"Buzzing" from Ignition and Brakes: Ford F-53
2012 Class A Winnebago Adventurer Ford F-53 V10: Two separate "buzzing" sounds. With the key in the ignition and before turning the key to start the motor, If the brake pedal is depressed, a bu...
Forum Discussion
DFord wrote:
Adventurer Buck,
At least one of them is normal. If the engine isn't running, when the brake peddle is pressed, it's normal to hear the HydroBoost/HydroMax assist motor run to provide help with braking. It's an electric motor running a pump that you hear. The assist with the motor running comes from the power-steering pump. All Ford V10 F-53 chassis do it.
If you've got another noise, I'm not sure what would be causing that.
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I've always looked at the "buzz" sound when the key is in the ON position as a sound that indicated power was at the ignition and ready to turn-over the motor. Would turning the key to ON (not accessory) cause the Hydroboost's electric motor to turn-on or would there be another electric driven instrument?
