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Originally Posted by Richard L
Is the water level sensor close to a sub-woofer or a washer pump? The level senesor has a magnetic switch inside, sensitive to magnetic field.
We have many valves and they are all aseembled in house. Each one is designed to work with a specific PWM frequency and pressure. I need the serial number to look into the build specification so that we can learn from any operation anomalies. If your valve is unstable, we can alter varies part of the valve to overcome the flutter or resonance at certain frequencies.
Majority of the 12 Watt inline valves on the market is too slow at 160psi for the HFS-6. Working on the bench is very different to working in the car.
The flutter may be caused by debis in the flow sensor. The only way forward on this by the sending you anothervakve and we can examine yours on our test bench properly. Theris one thing I like you to check - is the inline restrictor free of clog?
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Thanks for the explanation Richard. Actually there is a small sub box (single 10", I think) in the trunk, mounted off-center, toward the passenger wheel well. I'd guess the distance from the level sensor to the speaker magnet is ~12".
About the inline restrictor, I asked the owner to check the size of it (or if it was installed at all) as I remember that a restrictor that is too big will have a spike of flow at pump turn-on. Is it possible to (by error) install the plumbing without using the restrictor?
Sunny