Ask Honest John

Most recently answered technical issues questions
Last year my Nissan Micra had a problem with ABS and corroded wiring. Estimate £2000. After much to-ing and fro-ing Nissan agreed to authorise a fix on goodwill. Eight months later the car developed the...
I have a Fiat Stilo 1.9 JTD that will start OK but will not rev up. I have changed the EGR valve and throttle pedal to no effect. Can anyone help me?
I have a Mondeo Mk4 TDCI which has more than 110K miles on the clock. Although the majority of my driving is on the motorway, I’m conscious that I’m likely to be having DPF problems before long. Is there...
There seems to be a problem with the locking system. Battery was bought new 10/09/12. Alternator belt 'went' and battery dead as a dodo 03/03/13. Alternator drive/serpentine belt replaced, power steering...
My engine managment light as come on in my car and it says on my dash "antipollution fault." It's a Peugeot 307.
I have owned an 07 BMW 320D Sport Tourer Auto from new. Until last Autumn, I was averaging 37mpg. This has fallen over the winter to 24mpg in town and 34mpg on open road. There are no significant indications...
I have a Mazda with a 1.4i CVH. The problem is over-fueling. Which sensors should be at fault and what engine would be compatible to fit the gear box?
Lorry started as usual, then a mile down the road it cut out. Won't start now - any ideas?
I own a VW Passat 1.9TDI S estate on an 07 plate. It has 104,000 on the clock. It is regularly serviced and I do about 18,000 miles a year. The car is an ex fleet car which had 50k on the clock when I...
I purchased a new Bentley Continental GTC in July 2010. The car suffered numerous problems from the off, initially with fuel pump problems, various electrical issues and then corrosion of the alloy wheels...