Ask Honest John

Most recently answered technical issues questions
Flashing DPF dasboard light came on at 23400 miles on 15/02/12. Mazda dealer diagnostic check showed that they had not reset the car computer(?) after the service in July 11, no actual fault with DPF....
Window washer water jet not making a sound and no water comes out. What's the problem?
I took the car to a ford dealer and connected it to a computer and they informed me that the car went into limp mode due to a turbo overboost, though when I drove the car, the temperature gauge began to...
Really bad smell coming from my exhaust. Have replaced fuel filter, EGR valve and exhaust flex (fumes were coming into the cabin but replacing flex cured this) and emissions are perfect but still bad smell....
I am having difficulty starting my Zafira when cold so I thought I would check my glow plugs. Unfortunately they are extremely tight! Garage friend has suggested having a go at them and if it goes wrong...
Ive discovered a large amount of oil in my water reservoir. My heaters also stopped working at the same time. I've been told the cooler is to blame and needs replacing plus a full flush. The mechanic...
I bought my 57 plate Passat 11 months old from main dealer, a Volkswagen demonstrator, serviced by them since. I have had major problems since day 1: Almost all major components have been replaced, ie...
My Golf TSI DSG will be three-years-old in May, with 19,000 miles. I am 73 and like my first automatic, but I am concerned it may fail. Each summer we drive to Greece - if the gearbox failed away from...
My remote locking on my 2007 Subaru has failed. Can I replace the batteries in the keys without paying the dealer an arm and a leg?
My Focus has a stuck spark plug which is causing a misfire.
 

Ask Honest John

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 10% on GAP Insurance

Use HJ10 to save on an ALA policy

See offer