parts not used on VW Commercials as long as I could supply the part number, after TPS came on the scene this sort of thing was frowned on and the central parts ordering system would not allow them to request any "other VW Group marque parts" - they could only source them via TPS and that was never going to work for them as TPS would normally never have to deliver any parts to them - so that was the end of that convenient source of any VW, Audi and SEAT parts for me!

Got the pipe, Audi wouldn't supply it so got my lad to get one from TPS in Lincoln. It was the CD suffix, will be fitting it at the weekend. Thanks everyone for all your help. Cost £31.06.

7 minutes ago, Grimsby Ranger said:

Got the pipe, Audi wouldn't supply it so got my lad to get one from TPS in Lincoln. It was the CD suffix, will be fitting it at the weekend. Thanks everyone for all your help. Cost £31.06.

Result. Glad it’s sorted for you. This is a good forum.

A brilliant forum, couldn't have asked for more