Sorry if i am going to say stuff i already have but...........
Just for clarity so when i read this back i understand it L/H and R/H fans are from looking at them from the front of the car
The R/H fans appears to be a little weak, whilst the L/H fan spins up the R/H needs a little nudge to start, after that it spins up the same as the R/H with the Blue stat plug removed, tried it 6 or 7 times and once after the first nudge it no longer needs any help to spin up, they both go full pelt.
However both fans will only spin at full speed, tried the bridge trick on the dryer/receiver and both full speed.
So Relays are working, power is getting to them the issue now is why no slow speed.
And then i remembered the following, i even replied but missed the point totally
So yes i can get them to run at full speed but i need to get them to run at slow speed, so maybe 2 ways of doing it ?
1. Have the A/C on
2. Get it upto temp to trigger it.
1. A/C does not work need,to get it regassed/pressure checked but need fans working to make sure the the compressor engages ?
2. Bit late for a sunny Sunday afternoon to sit and rev the nuts out of it, HDI never gets above 80 ish even on a long drive
So off to work tomorrow morning early and going to sit in the empty car park and see if i can get the temp up a bit over 90
So as for the STOP and Over temp light flashing when interior blower is set to demist, now i have changed the 3 relays and cleaned up contacts what was an intermittent issue i can recreate it at will by putting blower on and set to demist, move setting to anything but demist it goes away,move it back to demist and within 10 secs it starts flashing again.
My apologies and thanks in equal measures to everyone who has helped me get this far, fingers crossed i was chasing a fault that never existed, knowing my luck it wont be that simple but......