Ford F150 Transmission Shudder
JohnS
concerning a violent shudder when the engine is under a load over
35mph. I followed the advice on this forum and changed the transmission
fluid and it fixed the problem . Well , there is still a slight shudder
under the most extreme torque situations. I have heard about some
transmission additives that should eliminate the shudder completely.
Can anyone give me some info on these additives?
Thanks
John
Sent via Deja.com http://www.deja.com/
Before you buy.
RM
with a new torque convertor.
Joel Frahm
>A co-worker with the same problem (94 Bronco, e4od) solved the problem
>with a new torque convertor.
>
A new TC is usually worst case. Sometimes a COMPLETE fluid change and
a switch to Mercon V will fix it. Marcon V supposedly has more
anti-shudder additives in it. I think the trans holds about a case of
fluid, something like 10-11 quarts. I got a case of Mercon V
semi-synthetic from Autozone for $30.
Sadly my brother got the "AOD Shudder" and AAMCO rebuilt his tranny to
fix it, WITHOUT changing the TC. Naturally the problem didn't go away
until they replaced his TC as a seperate repair at addtional charge.
Idiots. It's such a common problem too.
Keep that fluid clean and replace it often. A cooler helps prevent
fluid breakdown also. ATF is cheap, transmissions are expensive.
-Joel Frahm
JohnS
I used regular Mercon for the fluid change as I had heard Ford does
not recommend Mercon V in this transmission ( E4OD) .
The fluid change dramatically improved the shudder problem but it is
still there. I want to try one of these additives such as Lubeguard or
the Ford transmission additive before I have the torque converter
replaced . The trouble is I can't find these two additives anywhere.
Yes , the Ford parts dept never heard of a 'Ford transmission
additive',the closest thing they had was a differential friction
modifier . Lubeguard is just as elusive in the other parts stores.
Alan Quan
(http://www.jcwhitney.com/) Of course, depending on where you are,
shipping cost might not justify it ...
-Alan
JohnS wrote:
--
99 Saturn SL2, 45K
98 Ford Taurus SHO, 30K
94 Ford Taurus GL, 73K
89 Nissan Maxima SE, 188K
77 Mercury Marquis Colony Park S/W, 148K
85 Honda Accord, 140K (gone)
83 Honda Civic, 340K (gone)
dbug
fluid change including the torque converter will greatly reduce or
eliminate the shudder. An additive like Lube Gard can also help. If
the trans has been regularly serviced and is in otherwise good working
order, you may need to only have the torque converter replaced. While
you have the trans out, you may want to pull the pump and install a
later model torque converter apply spring to bump up the application
pressure a little. Many good transmission parts suppliers can now
rebuild your converter with a heavy duty clutch assembly which gives
it a much better and firmer lockup. For the six cylinder, do not have
a high stall converter installed - the six does it's job way down low.
On Wed, 30 Aug 2000 15:11:08 GMT, JohnS <johnd...@my-deja.com>
wrote:
>I has a complaint with my truck ( 93 Ford F150 4.9 eng , e4od trans)
>concerning a violent shudder when the engine is under a load over
>35mph. I followed the advice on this forum and changed the transmission
>fluid and it fixed the problem . Well , there is still a slight shudder
>under the most extreme torque situations. I have heard about some
>transmission additives that should eliminate the shudder completely.
>Can anyone give me some info on these additives?
>Thanks
Saab85900
for Mercon, Mercon V, Dexron III, Chryler ATF + through +4, and others.
Change all the fluid, not just what is in the pan.
Will most likely take care of the problem
Dick in Falls Church
Using and selling AMSOIL (First in Synthetics) over 24 years
Joel Frahm
wrote:
>Joel,
> I used regular Mercon for the fluid change as I had heard Ford does
>not recommend Mercon V in this transmission ( E4OD) .
I had read a TSB that I recall as saying that Mercon V was now
recommended as a service replacement for Mercon back to the old AOD's.
