Thanks Michael,

It was a general recommendation as a preventative from an AA mechanic.  He said 
the bulk of the engine breakdowns on modern cars can be fixed by replacing the 
coil pack or the crank sensor and they carry quite a number on each van as a 
result.  He said they can be affected by heat and age.  Also they cannot use a 
computer connection for most cars so are back to trial and error, backed by 
experience!  

Interestingly, he also said the AA recommend that if a coil pack has been found 
faulty and replaced, the plugs and leads should also be replaced as it is 
possible a problem with these could cause the coil pack to fail in the first 
place. Also rough handling like pulling off the plug leads when the engine is 
running can cause problems.  (Did not do that!)  Makes the modern systems seem 
very fragile.  

To support his view, the only time we had a breakdown in the old Punto my son 
learned to drive on it was the crank sensor that failed.  Basically it drove 
normally, parked up and would not start again, no fuel  & no spark.  But of 
course the car would not tell you what the problem was so you are stuck with 
having to use a garage - that's why I like older cars!  The basic CVH will 
still run with the distributer loose, carb faults or whatever - not very well, 
but it will run!  Still, I am learning new ways...... part of the fun of this 
particular project coupe.  

Derek



On 11 Jul 2012, at 19:46, [email protected] wrote:

> Your information might be correct but from my experience with a 1.6 turbo CVH 
> the weakest link might well be the connector rather than the sensor itself.  
> Michael
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