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DirtyDuck



Member Since: 11 Sep 2017
Location: Wessex
Posts: 179

United Kingdom 2014 Freelander 2 SD4 HSE Lux Auto Loire Blue
Air in Braking system

I’m changing discs pads and flexible hoses and I have stupidly run the reservoir too low when bleeding the system, so sucked a load of air in. I had bought an excess of fluid just in case and have bled it through till no bubbles. However, are there any traps that might have got air stuck. And what is the preferred order for bleeding. I may have some fluid left and figure bleeding again won’t do any harm.

The pedal feels a little soft to my mind (not finished yet, so car on jack and done 3 out of 4.

Post #425602 28th Sep 2022 8:54 am
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Nodge68



Member Since: 15 Jul 2020
Location: Newquay
Posts: 1825

United Kingdom 2009 Freelander 2 TD4 SE Manual Rimini Red

Often with modern vehicles, the ABS pump needs to be activated to pump out any air stuck in the ABS modulator. For this reason it's recommended to never allow the reservoir to become empty.
You can try pumping out the air with the pedal, but if the pedal remains very spongy, then it could well have air trapped in the modulator.

Also don't forget that new pads and rotors will need to bed in, before full pedal resistance is felt. Thumbs Up 2009 Rimini Red SE TD4. Soon to be sold.
Hyundai Ionic 5 Ultimate on order.
Gone. 2006 Tonga Green i6 HSE.

Post #425605 28th Sep 2022 9:43 am
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 4571

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red
Re: Air in Braking system

DirtyDuck wrote:
I’m changing discs pads and flexible hoses and I have stupidly run the reservoir too low when bleeding the system, so sucked a load of air in. I had bought an excess of fluid just in case and have bled it through till no bubbles. However, are there any traps that might have got air stuck. And what is the preferred order for bleeding. I may have some fluid left and figure bleeding again won’t do any harm.

The pedal feels a little soft to my mind (not finished yet, so car on jack and done 3 out of 4.


If you've allowed air into the ABS system then I think you will need help bleeding it - as the ABS system needs to be bleed electronically

Click image to enlarge
 Jules

Post #425620 28th Sep 2022 3:56 pm
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NoDo$h



Member Since: 27 May 2008
Location: fings go booooom.
Posts: 490

England 2010 Freelander 2 TD4 HSE Auto Santorini Black

Some code readers can activate the ABS pump for bleeding - for example the Foxwell NT has this, and I seem to recall the iCarsoft might also be able to do this but it's a while since I had one of the latter. Otherwise it's off to an indy or dealer to use their kit to activate the pump and bleed the brakes. Current driveway contents:
2021 V60 Cross Country B5
2009 FL2 dog bus and shooting wagon

On Order: 2023 Fisker Ocean Ultra - deposit paid.

Post #425626 28th Sep 2022 5:57 pm
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DirtyDuck



Member Since: 11 Sep 2017
Location: Wessex
Posts: 179

United Kingdom 2014 Freelander 2 SD4 HSE Lux Auto Loire Blue

Damn! That’s what I feared. I’d some recollection of hearing that. I have a foxwell nt 401, but it seems to have limited functionality.

My local garage is just at the bottom of the hill - what could possibly go wrong Rolling with laughter

Post #425628 28th Sep 2022 8:03 pm
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DirtyDuck



Member Since: 11 Sep 2017
Location: Wessex
Posts: 179

United Kingdom 2014 Freelander 2 SD4 HSE Lux Auto Loire Blue

Always knew that hill decent mode would come in handy. Hmm, expect it uses the brakes. Censored .

Post #425629 28th Sep 2022 8:23 pm
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 4571

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

You still have a handbrake, but I suppose it depends upon how steep and busy the hill is. Jules

Post #425641 29th Sep 2022 8:38 am
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NoDo$h



Member Since: 27 May 2008
Location: fings go booooom.
Posts: 490

England 2010 Freelander 2 TD4 HSE Auto Santorini Black

And apologies, it's the Foxwell AllSystem that does this. They must have rebranded/changed the model naming as I've got the AllSystem but when I bought it back in the mists of time I'm sure it had an NT model number Current driveway contents:
2021 V60 Cross Country B5
2009 FL2 dog bus and shooting wagon

On Order: 2023 Fisker Ocean Ultra - deposit paid.

Post #425643 29th Sep 2022 8:59 am
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DirtyDuck



Member Since: 11 Sep 2017
Location: Wessex
Posts: 179

United Kingdom 2014 Freelander 2 SD4 HSE Lux Auto Loire Blue

Well, just so you know, you can bleed the air out yourself. I’ve got an ezi bleed with non-return. Did it on my own. Pushed it through quickly. 10 pumps, top up, 10 pumps. Pushed at least half a litre through each one.

Brakes are the best they’ve ever been. Bite fast and hold. Improving as they bed in.

Car was 24,000 miles when bought and the brakes have always been poor.

Changing pads and discs and flexible hoses had made a great improvement. OE everything so no spec change. Hoped for but didn’t expect the improvement! Happy days.

Post #425742 5th Oct 2022 11:42 am
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