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Pulsating brakes when applied 

 

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 Post subject: Pulsating brakes when applied
Posted: Thu Apr 20, 2017 1:21 am 
Getting Side Ways
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G'day,

Can anyone let me know what would cause the brake pedal to pulsate?

I have noticed it a few times moreso when slowing down from 100kph to 60kph, pulsations seem to be increasingly worse. I've just had the discs replaced about 2 maybe 2 and half years ago.

Peter
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 Post subject: Re: Pulsating brakes when applied
Posted: Tue May 30, 2017 10:16 am 
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either the disc's have warped or the caliper is not sliding as it should or disc's have worn incorrectly. check it out as soon as possible as after two years the pads/disc's need to be inspected for wear.
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 Post subject: Re: Pulsating brakes when applied
Posted: Tue May 30, 2017 5:28 pm 
Getting Side Ways
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@Mad2,

Ok, thanks for that, I'll will do so some time end of this week.

Cheers
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 Post subject: Re: Pulsating brakes when applied
Posted: Tue May 30, 2017 6:53 pm 
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 Post subject: Re: Pulsating brakes when applied
Posted: Tue May 30, 2017 7:18 pm 
Stock as a Rock
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Usually a pulsating pedal will be the rear discs need machining, and a steering wheel shudder when braking will be the front discs need machining.
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 Post subject: Re: Pulsating brakes when applied
Posted: Tue May 30, 2017 9:03 pm 
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rod hansen wrote:
Usually a pulsating pedal will be the rear discs need machining, and a steering wheel shudder when braking will be the front discs need machining.



had the front wheel shudder on a EA ....... needed new disc's asap! ... they were THAT badly worn :evil:

ohh i believe a pulsating pedal can also be a sticky caliper :?:
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 Post subject: Re: Pulsating brakes when applied
Posted: Wed May 31, 2017 1:19 am 
Getting Side Ways
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Probably cheaper to replace discs with new instead of machining especially with Ford AUII
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 Post subject: Re: Pulsating brakes when applied
Posted: Tue Jul 25, 2017 12:28 am 
Getting Side Ways
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Thanks for the replies.

Replaced all discs and brakes, no more shudder or brake pedal pulsation. All good
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 Post subject: Re: Pulsating brakes when applied
Posted: Tue Jul 25, 2017 11:41 am 
Getting Side Ways
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I fixed that problem forever on my AUIII, I replaced the discs and calipers with the territory type (322mm front and 328mm rear), the braking was increased very measurably and the chance of the "pulse" through the brake pedal was 99% eliminated. I did the same thing to my mates FGII XR6. I think Ford should have bitten the bullet with the WHOLE BF/FG range and put them on the cars as standard, would have only required them to change all the wheels to a minimum of 17" to accommodate the calipers and increased disc diameter.
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 Post subject: Re: Pulsating brakes when applied
Posted: Wed Jul 26, 2017 1:13 am 
Getting Side Ways
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Papa Smurf,

Do you have 16" wheels?

I've got 16" wheels on my AUII, perhaps I should do the same?

Don't suppose you got the link for those discs and calipers?
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 Post subject: Re: Pulsating brakes when applied
Posted: Wed Jul 26, 2017 10:27 am 
Getting Side Ways
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You would be much better off with 17" as I don't think 16" will clear the Calipers mainly on the front?

It is not a cheap change over if you use New parts. You will need to change the front Calipers and replace the rear calipers. You would be looking at around $1000.00 to do it new but, you should be able to get the setup from a wrecker? Would be very much cheaper. You may also have to change the front brake hoses and the rear ones? I did it anyway as I got the new hoses cheap :)

Rear Discs
Front Discs and Pads

Front Calipers
Rear Calipers
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 Post subject: Re: Pulsating brakes when applied
Posted: Wed Jul 26, 2017 9:38 pm 
Getting Side Ways
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Papa Smurf,

Ok, thank's for the additional information regarding upgrade.

I did not think Ford AU's came out with 17" wheels. Looks like tyres will have to be changed too.

If I know which Vehicle has the 17" wheels. Definitely will be sourcing wreckers where possible. I never thought of the brake hoses, good point to remember.

Cheers
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 Post subject: Re: Pulsating brakes when applied
Posted: Fri Jul 28, 2017 5:19 pm 
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The XRs had 17" Wheels standard Bondy.

 

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93 EB II Fairmon8 with 17' EL GT's / Clear indicators / H.I.Ds / Sports exhaust / Lowered 2' / K&N / XR6 ECU.
2004 BA MKI XR6T in Lightning Strike paint / K&N / XR8 bonnet / BF lights and a few tweaks.

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 Post subject: Re: Pulsating brakes when applied
Posted: Sat Jul 29, 2017 12:05 pm 
Getting Side Ways
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Thanks for letting me know 93EB, I'll be looking at wreckers to source them if I can.

Would the 17" wheels fit the AUII without modifications for clearance and turning?
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 Post subject: Re: Pulsating brakes when applied
Posted: Sat Jul 29, 2017 4:13 pm 
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They will be fine mate. My dad has an AU2 Ghia that had factory 16 inch wheels. He now has AU2 XR8 17s on it. They fit straight on with no mods.
Personally i dont mind 17s. Also running them on my EB that had standard 15 inch wheels factory.

 

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93 EB II Fairmon8 with 17' EL GT's / Clear indicators / H.I.Ds / Sports exhaust / Lowered 2' / K&N / XR6 ECU.
2004 BA MKI XR6T in Lightning Strike paint / K&N / XR8 bonnet / BF lights and a few tweaks.

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