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Old 11-27-2007, 07:05 PM   #492 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.47 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
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11-06-2007, 06:26 Pm

Quote:
Originally Posted by MetroMPG
3) A weird rubbery squeak/graunch type sound when the drivetrain is loaded up abruptly from a stop. It's either a motor/tranny mount complaining or the rubber spider in the motor/tranny coupler. Need to investigate.
It's a transmisison mount on the driver's side "frame rail". There seems to be a lot of play in the big rubber bushing, plus it makes the funny sound when the drivetrain is torqued up.

Question is: do those bushings fail and allow excessive play? Or am I just hearing a new noise with potentially the same amount of play that was there before?

The neat thing is with an electric car, I could test this by myself:

- put it in reverse, pull the hand brake hard, switch the key on

- get out, open the hood & activate the potbox arm to repeatedly load up the drivetrain while watching engine mounts & other stuff move around.

Try that with a (manual transmission) gasser!
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