Hi

Thanks for the replies, this one went out a week ago with a new regulator valve (on SOR) & crank sensor.

I have no contact from driver to say it has been a problem this week, but to early to claim a fix as it previously went 2 weeks without issue.


Although it it always good practice to have a positive diagnosis before fitting parts. In my opinion it is on occasions (especially with intermittent faults) more cost effective to replace low cost items to eliminate them.

We can /could have a debate on that subject I am sure !! I personally think a decision has to be made on basis of cost of component, probability of a fix and diagnostic time to prove good or bad.

A typical example would be a VAG fault code for CTS, Temperature shows correct on Live at time of test. Is it cost effective to leave car to get cold scope sensor cold to hot to positively prove sensor faulty, or better just to replace £20 sensor on a 95% probability of a fix?

Basic checks should of course always be carried out and if fault is present at time of test the correct testing is appropriate.


Cheers Aidan