[T3] Head Sensor...

[Jim Adney]

On 10 Sep 2018 at 0:56, J. Jonik wrote:

> Just tightened the head sensor 13 mm nut.   But, the head sensor wire
> connection above is one of the routine connections I tidy up, just in
> case, when engine is funny. Doesn't always work.   But how to know
> which connection of many did the trick to make car run better?  I
> rarely would do One at a Time.  

The only wire connections I've ever seen need attention are the ones directly 
on the injectors. That seems to be because the pins on replacement injectors 
are actually thinner than the originals.

> Now that the sensor nut is tightened just a little (making cleaner
> connection?), it's fine every day....for now. 

That sensor originally came with a copper sealing washer under it. Is that 
washer still there? If it's missing, it's possible that water can get in there and 
cause corrosion which insulates the sensor from the head. I've not seen that 
problem, but I usually find the copper washer in place.

>  No bent sensor wire....but I adapted a socket wrench small extension
> to allow the wire to pass unharmed through the 13mm socket so I can
> tighten/remove that sensor nut. (Just ground a metal notch on one side
> of the male part of the short extension.)  Easier than trying to jam a
> 13mm wrench somehow under the engine tin or whatnot to get to it. 

I have a 13 mm tube socket wrench that I use, but your solution is great.

-- 
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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