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In Reply to: 730SEi intensive screen wash glitch posted by Stu on April 15, 2001 at 16:53:35:
Having open circuit voltage present doesn't mean it's getting current delivery. Start checking all related components i.e. fuse connections, relay, relay connections, stalk switch, pump motor connectors (have someone push the stalk while wiggling the motor connectors to see if there's a frayed wire locally). Sounds like there's some resistance. A long shot, but maybe the brushes in the motor are worn or there's crud built up on the armature commutator. It bench tests fine but craps out when in place.
gale
92 735i
144k
The intensive screen wash (pressing the control stalk in) will only work if the pump motor for the smaller tank is taken out of circuit. Mmm I though, a duff motor?, but no,
the motor itself works fine when removed and connected to a 12v power source.
It pumped water merrily across the kitchen when I tested it, much to my surprise! The disconnected connector shows voltage present when activated. Ideas ?
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