Speedo calibration code Ford Sierra gearbox

[jointcbvirginmedia.com]

Just had my wheels changed from 14' to 13'

Avon ZZS 185/55 R13 fronts & 215/55 R13 rears

Caerbont speedo 0 - 160 MPH 

Does anyone know the correct PPU code the pick up is via a ford sierra gearbox electronic sensor

The speedo has been checked by the Caerbont its working correctly.

Any help would be appreciated.

Jon

[K7 VCT]

Caerbont have a chart they can email you i understand.

[jointcbvirginmedia.com]

I have got the Caebort speedo programming codes

The PPU code for my wheel is 039440 but I think that code only works if the rear wheels link to the speedometer

Mine is linked to the gearbox.

But thank you for your help.

Jon

[Dave J]

What year is the speedo ? or could you post a picture of the rear of the speedo ?.

It may be adjustable with the potentiometer .

[jointcbvirginmedia.com]

Hi Dave,

It’s a Caerbont speedo 0-160 MPH

I spoke with Ian this morning the technician at Caerbont who’s been very helpful and hasn’t charged me highly recommended him.

When I changed the wheels from 14” to 13”

I recalibrated the speedo using the PPU code but this code was for a wheel pulse frequency

Not a gearbox pick up which my Caterham has.

He has now inputted a different code which should sort the problem out he’s posting the speedo back to me today should have it tomorrow hopefully all should be sorted.

Might have to make a minor adjustment if out by more than 10% against my sat nav.

Thank you for sparing the time to help, much appreciated

Jon