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Another MOT at end of November. Tempus fugit and all that. Half decent Yokohamas on the front need replacing as they have worn on the outside edge after 11k miles even though I'm a wee bit regular when it comes to checking tyre pressures. No knocking or steering issues are noticable at this stage so Im wondering if the C8 is just hard on front tyres? Ah well, money will sort it out, however..........the heater fan is blowing intermittently. On high setting its loud and reassuring but then it stops for a second or two before resuming. Does the same when aircon is on. I have not changed my heater/aircon habits and this hasn't happened before so I don't think it is meant to work that way? Started around 2 weeks ago. I doubt its going to get better on its own. I am not sure where to begin looking for the source of the fault and I will gratefully accept any suggestions that might steer me in the right direction (no, I can't keep it switched off, the kids will freeze and I won't be able to see through the steamy windows!). Thanks for reading. *crosses fingers and hopes for an easy and cheap fix.........

Just joined today! Prompted by heater/aircon Blower malfunction. C5 is 2013 "connected" model. Have it just three weeks after changing my old 2005 C5 that never gave any instrument or "comfort" faults! First noticed when I pressed the windscreen demist boost. Although all lamps light up and respond on the Mono Zone Digital Air conditioning panel, there is no sound from the Blower even when turned up high. Have checked Fuse 11 Air conditioning Blower (40A) under the bonnet and it's intact. Doing some Google searches mentions a Resistor Box as possible cause... Does anybody have any suggestions? Many Thanks

I have a 2013 C3 Picasso Exclusive with the 1.6VTi 120 engine and EGS6 gearbox. Recently, I've noticed the cabin heating is....pathetic..... with lukewarm air coming from the vents with the knob set to "Hi" , the blue engine temperature warning lamp takes about 8 times as far to go out as it used to (12miles as opposed to 1.5) and the Mpg figure has dropped from a lousy 43mpg to a catastrophic 38mpg. I believe the engine is not getting to the correct temperature and the engine is running rich as a result, the cabin heater isn't being fed with water hot enough. This suggests a problem with the thermostat. I've had the car back to Quest Motors at Maldon, twice, but they've reported NFF. There was a row. What problem would give a correct diagnostic reading but result in low engine temperature? Anyone?

hi i have a c5 2002 2.0 hdi with manual temperature control with aircon. the aircon gives a high pitched whine when its going to work then about 30secs later starts blowing cold air for a few minutes then starts blowing warm air. it has got plenty of gas in the system i have checked it with a pressure gauge when the system has been on a long while about 1 hour the pressure reeds very high about double what it should be when cold pressure reeds ok. anyone got any ideas to help me?? many thanks mark

Hi I'm having problems with my C5's (58 plate 2.0 HDI tourer) aircon. I took it to be serviced a couple of weeks ago, and the garage was unable to get it going. It's got a full charge of coolant, but the compressor clutch refuses to engage. I spent about an hour with my mechanic trying to find the fault, but we didn't get very far. He suggested I might do some research online, so here I am! :) We hooked it up to his 'snap-on' diagnostics machine and were able to actuate the compressor clutch manually (but only when the engine wasn't running). There was one sensor value that looked way off and could be to blame. IIRC it was the 'exterior air temperature' value that was reading 158 degrees Fahrenheit. Does the car have a second external air temperature sensor just for the aircon? (because the outside temperature as displayed on the satnav is fine). I bought a citroen service manual off ebay and have been trying to study the exploded diagrams, but it's not at all obvious. Many thanks for your help, Alex