Quote:
Originally Posted by Ultramaroon
I've heard some really sing, none of which have failed. The reason I suggested slowly stepping on the throttle while listening is to demonstrate how the whole servo system goes into and out of resonant peaks many times throughout its travel. This is due in part to natural hysteresis of the gearbox between the motor and the position feedback encoder.
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WOW! Thanks for the educational background on that ......
I reckon the old carburetor "hissed" and a throttle body "sings".
Really, nothing has changed.
The setting, back in the day ....... at the corner garage/gas station. Johnny's parents just got him a brand new Chevrolet for his HS graduation (he graduated first in his class (of 35)).
Johnny pulls into the station, opens the hood on his car, removes the air cleaner from the carburetor and asks Bubba, who works at the station, and dropped out of school, "what's wrong with my car, why is it hissing?"
Bubba replaces his air cleaner, shuts the hood and turns to Johnny, shaking his head, "don't EVER open the hood again ...... just bring your car by and I will check the oil, fluids and tire pressure for you".
THE END
humfrz
PS - Bubba's sister helped out at the station .....
