<VV> was Cylinder head temp thermister/now jacking points

[Bryan Blackwell]

Comments inline:

On Apr 20, 2008, at 5:45 AM, Chris & Bill Strickland wrote:
> So how come it is verboten to do it with a floor jack, but okay  
> with the
> leaf spring, which is there *all* the time, not just when the car is
> jacked up?

That's a really good point, I don't think anyone has ever mentioned  
that.
>
> The mounts fail because they get old and worn out, not because someone
> used a floor jack under the differential.  Maybe that is when they
> broke, but that is only the sooner part of 'sooner or later'.  They  
> were
> already failing, that's why they broke.

According to one major vendor, he's gotten brand new mounts back as  
"defective" and found out the car was jacked by the engine.
>
> I do not believe the shop manual says not to lift the car with a floor
> jack under the differential.

There are a lot of things the shop manual doesn't tell you not to do :-)

Having said that, here's my guess:  The failed mounts are often  
caused by jacking the car under the rear engine skid plate.  I'd say  
that's the really big no-no.  Jacking under the diff might be ok,  
although I think it's really not all that convenient.

--Bryan