Very odd issue.

 

The in-cab fan is either off, or full blast #4 speed, regardless where the dial is. Fuse issue?

 

It was fine, and suddenly has reduced its functionality. 

 

 

 

 

Usually a resistor (actually 3 in series)  that fails open circuit. Speed 4 bypasses the whole resistor thing, so is unaffected.

Not sure if I have any Caddy wiring info in order to check this theory, will have a look.

Don't have wiring from before 2003, but I think this may be the resistor: BLOWER RESISTOR VW SKODA 6U0 959 623 HEAVY DUTY OEM SKV GERMANY 5901947318751 | eBay

Wait for someone else to confirm that this could be the problem though, that's expensive to take a gamble with.

16 hours ago, Abaddon said:

#4 speed

 

1.9D should have 3 speed fan and different resistor - 6U0959263A - are you sure you have 4 speed one?

Haha!

 

Sorry, OFF, 1-2-3! 

 

So forth position.. but yes, 3 speed 

Good work @Papez. 

Sorry to hijack the thread here but can you tell me where the heater resistor is please as i need to give mine a clean.

thanks

Liam

2 hours ago, L17 LOB said:

Sorry to hijack the thread here but can you tell me where the heater resistor is please as i need to give mine a clean.

thanks

Liam

You mean the fan speed control? If so, then it's behind the temperature knob.