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• 
  Pop idle 9 Jan 2010 (Ask HJ)
  What is the technical reason for suggesting that turbos are allowed to idle for a couple of minutes before switch-off, and does this apply only after a...
• Vauxhall Astra G Coupe/Convertible (2000 - 2004) - 02 2.2 Misfiring 4 Jan 2010 (Forum)
  I tried to start the car, the car turned over and started but then cut out. I tried again and again but still the same thing was happeneing. The car was low on fuel though. I pushed the car off the slight incline it was on the the car started. There was a slight knocking when the car was turning over. When the car started, it was knocking slightly but was running on 3 cylinders and really flat.
• Another New Car Choice Query 25 Nov 2009 (Forum)
  She would like a more fuel efficient vehicle and is very keen on the new Ford Fiesta 1.4 Zetec. It has similiar fittings to her Mondeo, such as heated windscreen and trip computer etc., all items which she is keen to retain in a new car.
• Peugeot 309 (1986 - 1993) - 89 1.9 losing water/coolant 15 Nov 2009 (Forum)
  Bought my car(diesel) just over a year ago - have done 200 thousand miles last year (total mileage now about 180), changed exhaust, alternator, fuel pump, just passed my MOT & paid new tax. Only issues I've really had are stupidly put in petrol late one night & drove it all the way home - got it cleaned out but since then it hasn't burnt fuel as well, and water leaking into boot (advice on this forum was bang on).
• Toyota Camry (2002 - 2006) - 03 .65 A number of questions? 15 Nov 2009 (Forum)
  Where can I get a good outdoor gauge from - I've only seen interior ones for cars online? Q6. Where can I buy a code reader for my car at a reasonable price? Q7. How can fuel be siphoned out of a car fuel tank safely and without causing air bubles in the system. Sorry I have so many questions. I look forward to your input into this: very much appreciated. Greg
• 
  Honest engine? 31 Oct 2009 (Ask HJ)
  I would be pleased to receive any thoughts/comments you have to make about the Seat Leon engines available. My choice appears to be between a 1.4TSi SE...
• Toyota Avensis (2003 - 2008) - 2001 1.8VVTi Co2 emission fail 16 Aug 2009 (Forum)
  This is my dads car so not aware of the full details, basically car failed mot due to tester refusing to continue because of blue smoke and emissions being well above limit anyway. Car has been with a Toyota main dealer for a week and they are stumped. Fuel filter has been changed and improved emissions but still over the limit. Exhaust and Cat have been swapped temporarily and not fixed the problem. Injectors have been checked and are ok. the actual fuel has been checked - I think.
• 
  Graduated person 27 Jun 2009 (Ask HJ)
  Our daughter is a 21-year-old student in Manchester. She passed her test 2 years ago and also carried out and passed the advanced motorway driving test...
• 
  Oars chestnut 20 Jun 2009 (Ask HJ)
  What should I buy? I need enough room for a pair of oars and outboard engine. Good fuel economy. Ability to tow 2 laser dinghies. Lowish road tax. Cruise...
• Peugeot 405 Diesel (1988 - 1996) - 92 1.9 Leak around injector pump throttle shaft 10 Jun 2009 (Forum)
  I can only assume that the problem was caused by the Haynes manual instruction to turn the engine over twice by hand, as the fuel cutoff valve would not be open and there could be pressure buildup in the low pressure side of the pump. Still don't understand how running the engine for 30 minutes made it all OK. However I now believe that magic is an acceptable engineering approach!
• 
  Fusion feud 16 May 2009 (Ask HJ)
  I have a 2007 Ford Fusion 1.6 TDCi Zetec. I am quite pleased with the car, particularly the fuel economy, (around 60 mpg at the moment) and the car has...
• Peugeot 307 (2001 - 2007) - 03 2.0HDi - refuses to start. 5 May 2009 (Forum)
  Pug has now decided to just randomly cut out on me and refuse to start again it went to garage and from what they found was faulty wiring to fuel pump so no diesel was getting pumped through ????? Plus couple of things eg new fuse.yes it started yes it ran for the total of 7 days in which it decided to randomly stop and not want to start again........luckly i just happened to of broken down outside a man who knows a bit about cars,.....this very nice man asked if i was ok and with blood pressure at max i really didnt want to state the obvious.....explained briefly what i knew about 7 days previous he did the on off on off thing etc and said it looks as if your fuel pump aint kicking in love !!!!!
• Mercedes Benz E-Class W124 (1985 - 2000) - 91 2.0 irratic idle 11 Apr 2009 (Forum)
  Sometimes she drives ok but always idles really roughly. I have changed the dizzy cap and rota arm and was told the previous owner had the fuel distributer and fuel filter changed all to no avail. I have also tried a new idle control valve again to no avail. I have since re fitted the original valve but was wondering which way round it went??
• Ford Mondeo III (2000 - 2007) - 02 2.0 TDCI 130 GHIA X cut out in traffic / batter 9 Apr 2009 (Forum)
  Hope this post will be of use to someone - car just stopped in traffic in outside lane. breakdown assistance could not jump start. Suggested fuel pump problem. Recovered on lorry home a few hours later. Get my mechanic friend over next Morning and get battery charged and guess what car starts first time. We now think that maybe we left the lights on etc which would explain why the battery got drained as had checked altenator and was ok.
• 
  Eco worrier 17 Jan 2009 (Ask HJ)
  I have just bought a 2004 manual BMW 320 diesel ES Tourer. I switched on the computer at the start of a run largely in 6th gear of 130 motorway miles....
• Renault Clio II (1998 - 2001) - 99 1.2 electric problem with dashboard 14 Nov 2008 (Forum)
  Appologies for my ignorance regarding cars and engines :) Ever since weve been having colder nights ive been going to start the car in the morning and as the ignition is turned (be it starting the engine or not) both the fuel gage and engine temp gage etc will rise to indicate a level of measurement and then suddenly they will fall to zero and then rise again. As in, the needle on the fuel gage will shoot to the top then the lights will go out on the dasboard, the needle will fall to the bottom, and then come back and rise to full etc seconds later.
• Peugeot 406 (1999 - 2004) - 01 2.2 hdi shuts down and problems starting 18 Oct 2008 (Forum)
  I think it has something to do with the fuel either when firing up or when asking for more but I am not sure. Bit scary as you lose confidence any ideas to what could be causing problem Cheers in advance
• Toyota Avensis (2003 - 2008) - Diesel fuel economy - what's happening? 8 Sep 2008 (Forum)
  I've averaged about 35 mpg in my diesel Avensis over the last 3,500 miles (6,500 to 10,000). I thought it must be my style of driving - heavyish right...
• SEAT Toledo III (2005 - ) - 07 2.0D Economy is poor. 2 Sep 2008 (Forum)
  At the weekend, he did a motorway section on cruise at 70mph, and the vehicle was averaging only 37mpg at that speed, by the time he had covered a few more off motorway miles and got to his destination, he had just managed to get the average up to 40. He has checked the fuel computer and is convinced its accurate, i assume by brimming and comparing. Seat have had the car back and can find nothing wrong, but they do say that a customer who bought the sister vehicle to my friends is complaining of his fuel consumption too.
• Jaguar XJ8 and XJR8 (1997 - 2003) - 99 3.2 Odd emissions problem 7 Aug 2008 (Forum)
  Upstream HO2Ss are working OK - output checked and then substituted with known good ones. MAF checked - not sure exactly how, but told it was OK. Fuel rail pressure checked. TPS checked. Car isn't burning oil and fuel trim levels OK but were reset just in case. The output from the downstream HO2Ss appears to be OK but they're going to try substituting with new units tomorrow.