Sprint screen wash pump comes on intermittently

[robertross]

The screen wash pump on my 1975 Sprint pumps fluid intermittently. Any suggestions as to where the problem is? Thanks.

[xvivalve]

There is a rubber impeller inside the motor assembly which can deteriorate...

Also, a simpler solution is nasty stuff can grow on the end of the pick up pipe and block the gauze filter restricting flow...

[yorkshire_spam]

Is the pump running even when you get no water?
If so, then a blockage or a faulty pump as per Alun's suggestion.

Ours is intermittent, but it's the switch in the stalk, pushing it in a certain way seems to work.

[robertross]

The pump switches on even if there's no water. It's not a problem of irregular flow when I activate the screen washer. The issue is that the pump comes on by itself at random.

[xvivalve]

Possibly a short in the switch then...or at the connectors to the motor...

[robertross]

The problem is solved! On the wiper stalk the "housing" retaining the spring had broken. This meant that the conical copper contact operated by the spring was not disengaging properly. A drop of superglue resolved the issue.

[ClassicFan]

The problem is solved! On the wiper stalk the "housing" retaining the spring had broken. This meant that the conical copper contact operated by the spring was not disengaging properly. A drop of superglue resolved the issue.

You ae commended for trying to track the problem down for 10 months, most would have give up long ago