MK1 TUSCAN - FAN IS ALWAYS ON FULL BLAST!

[deadline21]

got in the tusc the other day for a wee evening spin having just had it serviced and half an hour into the drive the interior fans came on full blast over-riding all control of the fans- can't turn em up or down, switch on air con or change temperature. Switching the fan on and off makes no difference. When I switch the car off they go off - as soon as I turn the ignition on they come on full blast - pretty noisy and pretty cold!

anyone had this particular gremlin before!!

thanks!

s

[S6 Devil]

It may be the heater ECU needs a repair, I sent mine off for repair, cost £37 and was back in a couple of days. Mine however came on and went off intermittently so not the same problem but may be a similar fix. The ECU is under the passenger dash in case you didn't know. You could try unplugging and refitting. The company I used was:
Electroversal,
Unit 2,
Sedgwick Road,
Luton,
Beds,
LU4 9DT

TEL [phone]

Edited by S6 Devil on Wednesday 15th July 16:30

[deadline21]

strangely enough its just gone off and seems to be behaving itself! I think this sounds very likely to be the problem - will investigate further!

many many thanks - really helpful reply

cheers

s

[Chequred Demon]

If it becomes intermittent then try gently twisting/pulling/pushing the Heater ECU connector. The connector overheats and melts the plastic, causing all kinds of weird heater related issues.