Most recently answered technical issues questions
The air-con in my car seems to have lost its cooling effect. The output is quite warm, in fact. I'm being advised to have the system re-gassed. What does this mean and why should it be necessary, please?...
The ABS/ESP on my 56-plate Skoda Octavia 2.0 FSI failed at 32,000 miles, four months out of manufacturer's warranty and just eleven days after the expiry of the one-year used-car dealership warranty. I...
One month after the 3 year warranty expired on my wife's MINI Cooper S, and after 13,000 miles three warning lights appeared on the console. The manual identified this combination of lights as "Vehicle...
My local Mercedes service centre quoted £450 for a B service to my 28,000 mile 2002 C220CDI auto. This seams excessive. Another local servicing garage has quoted £320 using all Mercedes components, and...
I understand you have recently written on the subject of DPFs. My particular experience of the current X-Trail diesel (and my ongoing quarrel with Nissan) is that the first time the warning light came...
How can I tell when my diesel particulate filter needs its 'automatic regeneration process' "supporting"? I don't wish to unnecessarily drive in lower gears and raise my fuel consumption. I typically...
We have a 2006 Ford Transit Connect which passed its MOT two days ago, but now it has no power. It feels as if there is no boost from the turbo. I've checked all intercooler hoses and found them to be...
I'm after information regarding my 1.7 VCT Ford Puma. I have had bad running issues for some time now. Basically, when I start the car from cold the engine revs up to around 3000rpm and slowly settles...
My 1.9 2003 Renault Kangoo diesel hesitates at idle speed and produces excessive smoke. I removed the EGR plug and its now working fine. Which sensor gives info to EGR and computer?
I have a 2002 Fiat Punto on which I have replaced the head gasket and timing belt. I aligned the belt to the specified marks in the book but the engine won't fire. It's just popping through the carb. Is...

