Gearbox Not Changing

[alancee]

the problem i have now is totally unexpected for me ,i changed my diff because it was making unwanted noises ,and doing stuff worn out diffs do,its there no its not yes it is ,my original diff was 3.67 ,i got a 3.27,same bodily just had to change over the drive 3 bolt flange,i was hoping this was the final chapter but no ,box changes d r 1234 in tip stationary,move of, it seems to be stuck in 2nd,will not allow tip manual change,no kick down and will not function as it should,surely ,to me, changing final drive ratio that amount would not do this,similar to different size wheels really ,do i have another problem surface at this moment by coincidence? it was ok before with the noisey diff,kick down, changes,cruise etc ,i know nothing as to what the maf does whatsoever,could that be shot ,miles are high at 180k but fully serviced mb,i would welcome any pointers because at the moment i am very perplexed indeed
thank you, alancee

 

[Cosworth]

My friend the problem you have there is the you have put the wrong ration diff in your car and that is why you have the problem.

You must put the correct ratio in to sort this problem.

 

[television]

No this is not a ratio problem.

With the MAF un plug it and if the car goes back to normal then you have the answer.

Now a speed sensor or speed signal missing could also do it

 

[Xtractorfan]

If yours is the electronic box i would get the codes read and any faults cancelled

 

[television]

As Xtractorfan. did you change the ECU with the box

 

[alancee]

My friend the problem you have there is the you have put the wrong ration diff in your car and that is why you have the problem.

You must put the correct ratio in to sort this problem.

hi cosworth ,can you explain more

 

[alancee]

No this is not a ratio problem.

With the MAF un plug it and if the car goes back to normal then you have the answer.

Now a speed sensor or speed signal missing could also do it

hi malcolm ,unpluged the cable to the maf ,no ,repeat no change to situation ,thanks alan

 

[alancee]

If yours is the electronic box i would get the codes read and any faults cancelled

all codes read and cancelled

 

[alancee]

As Xtractorfan. did you change the ECU with the box

no did not change ecu ,would not know what to look for ,its been ok in the past with different boxes,see previous posts if you have all night

 

[alancee]

No this is not a ratio problem.

With the MAF un plug it and if the car goes back to normal then you have the answer.

Now a speed sensor or speed signal missing could also do it

speed sensor /signal ,where how do i trace that?

 

[television]

As a rough outline when a speed signal is missing the box does not know what to do and it locks up into a get you home mode.

Just a couple of points, was the box ok before you changed the diff.

And we would need to do some homework wth the box ECUs

 

[alancee]

As a rough outline when a speed signal is missing the box does not know what to do and it locks up into a get you home mode.

Just a couple of points, was the box ok before you changed the diff.

And we would need to do some homework wth the box ECUs

box ok before ,best box yet ,box does seem " dont know " its ok not moving ,whats the maf do to the box ,can it unbalance it,if need be i will put back the noisey diff and see what happens ,crazy ,alan

 

[television]

You do have a speed sensor on the rear end is the ABS lamp on

When the MAF is down, so is the engine output, and this gives a similar problem

The difference in the diff ratio is so slight that cant do it, and the gear box does not know that is different

 

[alancee]

You do have a speed sensor on the rear end is the ABS lamp on

When the MAF is down, so is the engine output, and this gives a similar problem

The difference in the diff ratio is so slight that cant do it, and the gear box does not know that is different

abs light not on,where is the speed sensor rear end ,could that have been knocked in changing,i saw no cables,maf down,output down,similar problem?,diff ratio is minimum but i dont understand your wording sorryalan

 

[alancee]

You do have a speed sensor on the rear end is the ABS lamp on

When the MAF is down, so is the engine output, and this gives a similar problem

The difference in the diff ratio is so slight that cant do it, and the gear box does not know that is different

get the last line now ,i agree how can it ,but is it more intelligent than i give it credit?

 

[television]

The speed sensors are in the link


What I said was the the gear box does not know that you have changed the ratio a touch, so it cant be anything to do with that

http://www.detali.ru/cat/oem_mb2.as...GM=717.466&CT=F&cat=45P&SID=54&SGR=665&SGN=17

 

[alancee]

The speed sensors are in the link


What I said was the the gear box does not know that you have changed the ratio a touch, so it cant be anything to do with that

http://www.detali.ru/cat/oem_mb2.as...GM=717.466&CT=F&cat=45P&SID=54&SGR=665&SGN=17

yes i get that now malcom ,i getting slow ,see thread previous to yours ,i agrree,but something is spooky

 

[alancee]

malcom are the speed sensors for the speedo,only for that ,when i lift the car at the rear in drive there is no speed registering,been told speedo pick up is front wheel,drive on the road speedo reads normal,thanks alan

 

[television]

Yes the speed signal is picked up on the front, and also the rear for the ABS and it depends where the box takes it, if the speedo is working then so is the rest of it providing it is getting to the gear box.

I will sleep on it tonight

 

[alancee]

Yes the speed signal is picked up on the front, and also the rear for the ABS and it depends where the box takes it, if the speedo is working then so is the rest of it providing it is getting to the gear box.

I will sleep on it tonight

i will have a night mare about it , be awake at 4 am i bet