Scary Dealers! (A Jeep Sort Of Update)

Apr 29, 2004 2 Replies
S

Having been utterly disbelieved by the owner, the Jeep went into the local Chrysler dealership today for a look over.



They found no fault.



Now, given that until very recently, the servo was quiet, and now it's suddenly a hell of alot louder, and given that you can actually hear the air being sucked through it with your head in the footwell, is this right?



I would say no, as the sudden increase in volume during operation would be a cause for concern and show something isn't as it was, and couple that with the fact that no air should be sucked into the engine without going through the throttle body first - Let alone through the bloody servo!



I quite frankly couldn't give a damn, so long as I *never* see that lumbering thing in my rear view mirror, but I'd love to know whether I'm right or not on this one?


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M

Yes, servos do let some air into the engine (assuming it is a conventional petrol engine with a sucker from the inlet manifold) This is why many cars engine notes change when the brake pedal is pressed, because the mixture changes, it can even be a useful diagnostic for rich or weak mixture. All servos I know of pull air from inside the car into the pressure side, through a filter usually.

mrcheerful

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S

Fair nuff. I have to say, I've never been able to hear the air being sucked through on any of my cars which is what made me wonder wtf was going on.

Still puzzled as to why the servo went from whisper quiet to louder than any I've ever heard when pressing the pedal though. And the owner was blithering on about the handbrake making it make the noise to or something, but that was around the point I stopped giving a damn a couple of weeks ago, so don't know what that was all about really.

I like 40 year old designs, but modern built 40 year old tractors with Yank badges and a computer to tell you you've opened the door, you can keep!

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