heater blower problems continue

scooters · Post by **scooters** » Thu Dec 01, 2011 5:07 pm

Yesterday evening I took the BX from Edinburgh to Stirling so the Mrs could collect the replacment for the family car- another Scoob Legacy estate,

It turned out to be a foul night - we have had some serious storms up here for the last week or so and it was no exception - freezinf sleet and torrential rain with very strong (throw you across the motorway type) gusts.

So it was a wipers on full, lights on, heater on and blower on full.

Now there is an earth fault in my blower circuit so that I have had to bridge earth termals 3 and 4 on the PCB. I have uet to carry out the full power PCB mod.

Anyway, blower packed in again - I have yet to check out the fault - the PCB is a recent good replacement...any immediate thoughts - BTW I bench tested the motor last month and the integrity of the wiring loom from blower motor to PCB. The relay on the steering column is working ok.

I suspecy the earthing problems are getting worse - anyone know where the PCB eventually earths to?

Post by **Defender110** » Thu Dec 01, 2011 9:29 pm

I have had to do the earthing bridge mod and when I was doing it I did wonder how long the new earth track would last before burning out like the original. If it is the new earth track I assume you will have lost your heater control illumination now?

Post by **mat_fenwick** » Fri Dec 02, 2011 12:01 am

As a temporary(?) repair to prove or disprove the earth, run a decent wire to pin 3 on the multiplug and the other end to a good earth. There is an earthing point under the passenger seat next to the console but from memory the PCB is earthed through the bulkhead to a point just below the battery

I've done the temporary bodge on a couple of BXs for people, just to get them going. Up to you whether you then want to do a proper job afterwards...

scooters · Post by **scooters** » Sat Dec 03, 2011 7:57 am

mat_fenwick wrote:As a temporary(?) repair to prove or disprove the earth, run a decent wire to pin 3 on the multiplug and the other end to a good earth. There is an earthing point under the passenger seat next to the console but from memory the PCB is earthed through the bulkhead to a point just below the battery

I've done the temporary bodge on a couple of BXs for people, just to get them going. Up to you whether you then want to do a proper job afterwards...

Thanks

Given the dismal lothian winter the blower is essential so I think your solution is the best for longevity..it would be nice to have lights as well for the heate.. Ill have a look at this later today