I have a possible issue with my gearbox and would very much appreciate some guidance.
The problem:
There have been two occasions within the last month where I have asked the car to change from 3rd to 2nd in manual and the gear indicator has blinked, the revs have dropped but then it has found the gear and all has been fine. Then within the last week there have been two further occasions where it's done the same but not found the gear in time and thrown code P2837 and put the car into limp and auto only. I have a Cobb so on both occasions I have been able to read and clear the code immediately. This makes me think it's more than just a glitch, noting I have never had this happen before.
I have two questions in particular:
1) What are the causes of shift code P2837 Shift fork B?
I have seen a few posts about it just being a glitch, although mine has happened a couple of times now so I think I have an issue. What are the causes of this?
2) I had some gearbox work done last year and would like to understand what, if any interrelation there is between this possible new issue and that previous work performed (see spec below).
Spec of my box:
Car is a 2010 CBA running stage 4.25 but with torque capped to 590Lbft (647bhp)
2012 the following work was done (circa 30k miles):
Solonoid clean (under warranty)
First gear circlip fitted
Willall racing gear stoppers fitted (stop overselection)
Ran sweet as a nut, until in mid 2015 I broke a clutch basket and had the following work done (@ circa 56k miles)
Dodson billet clutch basket B
Of the two main tranny filters, one was replaced and one was cleaned and refitted
I proactivly opted to have the solonoid packs cleaned
I also had the solonoid clips fitted
I also had uprated dodson magnets fitted
For info only, in december I had the 60k service performed and my bellhousing changed.
As far as I was concerned with the above work done and the type of driving I tend to do, I was thinking my box should be reliable. I put the car to hibernate with no problems and it's only having got it out now that it is doing this.
So if anyone can help with one or both of the above questions I would appreciate it.
The problem:
There have been two occasions within the last month where I have asked the car to change from 3rd to 2nd in manual and the gear indicator has blinked, the revs have dropped but then it has found the gear and all has been fine. Then within the last week there have been two further occasions where it's done the same but not found the gear in time and thrown code P2837 and put the car into limp and auto only. I have a Cobb so on both occasions I have been able to read and clear the code immediately. This makes me think it's more than just a glitch, noting I have never had this happen before.
I have two questions in particular:
1) What are the causes of shift code P2837 Shift fork B?
I have seen a few posts about it just being a glitch, although mine has happened a couple of times now so I think I have an issue. What are the causes of this?
2) I had some gearbox work done last year and would like to understand what, if any interrelation there is between this possible new issue and that previous work performed (see spec below).
Spec of my box:
Car is a 2010 CBA running stage 4.25 but with torque capped to 590Lbft (647bhp)
2012 the following work was done (circa 30k miles):
Solonoid clean (under warranty)
First gear circlip fitted
Willall racing gear stoppers fitted (stop overselection)
Ran sweet as a nut, until in mid 2015 I broke a clutch basket and had the following work done (@ circa 56k miles)
Dodson billet clutch basket B
Of the two main tranny filters, one was replaced and one was cleaned and refitted
I proactivly opted to have the solonoid packs cleaned
I also had the solonoid clips fitted
I also had uprated dodson magnets fitted
For info only, in december I had the 60k service performed and my bellhousing changed.
As far as I was concerned with the above work done and the type of driving I tend to do, I was thinking my box should be reliable. I put the car to hibernate with no problems and it's only having got it out now that it is doing this.
So if anyone can help with one or both of the above questions I would appreciate it.