General: 70: Help please - What can the fault be ???

[Gandalph]

Hi

I have a 1998 C70 T5 GT AUTO 46,000 miles on the clock its a beauty.
starts first time and all things work as they should, apart from some fault lights being on.

1.Engine management fault light on all the time
2.Auto gearbox fault light comes on for a while then goes off then comes
back on
3.Intermittent Speedo and mileage failure
4.Brake circuit and ABS fault lights come on for a few seconds then go off

SRS, ETM & Tracs fault lights have never come on.

I have changed the Gearbox ECU and the ABS ECU and they are still come back on.

All I'm left with now is either

A.One of the ABS wheel sensors but then why would autobox light come on.
B. The ABS Recon has not been done properly and hence does not work.
C. The CAN bus network is faulty the wires or whatever lets the gearbox ECU talk to the ABS ECU are faulty

Any ideas ???

Thanks

[osterly1]

i'd say u have the cluster failure, there is a thread on it somewhere in this , the cluster doing all manners of starnge things , is 1 of the symptons, and it definately sounds like thats your problem , will try and see if i can link you to the thread or search for instrument cluster , its out there soemwhere

[Chris_Rogers]

You need to have the fault codes read from all the affected systems, so an informed diagnosis can be reached.

If I was guessing I'd put my money on the ABS module being faulty at least.