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Topic: Loss of No 4 gear in Cossie Granny - yes, I know.. (Read 1248 times) |
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pappa
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VM Diesel 2.5Tdi 90kW
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Loss of No 4 gear in Cossie Granny - yes, I know..
« on: Aug 16th, 2007, 8:40pm » |
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Sorry about the offtopic Granny question, but I have
already checked on the Granny Online with this one...
I suddenly lost the 4th gear from my -93 Cossie Granny A4LD
box. It has done that earlier every now in the past and
then but has worked like charm for many months until now.
Oils are red and smell good.
The Granny-Online suggests that it is the sensor (VSS)
that is causing this nine times out of ten. My box also has
been "whining" like Turbo for over 30.000 km that I've had
it.
So what's ya guys/gals reckon, is the sensor to your
experience or do I have an Auto to Manual search and
install project ahead?
I'll give the sensor a shot, it's easy, but ideas are
welcomed.
Btw. Granny can only do around 190km/h with three gears.
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Snoopy
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #1 on: Aug 17th, 2007, 7:29am » |
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My OLd Granny lost fourth gear one day ended up doing a full econ on the box .... its normally a sign that the inner workings are startng to fail in my experience. I did have four of them and two failed that way.....
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #2 on: Aug 17th, 2007, 7:32am » |
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martin_rowe
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #3 on: Aug 17th, 2007, 8:45am » |
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noise allways a sign of impending doom, if speedo works ok unlikly to be vss fault, its a 'mechanical' box fault most likly inside.
have good box if interested.
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #4 on: Aug 17th, 2007, 8:48am » |
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Speedo is not electric with this one, it's got a cable for it.
I'm in Finland Martin, maybe we skip the box from you 
It weights over 70kg, would probably cost about the same
as if I imported one whole car from Germany.
Thank you for your concern, I agree on the noise and doom.
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bertie
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #5 on: Aug 17th, 2007, 9:37pm » |
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papa
does your fuel computer work ? if not, then the VSS is at fault.
simon
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #6 on: Aug 20th, 2007, 4:35am » |
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Hi all.
Thanksforthe tips. Yesterday I changed the VSS and noticed
slight improvement in the gearshift, but there's still no 4th
gear. ( I may be imagining too ). The VSS was not turning
smoothly, so there was something wrong with it anyway.
I can acquire a known good for 70 euros, I think I might
go for it. Another known fault is the solenoid that takes
care of the turbine lock on 3rd and o/d on 4th. That's
what I've been told, but it could be that the whole box
is shot as well.
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Jonnycab
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Former owner of 2.3 Ultima Facelift saloon
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #7 on: Aug 20th, 2007, 9:22am » |
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Hi Pappa, you will probably already know this.....
..... I'm not sure whether the Granny has a MAF, but a dirty/faulty MAF can lead to loss of the 4th O/D gear
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #8 on: Aug 20th, 2007, 9:52am » |
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hi jonnycab,
Yes Granny has a MAF too, but it's got an A4LD autobox, which is more "mechanical"
than electric and it should not affect to gearchanges in this case at all. Well to my
less than perfect knowledge, it think it's like this. (I also know that my MAF's clean,
I'm running a heard of Scorpios here  )
I went to town this morning to pick up a working A4LD box from a guy
I know. I'll make a swap and then recondition this one.
Thanks for your help guys!
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Snoopy
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #9 on: Aug 20th, 2007, 4:10pm » |
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So can loss of vacum Applies to the granny and the 12v Scorpio.....4th gear is operated by VACUM.....on BOTH Models
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #10 on: Sep 6th, 2007, 12:27pm » |
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If anyone's still interested in this one, I've found out that there is actually two solenoids in the
24V Granny box. One that controls the Convertor Clutch and one that controls the 3/4 Shift.
found this from the "Ford Vehicle System Test manul and Electrical diagrams" manual.
I checked my vacuuming today. Yes indeed, one vacuum hose was disconnected and
connecting it made the gearchange sweet as pie, but did not bring back the converter
lock or the 4th gear. Next thing to try out is to find out if the solenoids click when
current is applied to them. They seem to "share" one lead (I'm not sure of it, haven't
been able to crawl under the car yet) according to diagram, it is now my main suspect.
I may just be totally off the track here, but life is a learning process.
So if nothing else comes out this quest, there will be knowledge - which I will
share of course.
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #11 on: Dec 27th, 2007, 1:48pm » |
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Had to give up. 
During the Christmas holidays I swapped the Grannys
gearbox into another one and that sorted my gearchange
problems until next time.
The old box started being quite funny when the temp
dropped below zero. If it stood still for a few days it
took at least 10 min drive before it would engage the
third gear.
Funny box. Well, got another one from Germany. Along
came another Cossie Granny which I slaughtered and
spilled it's guts all over Finland. ( read: broke and sold
its parts around Finland )
I still have the old limping box, would like to open it
up and see what's got into it. I happened to buy a
A4LD manual a while back. Good problem sorting guides
and all. All I need is time...
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Baz
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S Reg. 1998 24v Cosworth S2.9 COS (Deceased)
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #12 on: Dec 27th, 2007, 2:41pm » |
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I seem to remember my dear old dad had a problem with the autobox on his MK V Cortina. That turned out to be a pipe which had come astray and was stopping the top gear being selected....
I had the car for many years after he died and it was always a perfect changer after that!
Merry Xmas....
Baz
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blue2
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1995 Cosworth 24v & 2008 Mondeo Estate
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #13 on: Dec 27th, 2007, 3:45pm » |
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I have a similar problem with my 12valve Granada 1992 Vintage A4LDe (also have a 1995 Cossie) I seem to have a built in Legal Speed limiter as it drops out of 4th at around 75MPH gradually the speed at which this happens has got lower. I supected a vacuum leak but can't find one (vac guage reads about what I would expect) I gues I will have to try changing the modulator valve on the gearbox but I have only had one fail before wher it leaked internally and burned ATF. Anyone had similar problems on a Granada or 12V Scorpio ?
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #14 on: Dec 27th, 2007, 6:55pm » |
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I put my money on a leaking valve body gasket in your case. 
I had my box quoted by a guy who has been building and repairing
Ford's over 20 years. He has done some investigating on the A4LD's
and described one symptom just like yours being caused by a leaking
valve body gasket. But he is not into autoboxes, he's opinion for
me was to change it, don't fix it.
He's got a 2.0 Sierra with 527 bhp (last time we talked about it)
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Baz
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #15 on: Dec 28th, 2007, 1:33am » |
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on Dec 27th, 2007, 6:55pm, pappa wrote:| He's got a 2.0 Sierra with 527 bhp (last time we talked about it) |
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Thats as maybe.... but it is still a Sierra aint it??!!
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pappa
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Re: Loss of No 4 gear in Cossie Granny - yes, I kn
« Reply #16 on: Dec 28th, 2007, 7:33am » |
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It's documented with a Dyno and he said that it can produce more.
And yes - it certainly still is a Sierra! Nothing can change that I'm afraid
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