- Posts
- 12,659
- Location
- Sud ouest France !
Dodgy Brakes.. L322 2002 Hard brake pedal hardly stops!!!
- Thread starter Sylvesters dad
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
myfirstl322
Well-Known Member
- Posts
- 41,354
- Location
- Hoots mon...
@Sylvesters dad ........
Did the brakes become crap overnight?
Why did you change 3 calipers?
If they didn't bleed with a good spurt of fluid at the nipple then you may have internally degraded flexi hoses.
Did the brakes become crap overnight?
Why did you change 3 calipers?
If they didn't bleed with a good spurt of fluid at the nipple then you may have internally degraded flexi hoses.
Last edited:
- Posts
- 16,479
Brke items (like steering and suspension) should be changed in axle sets - changing 3 calipers means one axle still has an old caliper, this *could* lead to differences in braking effort and become an issue....
Any how, have you had it on diagnostics to rule out any ABS ECU issues or ABS Pre-Charge Pump issues?
I am sure that decent Full Fat Testbook-esque diagnostics can monitor brake system fluid pressures and could give an indication of a fault somewhere - The ABS system doesn't just handle braking, it also has a part to play in dynamic stability, traction control and gives information to the EAS system.
Any how, have you had it on diagnostics to rule out any ABS ECU issues or ABS Pre-Charge Pump issues?
I am sure that decent Full Fat Testbook-esque diagnostics can monitor brake system fluid pressures and could give an indication of a fault somewhere - The ABS system doesn't just handle braking, it also has a part to play in dynamic stability, traction control and gives information to the EAS system.
myfirstl322
Well-Known Member
- Posts
- 41,354
- Location
- Hoots mon...
I always presumed that if 'tronics' die the system continues to work in analogue** form,
** ie. Normal hydraulics but without Abs/Dstc
- Posts
- 16,479
Oh it will, but I am not sure what would happen if the pre-charge pump failed, if braking effort is increased.
If there is good vacuum to the servo and still no braking effort - can we assume the servo is duff?
myfirstl322
Well-Known Member
- Posts
- 41,354
- Location
- Hoots mon...
Well if he did the test in the vid then it's a pass, Shirley?
- Posts
- 16,479
He says it dipped a little.....which may not be conclusive, I would say the pedal should drop a couple of inches (if not a little more) when testing as per the vid.....his 'dropped a little' is not definitive to saying the vacuum servo is OK or not.
I would be tempted to see if @Sylvesters dad can do a video, and then others can compare to what is considered correct.
- Posts
- 12,659
- Location
- Sud ouest France !
I did ask that also.
I think @Sylvesters dad needs somebody there to look with him...
So does the L322 have a pressurised system similar to the P38?
It could get complicated real quick for him.. but then hopefully something daft could it be yes... Yes..
- Posts
- 16,479
No, thankfully they removed the boost pump system and went back to standard servo assistance, but there is a pre-charge pump for the ABS system....as I said above a few posts back I am not sure what happens if the precharge pump fails - if the braking is still as is (minus ABS) or if there is a difference in pedal effort required.
- Posts
- 12,659
- Location
- Sud ouest France !
He did say that the pedal lifts back up after the engine is turned off!!
I think, if he could (at the cost of brake fluid and time)...
Undo the unions on the master cylinder so it is not pressuring the system.. and by pressing the pedal could then tell if the master cylinder has seized!
Or in reverse, starting from individual calipers or sections in the braking system.
Last edited:
- Posts
- 16,479
Yeah, not sure if that is correct or not......I will check later, but I only have the baby BMW with me today.....but will check shortly.
myfirstl322
Well-Known Member
- Posts
- 41,354
- Location
- Hoots mon...
Yep, a comparison is a good start in this instance.
- Posts
- 12,659
- Location
- Sud ouest France !
What about yours myfirst?Yep, a comparison is a good start in this instance.
myfirstl322
Well-Known Member
- Posts
- 41,354
- Location
- Hoots mon...
- Posts
- 12,659
- Location
- Sud ouest France !
Mysoldl322?Long gone.........
I'm a fraud, keep it to yourself
- Posts
- 12,659
- Location
- Sud ouest France !
Mylastl322..
- Posts
- 12,659
- Location
- Sud ouest France !
Arr ..
Myoldl322..
Myoldl322..
Last edited:
- Posts
- 16,479
Just tried it on the baby BMW.....
As above, with moderate pressure on the pedal, it sinks about 2 and half inches, and no pushing back on switch of either.
I would be inclined to ask @Sylvesters dad to either do a vid so we can see the movement, or check how far it drops on start - remembering to evacuate the servo vacuum first - as per the video!
@Sylvesters dad.
Did you do the work because of this problem or is it since you did the work?
The only time my pedal “feels to kick back” is when the ABS kicks in.
Did you do the work because of this problem or is it since you did the work?
The only time my pedal “feels to kick back” is when the ABS kicks in.
