'clack' from under-bonnet SLK230

[Paul Drawmer]

Friend of mine has an 'R' reg SLK230.

There are a pair of solenoids at the top of the rhf wing.
These have started to make a regular sort of 'tap' noise.

What do they do - guess it's something to do with heater regulation, and is this new noise a problem?



It's a fair 'clunk' you can hear it inside the car, and feel it on the body of the solenoids.

[jith]

Paul Drawmer said:

Friend of mine has an 'R' reg SLK230.

There are a pair of solenoids at the top of the rhf wing.
These have started to make a regular sort of 'tap' noise.

What do they do - guess it's something to do with heater regulation, and is this new noise a problem?



It's a fair 'clunk' you can hear it inside the car, and feel it on the body of the solenoids.

These are the heater control valves Paul. They should be silent, so I suspect the diaphragms have gone allowing the solenoids to travel against their stops. A pricey wee item by the way.

J

[Paul Drawmer]

Thank you James - power of PistonHeads; a quick, informed answer.

See what you mean about pricey! At least it looks an easy job to do.

Thanks, Paul D.