Ask Honest John

Most recently answered technical issues questions
I run a 2005 Vauxhall Vectra 1.9CDTI 120 as a taxi, purchased new. The dual mass flywheel was replaced under warranty at 42,000 miles, and has just been replaced at 102,000 miles, at £1,000 it is an expensive...
My son has a 37-month-old SAAB 9-3 1.9 diesel that has done 30k+ miles. He bought it at 12 months old from Gordon Lamb Saab in Sheffield, which as since gone out of SAAB dealership. He has had it serviced...
While driving in town quite normally, my 2005 Citroen C4 2L HDI 40k miles, suddenly over-revved, revved up and down a few times, revved incredibly highly and then promptly stopped and wouldn't restart....
Something weird is happening to my 1993K Volvo 940 2.3 turbo estate. I'd be grateful for your help in identifying what has gone wrong and how to put it right - if that's possible and economically worth...
How can I reduce the cost of recalibrating my keyfob, which locks the car but will not open it? The battery is new. The main Mazda dealer, who is 30 miles away wants around £90 to fix it.
Does you know why the car alarm keeps going off when the car is parked and locked.
I have an Alfa Romeo 159 Sportback 1.9 JTDm 16v. Recently a warning message appeared stating "Pollution Filter Clogged". The garage tells me this happens if the car has been driven at low revs in traffic...
I have a 5-year-old Mercedes A140 with only 37,000 miles on it. I bought it at less than a year old from the Mercedes dealer. I have now been told that I need a new gearbox at £4,000. I feel I should sue...
I have recently been widowed and my husband always used to check our car's "vital signs" as he termed it. My simple query is how often should I check the oil, brake fluid, etc. and also how often should...
My sister and brother-in-law bought an M-reg VW T4 transporter about three months ago, in order to take a road trip around Western and Eastern Europe. It was originally a minibus, but the (private) seller...