Are Garages Relying Too Much On Diagnostics These Days?

[insider]

Having read this post - http://www.fordgalaxy.org.uk/ford/index.ph...st&p=131371 - and from my own experience it seems to me that garages are losing their diagnostic skills relying instead on the car's computer to tell them what's wrong with it. What does everyone else think?

 

I bought a used Renault a couple of years ago. After a few days it was apparent that it had an uneven idle and the engine was losing power intermittently while cruising. As it was still under warranty it was taken to a main Renault dealer and also to an independent garage. Both told me they had performed a diagnostic check on the car but that there was no fault.

As the car was not behaving as it should I did my own checks and simply removing the spark plugs revealed the cause - one of the plugs had a 0.2mm gap! (should be 0.9mm). The gap was duly corrected, the plugs replaced and the problem had disappeared! A simple solution yet 2 different garages couldn't fix it.

I assume that the car must have been manufactured with this fault since the service interval is 4 years for spark plugs on this model.

[seatkid]

<_< computer says no..... ;)

 

;)