The Story goes:
One morning my Xsara wouldn't start... It's a year 2000 1.6i petrol with
AL4 transmission. The sport and snow lights were flashing in the
instrument panel indicating that there's a problem with the transmission
The Mechanic at Citroen couldn't connect his computer to the transmition
ECU and it was dead! He then put a new AL4 ECU and sent me on my way.
A few days after the problem reacurred, but this time, after a minute it
was gone and the car started normaly. I went back to the shop where they
connected the diagnostics computer and found no faults at all. They then
proceeded to check the cables and connectors between the ECUs for damage.
They removed the battery and lo and behold Ė a pool of acid and corrosion
all over under battery area and on top of the cables, eating away the
insulation and getting into the connectors. It's a miracle the car ran at
all. The funny thing is that the top of the battery looked clean and tide
with no noticeable corrosion. He thoroughly cleaned and covered the cables
with a new coat of insulation and fitted a new battery.
After a few days the same problem is back again, but not regulary!!!
sometimes the car starts normally, somtimes it doesn't.
Does anybody have experience with this fenomenon? I don't think the dealer
really knows this problem and how to fix it (more importantly - what causes
it) because the ECU doesn't show any faults.