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  #22  
Old August 2nd 08, 07:30 AM posted to rec.autos.makers.ford.mustang
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Default Hum after rear-end gear change

While everyone loves to blame the mechanic... obviously the boat-person that
built the gearset is an expert, I have found that some gearsets are just
plain noisey.... Installation was performed using factory tools in
accordance with factory procedures and to factory specs.... and the gears
were noisy to some degree or another.... Another R&P, installed exactly the
same way, might give no noise at all...

The important thing to remember is that your mechanic MAY be the cause of
the noise... or he MAY be a victim of it..... There is no assurance that the
gearset was perfectly machined. Without knowing your mechanic nor what he
has for tools and/or skills.... there is no assurance that there is nothing
amiss with the installation.

The noise itself.... how loud is the hum????? Is it coming from the
gears???? (A dealer several miles away is having trouble with an 07 Mustang
GT - noise on decel.... three new gearsets and two wheel to wheel assemblies
and the noise is still there... ). My SuperCrew developed the dreaded "tip
in" gear whine while it was still under warranty.... I never did have the
time or shop space to have the concern addressed..... but it doesn't bother
me because playing the radio at normal volume makes the noise disappear....
How objectionable is your noise....

Now... before some of you guys try to rip my lips off.... I have no idea of
what any of you do for food..... But I dare you to tell me that you have
never.,.... EVER said "that's good enough...".

"88 Mustang GT Conv." > wrote in message
...
> I'm coming to all of you as the experts.
>
> 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.
>
> Just wanting to get some thoughts/opinions.
>
> The mechanic I'm dealing with is great and has always done excellent
> work on the car. He goes over and above what I've asked him to do with
> little cost.
>
> I'm just thinking that it should be normal as it can become quite
> annoying.
>
> Thanks in advance,
> Marc



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