A friend of mine has a fault with his AC, which having been regassed, has apparently been traced to a crack in the fuse board that sits on top of the battery. When this is temporarily bridged, the AC works again but no lasting fix has been found - other than replacing it.

 

So, my questions are:-

 

1 - Has anyone had this problem before, and can verify that the above diagnosis is plausible?

2 - Are the parts the same across the mk1 range? His is a 1.9tdi, so I wanted to make sure it wasn't, for example, a different unit in use for a 1.8T.

 

thanks

 

Martin

Are you sure the blade metal fuse itself has not hairline cracked?.

 

Fuseboxes are well known for melting, but not really for cracking.

 

Basically one side of the box is a solid distribution bar, and the other is a row of trapped individual bolts to distribute the power to that circuit through the fuse blade, so not a real lot to crack as such apart from the fuse itself.

Edited 12 July, 20169 yr by kentphil1

I haven't seen the car in a while, tbh. Anything is possible.

I haven't seen the car in a while, tbh. Anything is possible.

I've never heard of one cracking, melting yes, cracking no. Anything could be possible though. The actual box does differ slightly accros the models, just get one from a Tdi and should be fine.

The actual fuseable links are known to suffer with hairline cracking this leads to a high resistance and low volts for the units, (normally the ABS gives a low voltage fault code)