I know they recommend it in the AODE and 4R70w's. I'm not 100%
certain it is recommended for the E40D but I think it's pretty much a
synthetic blend Mercon with some anti-shudder additives. Some oil
companies boast Mercon V fluids that pass both specs so you could use
one of those too. Penziol and Quaker State 4x4 come to mind.
Here is Penziol's page on Mercon V:
http://pennzoil.com/TechData/pdsheet/Commercial_Industrial/Gear&Transmission/pdf/MerconV.pdf
A quick read of Havoline's page on Mercon V claims it is backwardsly
compatible with Mercon as well:
For my AWD Aerostar (which I think has the same engine and tranny as
the like year Ranger) I plan to use Redline D4 ATF when I get around
to changing the fluid. My trans was rebuilt shortly before I bought
it so it has very fresh Mercon in it so no hurry. The D4 ATF is a
full synthetic that supposedly passes both Mercon and Mercon V
standards but I don't think they have gotten it labeled as such yet.
I spoke to a chemist at Redline about it and it sounds like a good
choice. Plus it will be fully compatible with any fluid left in the
system.
To me it sounds like Mercon V was developed to solve or prevent your
problem and I don't see how it could hurt, but perhaps the risk is too
great if Ford indeed does not recommend it. I'd do it.
> The fluid change dramatically improved the shudder problem but it is
>still there. I want to try one of these additives such as Lubeguard or
>the Ford transmission additive before I have the torque converter
>replaced .
Did you do a complete fluid exchange or just a drain and refill? If
you did a complete change and you still have shudder I suspect you are
shopping for a TC, but I guess at that point you could try a fluid
exchange with one of the Mercon compatible Mercon V fluids and see if
it helps. If you do this at a quick lube it might cost you $100 that
you could put towards your new TC though.
>The trouble is I can't find these two additives anywhere.
>Yes , the Ford parts dept never heard of a 'Ford transmission
>additive',the closest thing they had was a differential friction
>modifier . Lubeguard is just as elusive in the other parts stores.
>John
I recall hearing something about the Ford additive, maybe it's now
part of the Mercon V package or something.
G'luck,
-Joel Frahm
JESSE ZHU
Amsoil is not cure all-porblem medicine.
JohnS
I did the drain and refill and filter myself ,about 15 quarts was
drained, torque converter had a drain plug . I installed a drain plug
in the trans pan so the next drain and refill will be a breeze.
Transmission pan was clean so that was good news ( just a little
crud around the magnet.
There is also a chattering sound when the engine is idling in park ,
I'm almost certain it's coming from the torque converter . Could this
be related to the shuddering problem. Is the switch to Mercon V likely
to fix this too?
Joel Frahm
wrote:
>Joel,
> I did the drain and refill and filter myself ,about 15 quarts was
>drained, torque converter had a drain plug . I installed a drain plug
>in the trans pan so the next drain and refill will be a breeze.
Sounds good.
> Transmission pan was clean so that was good news ( just a little
>crud around the magnet.
> There is also a chattering sound when the engine is idling in park ,
>I'm almost certain it's coming from the torque converter . Could this
>be related to the shuddering problem. Is the switch to Mercon V likely
>to fix this too?
I don't know. From what I have heard, a complete fluid change (as you
performed) will often cure the shuddering, especially when it's mild.
Mercon V, being a synthetic blend, should have more of an effect than
fresh Mercon but it's probably not a miracle cure. I was hoping you
hadn't drained the converter and thus had replaced only 1/3 of the old
fluid, then I thought you had a good chance with a complete fluid
change and Mercon V. Maybe it would still help. Did the fresh Mercon
have any effect? If not, then I doubt Mercon V will fix it
completely.
Sorry I can't be of more help, I have been trying to avoid this
problem and so far haven't had to fix it :-)
I did do some checking on Lube Guard, I found their website:
http://www.lubegard.com/
No dealers in my area but I suspect that if I use synthetic ATF I
won't need it.
-Joel Frahm