What is an 'air doser' and why does my Citroen Berlingo need a new one?

I have been told I may have a sticky air doser on my 1.9 diesel Citroen Berlingo. What is an air doser and is it expensive to repair?

What's the minimum annual mileage I should cover in my Land Rover Freelander 2 to avoid DPF problems?

I notice that you have mentioned the need for new diesel vehicles to do a yearly minimum mileage when fitted with a particulate filter. The other week you quoted "15,000 miles per year'". No one mentioned...

Why is my dealer taking so long to repair my Nissan X-Trail's turbocharger?

I bought a May 2004 X-Trail 2.2 Sport DCI (136) back in 2005 from a fleet company with 16,000 on the clock. In 2006, just out of warranty, the fuel pump "split" and after a week of vague communication...

Where can I get a replacement turbocharger for my 2004 Ford Mondeo?

Where can I purchase the cheapest replacement turbocharger for my 2004 2.0-litre TDCI Ford Mondeo? Also, if I was mis-sold said Ford four years ago as never being in an accident or written off, but have...

Does my Citroen C5 have a turbo and is it causing a wheezing noise?

I've recently bought a Citroen C5 2.0 HDI VTR believing the wheezing noise was coming from the alternator, but a friend has now told me that it could be coming from the turbo. I disputed the fact that...

Do premium fuels de-coke turbochargers as well as injection components?

This is a very important question as many vehicle owners suffer sticking vanes in turbochargers due to carbon build-up, which is very expensive to fix. Do any of the super fuels (V-Power, Ultimate or Excellium)...

Does my Ford Galaxy have a turbocharger fault?

I pull a large caravan with my 2006 Ford Galaxy 1.9 TDI 115ps, within towing regulations. In France on a long hill, not overly steep, there was a big drop in power - it felt like the turbo dropped out....

I've fitted a new turbo to my 2004 Renault Scenic II 1.5 DCi but it's still smoking. Help!

Have had my Renault Scenic II since May this year. It's a 2004 1.5 DCI 80, and had 72,000 miles on it when I bought it and has 74,500 miles on it now. For most of that time, its been throwing white/blue...

Does my Vauxhall Cavalier have a turbocharger problem?

I have a 1994 Vauxhall Cavalier turbodiesel with a 1700cc Isuzu engine fitted. It has just passed the MOT but I have been having problems with the power. It pulls ok on the straight but when I go up any...

My Ford Focus' turbo wastegate is sticking open. Is there anything I can do other than replace it?

I am given to believe that the actuating rod on the turbo of our Ford Focus 1800 turbodiesel is sticking with the wastegate held open, causing the engine to run with greatly reduced power. I understand...