dad1wood

literally ALL used/new cars have tight vibration
running engine up/down through rpms at varying speeds; anyone know why?
old 302's never had any of this...and older mileage 4.6 sound 'terrible'
to say the least

 

tom

the vibration is most likely caused by your trans "jump" I have 5 full size
fords with the 4.6, and do not have any vibration problem with them. also, I
have driven many other cars with the 4.6, and none of them have a problem
either.
"dad1wood" <dad1wood@aol.com> wrote in message
news:d24cdecbf34595a757c4e20625185766@localhost.talkaboutautos.com...
> literally ALL used/new cars have tight vibration
> running engine up/down through rpms at varying speeds; anyone know why?
> old 302's never had any of this...and older mileage 4.6 sound 'terrible'
> to say the least
>

C. E. White

"dad1wood" <dad1wood@aol.com> wrote in message
news:d24cdecbf34595a757c4e20625185766@localhost.talkaboutautos.com...
> literally ALL used/new cars have tight vibration
> running engine up/down through rpms at varying speeds; anyone know why?
> old 302's never had any of this...and older mileage 4.6 sound 'terrible'
> to say the least

Define older mileage. We have had a number of modular motors in my family
and I done of them have had any vibration problems. The highest mileage one
had 147,000 (5.4L in an Expedition) and it ran very smoothly the day I
traded it on a new one. The vast majority of cabs in my area are used Crown
Victoria police cars purchased at the State auction sale. Most of these have
hundreds of thousands of miles on the engine and they seem to be running
just fine.

Ed

Ashton Crusher

On Sun, 09 Oct 2005 13:31:03 GMT, "C. E. White"
<cewhite@mindspring.com> wrote:

>
>"dad1wood" <dad1wood@aol.com> wrote in message
>news:d24cdecbf34595a757c4e20625185766@localhost.talkaboutautos.com...
>> literally ALL used/new cars have tight vibration
>> running engine up/down through rpms at varying speeds; anyone know why?
>> old 302's never had any of this...and older mileage 4.6 sound 'terrible'
>> to say the least
>
>Define older mileage. We have had a number of modular motors in my family
>and I done of them have had any vibration problems. The highest mileage one
>had 147,000 (5.4L in an Expedition) and it ran very smoothly the day I
>traded it on a new one. The vast majority of cabs in my area are used Crown
>Victoria police cars purchased at the State auction sale. Most of these have
>hundreds of thousands of miles on the engine and they seem to be running
>just fine.
>
>Ed
>

I had a van at work with the mod V-10 motor in it and it ran past 250K
on the original engine and tranny. Engine was still good when the
tranny went out at 255K.