Question about 2000 Alfa Romeo 156

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Selespeed gearbox fault

Hi sorry fault still there just been out in the car was fine up to 35 miles then started to do the same thing missing 3rd gear changing up and going to 4 th then i can change to 5th and back down the gears including 3rd after another 10 miles its missing 3rd and 4th going to 5th or not finding any gears untill i am allmost stoped the it will go to 2nd i can rev and it will find 5th i can drive but need to get speed up in 2nd then a long pause befor it finds 5th gear mybe i should look for a second hand gear box or i could strip this one but would not know what to look for any help apreciated thanks

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  • bobclock0 May 22, 2008

    hope ou can help

  • bobclock0 May 28, 2008

    thanks but its a selespeed gear box regards bob

  • Anonymous Mar 30, 2014

    in low speed or 2nd and 3rd gear my car missing
    suddenly its R.P.M fell down and increase agian

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  • 4,102 Answers

Hi, it might be worth getting your gear selector checked as these have a nylon/plastic ball at the bottom now if this has worn down then when you try selecting a gear it will cause the problem your having.(its under neath the gearstick before it links to the two selector rods so check this.)

Also worth checking alot of cars where the two rods come from the selector and then their is two rods going to the gear box one of these is fixed and cant be adjusted but the other rod can be adjusted and its often the case that this adjustment can take up the play and solve your problem.
The problem with this is that it can be adjusted forwards and backwards it slides when you undo the bolt that goes through it so make sure you can mark exactly where the selector is where you can adjust it so that you can set it back their if it makes it worse or no differance.
If yours can be adjusted then make sure you mark where it is now then just move it a small bit at a time one way and then give it a try if no differance then move it a bit more if it gets worse then put it back where it was originally then try going the other way see if it makes any differance if not then it wont be adjustment problem.
If neither of these are problem then the chances are the gears have stripped and this would give you the problem your having as the faster you go the harder it is for the teeth to locate on the correct gear in the box.

As for stripping the box it isnt really worth doing as the parts would be expensive and would cost as much as a second hand gear box.
The best option would be a reconditioned gear box as you know that it has be rebuilt with any new parts needed and you should also get some warranty on it which is always a bonus.

Are you sure the clutch is ok test this by having the car running and at a standstill with the hand brake on put car into 2nd gear and with the handbrake on gently let the clutch up slowly and see if it feels like its slipping if the clutch is ok then the car will stall this is what will happen if the clutch is ok.

Let me know how you get on or if you have any problems or questions and ill assist you the best i can ok.

Posted on May 27, 2008

  • paul proctor May 28, 2008

    sorry i got it wrong my fault totally i replied to you under my askers i got the year wrong for the car and thought it was the normal box not the newer selespeed box i appologise

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sorry mate now i get you. The fault could be with the ECU on the selespeed box this would need checking also click here
that is a forum that discusses problems with only that type of box so may be of some help to you.
Im still looking into your problem and have a few people i can talk to you so ill get back to you shortly ok.

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If you have any problem then give me a shout or if you have any questions then give me a shout then ill be glad to assist you further.

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