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Old July 31st 08, 03:11 PM posted to rec.autos.makers.ford.mustang
88 Mustang GT Conv.
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Posts: 6
Default Hum after rear-end gear change

On Jul 31, 12:19*am, Zeke-baby >
wrote:
> 88 Mustang GT Conv. wrote:
>
> > I've recently had my gears changed in my 1988 5.0L convertible
> > to 3:73:1. (I only have 152,000KM on the car) There's a humming
> > noise which comes from the rear-end which gets significanltly
> > louder between 60-90 KM / Hr.

>
> > I was told by the mechanic that this is a common thing with the
> > gears and should be ignored.

>
> Let me guess. *If you're cruising at speed with a light throttle,
> and then lift your foot off the gas, the noise goes away (or gets
> significantly quieter).
>
> Sounds like it wasn't set up properly.
>
> Cheers!
>
> * * * * * * * * * * * * * * * * * * * * * * * * * * * * *zëkë
>
> --
> '65 Fastback 289/4-speed/3.50s
> '91 LX Hatchback 5.0/5-speed/3.08s (MIA since Feb'00)
> '97 GT 4.6/5-speed/3.23s (the winter beater)


This is exactly what happens. The noise is less significant (although
not gone) when the throttle is released.

To answer some other questions. The gears were provided by the
mechanic and I don't know the brand. I'm not a car buff (I like a nice
car but know little about them) and therefore rely heavily on other
people's knowledge experience.

The car is an automatic and I have 2" flowmaster exhaust (which make
enough noise on their own) and the humm overpowers them easily at that
speed range (with the top up or down).

Thanks to everyone, I will contact the mechanic and discuss with him.

Marc
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