For a while now, I've been trying to diagnose a problem with my fuel pump (on my Mk1 Golf). Sometimes it doesn't start.
I've replaced the fuse, relay and the pump its self, but have still had the problem.
Out of frustration, I dis-mounted the fuse box and looked behind it to see if anything was out of sorts. It was a rats nest of wires but I just made sure that every clip and plug was pushed into its socket tight and securely. Tried the car one more time and it fired up straight away!
So, there is obviously something wrong with the connections going into the back of the fuse box. Question is, how can I clean and secure them without taking the whole thing apart (definitely not confident enough to do that!). Should I use compressed air to clean each socket and plug? Is there some other technique or tool I can use?