GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: danmusic24 on 15 February 2013, 12:59
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going to change my abs pump over the weekend,is it just bleed through brake nipples? or do you neeed vagcom to purge the pump? any other advice on this job would be a great help.....
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Vag Com
All four wheels off the ground, ignition on
Procedure for Bleeding the ABS Brake Pump
[Select]
[03 - ABS Brakes]
[Basic Settings - 04]
Group 001 (may be group 002 in Mk3 VW Golf/Jetta)
[Go!]
This will trigger the ABS pump to turn on for about 10 seconds. You should hear the fairly loud pump clicking during this time.
Click the [Done, Go Back] button and you're all set.
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Just did a search on bleeding brakes but nothing that is helping me.
Im sorry for high jacking this thread.
I have jus re-replaced my mk4 rear calipers on my mk3 with the mk4 calipers as the 1st mk4 calierps that i put on started to leak from the banjo that goes into the calipers. Anyway i replaced them and bled them but i still have spongy breaks. We bled them 4 times per side. The 1st 2 times the car was turned of 2nd time around we bled them with car running. Do i need to bleed the front calipers now? I did 1 side at a time. The banjo hose was off from the caliper for half hour to an hour.
Also will the abs pump need bleeding?
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You cant vagcom bleed a mk3 only mk4 and upwards i tried but the pump dosent push the pedal back up my abs works fine no faults nothing just bleed the brakes starting from ns/r and the os/r and so on
And for the question above you dont need to bleed the abs pump did u run out of brake fluid when you changed the flexi banjo hose if you did loose all fluid u need to bleed all brakes as your saying you still feel the pedal is spongie have u tried a leak test to make sure your fitting of the pipe was ok just start the car hold down the pedao if the pipe then becomes wet u have a leak and that will draw air in if i was you bleed all sides use a see through pipe and a empty coke bottle so when u bleed the line you can see any air bubbles that are coming out
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Thanks for the reply mate.
No it didnt run out off fluid.
When i took the banjo hoses off i stuck a rag in the hole of the ss pipe so reduced the leak. I did have a leak on the banjo hose going into the caliper only as i was being shy with the banjo bolt mad4vws fixed that.
There are no other leaks as we had the car started and kept pumping the brakes while checking the hoses.
Is it better to bleed the system with the engine running???
Whats the order of blleeding? Drivers rear, pas rear, drivers front then pas front?
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Thanks for the reply mate.
No it didnt run out off fluid.
When i took the banjo hoses off i stuck a rag in the hole of the ss pipe so reduced the leak. I did have a leak on the banjo hose going into the caliper only as i was being shy with the banjo bolt mad4vws fixed that.
There are no other leaks as we had the car started and kept pumping the brakes while checking the hoses.
Is it better to bleed the system with the engine running???
Whats the order of blleeding? Drivers rear, pas rear, drivers front then pas front?
dont bleed with engine running its always the rear and the opposite side to servo in your case near side rear
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Thanks for the reply mate.
No it didnt run out off fluid.
When i took the banjo hoses off i stuck a rag in the hole of the ss pipe so reduced the leak. I did have a leak on the banjo hose going into the caliper only as i was being shy with the banjo bolt mad4vws fixed that.
There are no other leaks as we had the car started and kept pumping the brakes while checking the hoses.
Is it better to bleed the system with the engine running???
Whats the order of blleeding? Drivers rear, pas rear, drivers front then pas front?
dont bleed with engine running its always the rear and the opposite side to servo in your case near side rear
Ok i wont blees with engine running.
What do you mean by that? Bit too early for my brain to fully function lol
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I get what you mean now lols. Was too early for me to understand that.
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Ok. We have re bled the system starting from drivers rear, pass rear, drivers then passangers. Its better but very soft at the top of the brake bit. Doesnt go all the way down like it did but i can tell its still not a good bite till the pads heat up
Any help?
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Have u changed pads recently
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Ye i have (yellow stuff front and rear pads with all round grooved discs and mk4 rear calipers with braided hoses) i pushed the pistons all the way back with a rewind tool for the rear. My cousine bled the brakes last time with the eezi bleeder kit and they were solid as feck (excellent bite) but the rear calipers from the mk4 were leaking so i changed them the other day with mk4 calipers again and this time i bled them with the 2 man bleed (1 pumping brake pedal, other openeing the nipple) going to my cousines garage today to bleed with the eezi bleed and see what happens. Will keep you guys updated.
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Still no luck. Will try and bleed the servo tomorrow
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So the pedal dosent go all the way down is it firm but still spongy
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It does go all the way down but it does have some resistance (gets harder towards the bottom)
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It does go all the way down but it does have some resistance (gets harder towards the bottom)
hmmm it shoulnt be going all the way down if u let it settle then hold the pedal if it goes all the way u got a prob somewere have u checked the bleed nippples for leakage try bleed the master cylinder have your pads bedded in tht can make a crappy pedal if there fairly new other than that only other things i can think.of mk4 calipers are crap for bleeding i changed pads all round on a vw beetle same calipers as a mk4 and the pedal was going all the way down even though i had to bleed all the wheels still no better if nothing works then just drive it like that and hopefully it will sort itself out the mistake i made is u do 1 side then pump the pedal and then do the other side i have only experianced these problems on a mk4 braking setup
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did the fluid level drop below the minimum when you were chaging the calipers? if so check to see if there is bleednipple on the master cylinder there usally is but is a right pain to get to, you could have a slight airlock in the master cylinder and no amount of pedal pumping will get it out
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Thanks for the advice and all the help inc a MR DH :cool:
My cuz bled the abs unit and they are working better. All he did was tell me to hold the brake pedal down and undid the pipe nut then tighten them up.l. Done them 4 times each one and 1 had some air in it.
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Glad u sorted it mate :cool:
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Bled my system today, drained the old fluid through normal procedure at each corner, bled the MS, ran the pump, bled it again and got rid of some more air, got lazy and and used gravel drive to run abs pump, did all four corners again, perfect pedal :smiley:
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Bled my system today, drained the old fluid through normal procedure at each corner, bled the MS, ran the pump, bled it again and got rid of some more air, got lazy and and used gravel drive to run abs pump, did all four corners again, perfect pedal :smiley:
How did you bleed the ms and ran the pump?
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Bled my system today, drained the old fluid through normal procedure at each corner, bled the MS, ran the pump, bled it again and got rid of some more air, got lazy and and used gravel drive to run abs pump, did all four corners again, perfect pedal :smiley:
How did you bleed the ms and ran the pump?
Remove the supply to the abs pump and bleed into a jar, like doing your callipers.
Used VC to run the pump until my battery died :grin:
Got through loads of brake fluid getting the air out but got a firm pedal after an inch of movement, will bleed again when I do my front discs and pads later in the summer.
Good trick from my dad was using a different colour fluid to purge the system, then purging till the colour changes with the correct fluid (also meant I did not waste the good stuff££).
Been having a mare with my ABS so after fixing that we checked the MS out (PITA getting to that) and decided to bleed the system to make sure its sorted.
One job off the list