I have an old 1997 punto and the screenwash pump is failing -
I've bought a replacement pump but have no idea how to change it out. The
screenwash bottle (and I assume the pump) is fitted under the engine bay at
the front wheel arch? how do I get to it?
any help appreciated.
to take the pump out you have to jack up the car, take off the wheel,
remove the plastic lining of the front wheel arch (something like 8
screws and dirty hands), and then you can get to the pump. If I remember
correctly, you can take the pump out without removing the water
container. The pump is only clipped in. Make sure that the rubber
sealing remains in place when putting the pump back in.
Has the pump stopped working altogether, or do you only get a trickle of
water out of the front jets? Does the jet for the rear window washer
still work? If so, then it is more likely the valve in the T-connector
to the front jets that has failed (same pump for rear and front). The
said T-connector is cheap and easy to change.
If you can hear the pump whirring it probably is working, it's worth
checking the electrical connectors to each pump first, before you
get to removing the pump, they tend to corrode and make a bad
connection. As mentioned the valve, jets a piping can suffer from
blockages. A hot (not too hot) air gun on the tubing push on joints
may soften them enough to get them off.
Thanks for the help you guys...
The pump whirrs away but suddenly a few weeks back the 'power' of the jet
wash became less and less to the point now where water just trickles out the
nozzles... I will follow the given instructions and replace the pump, but
check out all the other suggestions at the same time.
Replacing the pump is a bit of a pain because over time
the tubing hardens, as you have to disconnect the tubing anyway
it won't hurt to extend the pipe so you can blow down it, and
also attach another pipe to the pump outlet to check it pumps water.
The pumps very simple, just a motor and impeller blade, so if
it whirrs it's probably able to pump water, unless there is a
blockage in the system (which is usually the non-return
valve in the piping or a blocked corroded jet).
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