James NZ
12th October 2019, 01:32 PM
Hi guys,
My '99 D2 V8 had spat out another SLS compressor, the failure stemming from water ingress into the motor causing the brush holders to rust away. So having read about replacing the wabco compressor with aftermarket types I happened to have a brand new reasonably sized tyre compressor sitting around which was duly installed into the rear of the disco. The original motor supply was extended to activate a new heavy duty solenoid inside the car which then supplies the compressor motor through suitable cables direct from the battery. The air supply goes back into the original valve block which is still in the original position. Works great and much faster than the original pump.
However the problem is this. When I drive the car, stop for traffic lights etc, then drive off the compressor pumps away for roughly 10 seconds then stops. Next set of lights the whole thing happens again. But it will also pump air even if I only drive a couple of metres then stop. So the process is, drive, stop & count to 15, drive 2 metres & compressor starts, stop the car count to 15, drive 2 metres & compressor starts etc etc etc. It will do that process all day long. I've also driven long distance out of town, stopped for an intersection, drove off and the compressor gives a roughly 10 second burst of air. I've also noticed that when I get home and get out to open the gate, the exhaust solenoid dumps a very brief amount of air. Of course when I drive down the driveway the compressor has also started up. I don't know if this happens on the road as I've never heard it happen.
There are no leaks that I'm aware of. The car can be sitting parked up for ages (read weeks) and does not loose height. It also got new airbags last year.
Cheers, James NZ
154858
My '99 D2 V8 had spat out another SLS compressor, the failure stemming from water ingress into the motor causing the brush holders to rust away. So having read about replacing the wabco compressor with aftermarket types I happened to have a brand new reasonably sized tyre compressor sitting around which was duly installed into the rear of the disco. The original motor supply was extended to activate a new heavy duty solenoid inside the car which then supplies the compressor motor through suitable cables direct from the battery. The air supply goes back into the original valve block which is still in the original position. Works great and much faster than the original pump.
However the problem is this. When I drive the car, stop for traffic lights etc, then drive off the compressor pumps away for roughly 10 seconds then stops. Next set of lights the whole thing happens again. But it will also pump air even if I only drive a couple of metres then stop. So the process is, drive, stop & count to 15, drive 2 metres & compressor starts, stop the car count to 15, drive 2 metres & compressor starts etc etc etc. It will do that process all day long. I've also driven long distance out of town, stopped for an intersection, drove off and the compressor gives a roughly 10 second burst of air. I've also noticed that when I get home and get out to open the gate, the exhaust solenoid dumps a very brief amount of air. Of course when I drive down the driveway the compressor has also started up. I don't know if this happens on the road as I've never heard it happen.
There are no leaks that I'm aware of. The car can be sitting parked up for ages (read weeks) and does not loose height. It also got new airbags last year.
Cheers, James NZ
154858