It's one of those weeks, my compressor gave up on the eas.. Amk hack on the way...Pressure loss in the brake system is getting worsethink i need to replace the pump.
It doesn't take any longer to get up to pursue and switch off, just loses pressure quickly
Amk?
tomcat59alan
Well-Known Member
Compressor repair kit, type in amk on the Bay.
hmmmm....
Like this.... It's only an experiment..Compressor repair kit, type in amk on the Bay.
tomcat59alan
Well-Known Member
Ah, replacing the whole compressor keep us updated.
Flossie
Well-Known Member
I'm no abs pro as you know...Pressure loss in the brake system is getting worse
It doesn't take any longer to get up to pursue and switch off, just loses pressure quickly
But what do you mean by losing pressure quickly?
Ignition on, pump does it's thing, switches off, switch on 30 mins later and the pump has to run again to repressurise
Pump has started running every other push of the pedal too, uncanny. I think it's pressure loss not a dead accumulatorNot tried but I bet mine does that
While cleaning my windscreen (so much glare this time of year) I noticed some trim on the edge of the dash has come away, might go a long way to explain a new rattle/buzzing sound. Anyone have any ideas how to refit it without removing the windscreen or pulling the dash?
There is a valve that is known to fail. Same valve was on a Saab and some American cars. @Datatek might have the details.
Flossie
Well-Known Member
I've just tried mine but after a 2hr shutdown and my pump runs.
I don't know what's normal on these things though..
Run for maybe 30 seconds on startup and then cut in slightly maybe every 4th push of the brake pedal. Other than that you shouldn't hear it running.
and apparently supposed to hold pressure overnight
I don't know about that. It will lose a bit and you'll see the fluid climb above the max but cannot recall it doing it without quite a few pushes of the pedal.
That's what I'm on about, the level in the reservoir creeps back up almost as you watch it
I would try and find that valve first. The pump costs £££.
Datatek
Well-Known Member
The SAAB part is the pressure switch, I don't know about the valve. I did post some time ago that there might be a non return valve in the pump assembly. Mine runs the pump on start up for a few seconds but the brakes work immediately. When the accumulator was duff, the brake s were poor until the pump got the system up to pressure which took a while.
The fluid does bleed back into the reservoir which is why the level is checked with the engine running or ignition on but drops very quickly on start up.
RangeRoller dt
Well-Sprung Member
I’ve got similar since doing the brakes and bleeding. Starting to think something isn’t air tight, although no fluid seems to be lost. Could be I just have air trapped in there somewhere making its way around. Is in the clutch now
