Just had an mot and my car passed again with 2 new tyres. I had a few advisorys one of them was rear brakes fluctuating but not excessively. Any ideas what that means and why it might be doing this? Sounds like normal abs to me.
Brakes fluctuating.?
- Thread starter chew
- Start date
Andyjdmteg
Members
Maybe seized/faulty bias valve?
rust
Members
To rule it out . You need to take the brakes off and check he life of pads and disc. And maybe cleans the carries and sliders. This might help... Maid a massive effect to my car...
Andyjdmteg
Members
Some fresh brake fluid aswell if it hasn't been done in a while.
freddofrog
won 16.4k on Euro lottery :)
It means that the needle(s) were not steady on the meter on the rolling road.chew said:
They drop the wheels into the rolling road and it takes the wheels up to speed, then the mechanic applies the brakes.
The rolling road is split into two, left and right, and there are two meters that show the braking power for each wheel.
As the mechanic gradually applies the brake pressure, the needles increase, until max brake pressure is reached.
The needles on the meter should be steady all the way up. A warped disc on one side would cause the needle to waver on that side. Shame that the advisory doesn't specify if it was one or both.