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quattrokid

40'000 mile service done today

Eventually reached the big 4-0 '000 miles so in it went for its service and the haldex oil & filter changed










It also had the grill badge I kept from the last S3 we had fitted today as well

Happy days
Teri

She looks fantastic
quattrokid

Thanks Teri

Teri

anyway.....only 40,000 miles. My baby had racked up 130,000!!!!
quattrokid

Your still about 108'000 miles behind my UrS4  
Moonwalker

That's the colour to have it in, one overtook me once in Imola. My jaw dropped, that and a B5 RS 4 in yellow look superb.
colicabcadam

saw your other thread on asn in regards to the abs kicking in

most likley a knackered abs ring or sensor !!

you can use vagcom to look at wheel speeds, so a passenger would help here, or simply log away
quattrokid

Watch this space Amar.... your wish will be granted this weekend    I'm meeting up with Imol4vant RS4

Colin, there isn't any fault codes and all abs sensors are spot on.

Perhaps it's the steering angle thingy

Seem yo recall having it changed on the noggy S3 we used to have, not sure if that throws a code or not, I'll speak with the techy chappy tmw ...
colicabcadam

that was my second point of call

you can recalibrate with vagcom - so easy enough to fix !
quattrokid

Excellent  thanks.  
quattrokid

Heads up, it did it for the techy chappy as well, I mentioned the steering angle thingy but that would bring a code up if it wasn't correct,everything mechanical & electronic is fine. Track rod end was replaced so a wheel alignment may get done, see if the symptom persists after its fluid change. Car feels like it runs on straight rails so I think we would have noticed if it wasn't set up correctly either.

Service log says the brake fluid chats was last done in 2009. May e it has but no logged in the service log, I'll check the history file at the weekend.

Once that's done ( being done as I type this) he'll take it for a spin and compare it to before
quattrokid

Ok.... Whats going on...

Brake fluid was changed twice, this sensation of the abs kicking in sometimes under hard braking...

Scanne again absolutely nothing is bringing up any fault codes at all, he took some logs or whatever it's called and each wheel sensors regulator in the abs unit is spot on as well, wheel alignment was done and very slightly tweaked

BUT STILL the yellow abs and traction control lights come on for no apparent reason, came on rn route to my Mums this afternoon.

The only mod it's had is the Awesome haldex ecu has been upgraded for an aftermarket one. No vag com codes for that either, brake pedal does seem to have a fair bit of travel in it before the brakes bite

Any suggestions please  
Alex@Fontain

quattrokid wrote:
Car feels like it runs on straight rails so I think we would have noticed if it wasn't set up correctly either.


That's what I was going to suggest, we had a TT 225 do something similar a little while back (but owner had replaced various suspension parts just prior).

I can't offer any advice but the car does look great in Imola!  
quattrokid

cheers Alex.

on ASN forum its been suggested it could be the MAF sensor?

now i assumed that measured the air temperature and density of the incoming air so the ecu knows what fuel ' air mixture is required etc...

colicabcadam

only thing that can trigger the abs is an electrical feed - are you 100% sure the abs rings are clear / clean ?

the uprated controllers acts differntly from oem (if i remember correctly)

oem under braking = haldex releases
aftermarket under braking = haldex stays engaged

are you aure you just don't have crap tyres ?
quattrokid

nope, tyres are brand new, AvonZX5's fitted in February i think.... ALL wheel sensors are spot and as are the rings your refering to.

IF a ring or sensor was tits, it would bring up a fault code but there isnt any fault codes anywhere!!

but the abs is kicking in early, (warning lights comes on at anytime, its been days, even weeks between coming on, doesnt come on every journey or when the car is started)
HEKTOR

I would say its a knackered MAF.
quattrokid

Hi Ed

2 others on ASN said that as well

What's the maf got to do with the brake pedal travel ????? Or the traction control & ABS yellow lights randomly coming on yet not leaving any codes?

If the mac was duff wouldn't that leave a code trail ?
Norrs2

Although no Engineer, I have to admit, I'm really stumped at what the MAF has to do with the Brakes.

Would someone care to enlighten?


The one thing that doesn't appear to be mentioned, is the ABS Pump itself fooked?
HEKTOR

Im sure the traction control/abs use signals/inputs from the maf to function properly.
JohnnyB

quattrokid wrote:
Ok.... Whats going on...

Brake fluid was changed twice, this sensation of the abs kicking in sometimes under hard braking...

Scanne again absolutely nothing is bringing up any fault codes at all, he took some logs or whatever it's called and each wheel sensors regulator in the abs unit is spot on as well, wheel alignment was done and very slightly tweaked

BUT STILL the yellow abs and traction control lights come on for no apparent reason, came on rn route to my Mums this afternoon.

The only mod it's had is the Awesome haldex ecu has been upgraded for an aftermarket one. No vag com codes for that either, brake pedal does seem to have a fair bit of travel in it before the brakes bite

Any suggestions please


Sounds like it could be losing the signal from an ABS sensor making it think that it needs to make the ABS run.

The MAF sensor is used for a load signal from the engine ECU. If this is the case there will be a MAF sensor fault code stored in the engine ECU.
S4 Muzza

Rich, I spoke to Jason yesterday and he said he'd call me if he was at the garage today to get mine hooked up to vagcom, but no phone call yet so I guess he's not. looks like it'll be next weekend before I get in!
quattrokid

Thanks Murray

Hopefully get the RS back by then, IF your around for a few minutes next Sat I'll ask Jase to come in

Seeing Mike tmw ( imolaRS4) who bringing his vag com with him so we'll scan it again and check the wheel speed sensors at 5 mph which Jimbo suggested we do, then see if each wheel is registering the same speed

Johnny, there's no fault codes anywhere ?!!!

Maf  sensor is an exchange item @ 120

Master brake cylinder is 85 quid. Not bought yet but the brake pedal does have to go down about half way before the brakes start to do anything.
Bobsaver501

My drummer had a Passat a couple of years ago with the same issues Rich. It went to 2 different places where they changed sensors and the abs pump to no avail. Then finally the master cylinder was changed as we thought in the first place as being the culprit, and all was sorted and back to normal after that.
They tried to charge him 800. Useless French garages.
S4 IRL

Very tidy looking car you have there, Makes me regret ever selling my imola S3  
quattrokid

^^^^ Cheers  

I'm wondering if it's because it's such low mileage for the age of the car, obviously spent most of its life stationary !

Cheers Ben, master cylinder I think will be on the cards soon anyway to be honest but the complete lack of fault codes is causing a few head scratches at the moment .
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