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Author Topic: Matra lives again ! ... well MINE does ... :-)  (Read 959 times)
Lennart Sorth
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« on: April 02, 2017, 10:59:03 pm »

Hi all,

After having neglected my lovely Murena for 3.5 years, while I was rebuilding my new house, I today FINALLY found time to give it a little of my time.

The engine has for over a year not been able to get started, due to lack of ignition - something that previously was an intermittent fault, now become permanent.

I soon found myself focused on the 6-pin connector in the passenger-side of the front, leading to the back of the car - and found several of the pins badly corroded, to the point of almost not making any connection at all !

I put the connector itself into the dishwasher, which left it looking BRAND NEW :-)

All the threads in the wires looked fairly sad - some almost black, so I applied the trick I had read about on the Internet : Vinegar saturated with salt - and stuck the exposed wires in there for 10-15 minutes.  This actually WORKS, - and the wires came out looking shiny and NEW !  - a quick rinse in baking-soda dissolved in water neutralises the acid, and I set about putting new pins on, and assembling the connectors.

Then I - tentatively - tried turning the key, - and lo and behold, the trusty engine came to life as had it just been going yesterday ! :-)

This made me very happy of course, and I now feel the the loooong list of "remaining things to be sorted out" is MUCH less daunting, now the heart is beating ! :-)


SPRING IS HERE !!! :-)


Regards to all of you !

Lennart

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Lennart.Sorth@matrasport.dk
Murena 1983 1.9i silver // Alfa Romeo Giulietta 2.0d 2012 white // Smart 4two cdi 2010 blue //
Lennart Sorth
Administrator
YaBB God
*****
Posts: 815



WWW
« Reply #1 on: September 16, 2017, 05:55:33 pm »

Update ...

as so often with an old car, I *thought* I had found the reason for unstable ignition, but Roy
pointed out that there shouldn't be any direct link between the 6-pin connectors and ignition,
- even if there is a fat 12V supply (which was very corroded).
Roy instead pointed me at the ignition lock, and as always I believe he was right - once I got
the thing out of the car I could first of all see that one of the leads coming off the lock was
scorched and when started to attempt to measure its workings, that wire simply came completely
loose and fell out of the connector.

And this was indeed the ignition wire !  

The other is for cranking, and that seems to work just fine.

I have already treated the otherwise very tired and corroded looking wire with wonders of a
saturated salt solution in vinegar, - and the de-oxidising process stopped with a rinse in a
baking-powder solution, hence it looks fairly clean on the picture below.

My next challenge is to figure out how this connector on the ignition lock comes off, so I can
redo it.  





/Lennart
« Last Edit: September 16, 2017, 06:37:00 pm by Lennart Sorth » Logged

Lennart.Sorth@matrasport.dk
Murena 1983 1.9i silver // Alfa Romeo Giulietta 2.0d 2012 white // Smart 4two cdi 2010 blue //
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