|
In Reply to: Windshield washer fluid motor. posted by Jerry on March 03, 2002 at 12:23:57:
I think my windshield washer fluid pump is kaput.
Firstly, is the pump a cylinder about 5 inches long & 1.5 inches wide and fits via a grommet near the bottom of the fluid resivior?
If so, I checked voltage to that "cylinder" and it is zero. When I pull back the wiper switch on the steering column, this voltage jumps to 12 volts.
I think I found the right part & did verify proper voltage. Was I right? Anything else anyone can think of?
Thanks in advance. Jerry.
You might find a second pump, located just forward of, and a few inches lower than, the pump you found-- not sure on your model... but there's a large, round, plastic screw that is just behind the washer bottle. Use a quarter coin in the screw slot to remove it. The entire bottle will slip out of its mount very easily. You can unclip the electric leads to the motors, remove the bottle, and clean the container if you like. If the rubber grommets that the two motors sit in are sloppy, you can get new ones from the dealer-- they can leak after a while. They're very cheap and easy to replace.
You have four windshield sprayers, two on the left, and two on the right... each pump feeds a one left and one right-side sprayer-- hope you follow me... anyway, disconnect the hose leading from the pump you suspect is bad... connect its electric lead... turn the switch on briefly to check there is output. If there is a flow at that point, your problem is not the switch, but the spray nozzles. The nozzles have heaters inside that are designed to keep the fluid from freezing in cold climates. The heaters can bake the wax and silicones into the nozzle. If you find the nozzle is clogged, pull back the lining on the inside surface of the hood and carefully disconnect the sprayers by squeezing the clips on the sides. They become brittle-- be careful. Don't attempt to reuse the hose clamps-- BMW uses special tools to install them, and they are not really reusable) Cut the hose clamps away carefully-- the plastic nipples crack easily. If the sprayers are clogged and you want to try to rehabilitate them rather than buy new ones (they're about $20. a piece, with club discount) I suggest soaking them briefly in CLR, that stuff for removing lime and rust in bathtubs and sinks (you can get a bottle at most drug store chains for about $5.). Don't let them soak too long-- CLR corrodes and weakens certain plastics. Once they're cleaned reinstall them, but if you live in the South... if you never expect to be in freezing temperatures... don't reconnect the electric heater elements. They can create more problems than they solve. When you reconnect the hoses, you can use plastic wire ties... they work just fine. But the sprayer motors are very powerful, so you do need to connect them securely, or the hoses will blow right off the nipples. Hope this helps.// Bill 735i
© 1997 -
2009
Jump Internet Inc. All rights reserved.
