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Screenwash pump anomoly??
I have noticed something weird on my 1987 730i (m30 engine).
There are two modes on the screenwash steering stalk: Water wash only. (Pump 1 only). Screenwash then water wash. (Pump 2 then pump 1). The water wash function is fine. The screenwash function seems to feed water only to the jets. I have unplugged the water wash pump, then pressed the end of the stalk to invoke the screenwash on its own ... which produced a dribble from jets (of pure screenwash). Plugging pump one back in sees the "water" part of the screenwash cycle work again. I have swapped the motors over ... same problem. There seems to be only 6 volts getting to the plug which goes onto the screenwash pump ... is this correct. Holding the button in makes the screenwash pump activate its dribble for 2 seconds, then off for 4 seconds, then on again for 2 seconds. (Normal?) Any ideas where to start ... does the screenwash pump have 6 volts sent to it on purpose?? Maybe its a control module (one of dozens on this car) gone wrong?? B.t.w: The windscreen wipers work when either screenwash mode is used. -- Regards.... Steve --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.808 / Virus Database: 550 - Release Date: 08/12/2004 |
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