Ask Honest John

Most recently answered electrical faults questions
My father-in-law owns a 1998 Saab 9000 2-litre saloon. He has owned it from new and it has only done 30,000 miles. Over recent years the batteries in the keyfobs have consistently run out every six months...
I own a 2006 Volvo XC70 Cross Country AWD Estate fitted with a 2.4-litre 185bhp 5-cylinder diesel engine. It has just completed 100,000 miles. During a trip last week a yellow warning triangle appeared...
The power steering on my 30,000 mile 2006 Nissan Micra failed last November. I sent the unit to ECU Testing Ltd in Derbyshire to be repaired as they offered a lifetime warranty. The unit then failed again...
Regarding the letter from WR of Grays in, we had a similar problem with our Scenic. I took it to our local Renault agent, who, after four visits and two components changed, charged me £575. The problem...
Last winter the heated rear screen stopped working in our 2006 Ford Mondeo - the 30A fuse had blown. I fitted a replacement (JCASE female type) but when the screen was turned on the fuse blew again. The...
I have a 2003 Mercedes-Benz V220 CDi. It has developed some kind of electrical fault that two Mercedes garages have failed to solve. Basically the battery discharges if left unused for a period of time...
I have a 2008 Jaguar S-Type 2.7 diesel with 27,000 miles on the clock. Of late it seems to me that the radiator fan operates much too frequently, almost always when the car stops for traffic lights, when...
I have recently changed the engine in my 2004 Vauxhall Corsa C, engine Z12XE. The car runs fine, but the mechanic who replaced the engine (very reliable and knowledgeable mechanic) could not for the life...
I own a 2007 Saab 9-3, which has been very reliable until recently when an ESP fault developed. This was traced to the steering angle sensor, which is integral to a bigger unit called the "CIM" unit. So...
You were kind enough late last year to answer my query regarding the larger engine size required to replace a failed engine in my granddaughters 1974 Volkswagen camper van. It was bought and fitted by...