A few weeks back I bought a 2010 CDTi for £1000. I think it was involved in an accident at the passenger side as the passenger window does not work and the mirror adjustment is pretty wonky but the main issue is that the heating system does not work at all.
I've spent the past few weeks (slowly) troubleshooting and trying different things and I now think that the AC compressor is gubbed (I saw a post from September that mentions shimming or replacing it but I can't post any links just yet).
I'm not a mechanic, and this is the first time I've ever tried to do something to a car other than drive it, but here's what I've tried so far:
- I tested the fuses (7 and 36) and they work ok
- I replaced the AC relay in the bonnet fuse box but it didn't help—I can hear it clicking on, though
- I tested the blower motor resistor and it seemed fine—I replaced it anyway but it didn't help
The heating IS doing something. There's definitely a fan kicking in somewhere when I turn it on, just not the main blower motor at the left side of the clutch. You can hear it, though (I tried to record a video but it didn't pick up the subtle sound). Having read around on this forum a bit, I get the impression that the AC compressor (I think) is supposed to start turning whenever I turn the heating on (or is it just when I have the AC temp low?). This isn't happening. The main fans at the grill are turning when the engine is on and, when I drive it for a bit, hot air does come through the vents but it's very weak.
I'm just looking for any suggestions on the best way forward. I've sourced a replacement blower motor but I don't wanna drop the cash on it if it turns out to be the AC compressor that needs fixing. Any ideas on what to do next?
I have some videos to upload but, again, the forum won't let me because my post count is less than five!