I have had the same problem with mine and have currently got the modulator in pieces, I have found a problem with the female plug where the shuttle valve plugs into the modulator will post pic's onanother thread and the old shuttle valve switch was O.K. but pulled it to bits in trying to trace fault.
				
			 
			
		 
			
				
			
			
				disco seriesII mods so far:-bullbar,hyd winch,
detriot locker,lsd front,C.D.L kit,chipped and bigger intercooler,2" lift,rock sliders, lsd in transfer case, modified auto trans.
 
In the event of nuclear war,Disregard this message
			
			
		 
	
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