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• 
  Whether forecast? 10 Sep 2011 (Ask HJ)
  Can you say what type of air condition makes a petrol/diesel engine more efficient? Cold air, warm, damp, dry - all variables that might affect fuel consumption...
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  Ford Galaxy won't start from the ignition 22 Jun 2011 (Ask HJ)
  My car won't start from the ignition key, however, can be started by putting power from the battery straight to the starter, which the AA did for me to...
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  Polo won't start 26 Apr 2011 (Ask HJ)
  I went to start my 1995 VW Polo this morning and the engine would not turn over at all, and the hazards would flash for around 20 seconds. The car is in...
• VW Golf 1.9 TDI 1999 - rear window leakage, no elec windows/central lock 19 Apr 2011 (Forum)
  Hi all. So i have a VW Golf 1.9 TDI 1999 and the other day the battery dies. so i got the AA out and they used thier booster to charge the battery and everything was fine until i realised 2 things. 1 - the electric windows do not work and 2 - the central locking does not work either.
• Peugeot 306 Hdi - Advise needed on diagnostic results 11 Nov 2010 (Forum)
    He suggested £280ish for the fuel regulator and around £100+ for an airflow sensor. The battery was bosch silver so was under its 5 year warranty. My question is do I need to get parts from the dealer only as the mechanic doesnt trust aftermarket parts? If not where should I be looking to get them.
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  Is there a known problem with the FIAT 500's stop-start system? 10 Oct 2010 (Ask HJ)
  Please can you tell me if you are aware of an engine management problem on the FIAT 500? I understand there have been a number of complaints. I have had...
• Ford Fiesta 1.25 Zetec (1997) - Fiesta 1.2 Uneven Idle problem 18 Sep 2010 (Forum)
  This problem started (or got very considerably worse) after we disconnected the battery to work on the elctric windows and then reconnected the battery. May be a red herring, but may be relevant? We have changed the temperature sensor , the plus and HT leads, and finally the Mass Airflow sensor.
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  Why is my Citroen C5's anti-pollution warning light coming on? 13 Sep 2010 (Ask HJ)
  My Citroen C5 1.8 LX petrol has developed a fault. As I was driving along the motorway the little orange engine symbol lit up. The car drives and functions...
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  Why have the power socket and cigar lighter in the rear of my 2007 Ford Mondeo have stopped working? 30 Aug 2010 (Ask HJ)
  For some reason, both the cigar lighter and the auxiliary power socket in the rear passenger area of my 2007 Ford Mondeo are not working. I have checked...
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  Woolley jumper 12 Mar 2010 (Ask HJ)
  As a regular subscriber to "The Daily Telegraph" I am rather confused this week. In the Saturday issue dated 9th January 2010 on page M13 of the motoring...
• Ford Probe (1994 - 1998) - 95 2.5 Electrical / water short 20 Nov 2009 (Forum)
  It ran fine as long as I didn't activate the indicators, which acted as a handy 'kill-switch.' It then gave up the ghost again 25 yards from my garage. The garage mechanic disconnected the battery and left it inside over the weekend. On Monday he went to examine what he and the AA man thought must be two wires rubbing in the steering column somewhere, reconnected the battery and hey presto, the headlights readjusted themselves and the car started first time, no problems.
• Rover 200 (1995 - 1999) - 97 2.0D - a rattle, then black smoke, then stopped 25 Aug 2009 (Forum)
  I left it and returned the next day and the resevoir was still full. I know it will need a new battery but have no expierience other than changing tyres as to fixing cars. Any ideas what may be wrong just to give me an idea of the possibilities I may be looking at would be appreciated. Thank you Matt PS: It's diesel if that has any relevance.
• Ford Fiesta (1989 - 1995) - 1993 1.1 - Starting problems 10 Mar 2009 (Forum)
  Engine turns over and you can hear it wants to go but won't catch and fire up even when I connect my jumpstart battery booster. Sometime if I leave it an hour it will start ok. Battery is good and spark is evident. Without exception if I tow it for a bump starts it starts ok after 25 yards and runs fine immediately.
• Citroen Berlingo Multispace (1998 - 2010) - 01 1.9 Got speedo working, but help 24 Sep 2008 (Forum)
  Fuse now fitted with a pushbutton to press before starting car, until I can resolve problem. When battery went flat during investigation speedo would sit just off end stop and work. This stopped when battery charged. Where is the speedo interface unit? is this built into the dash panel. There is not a direct connection between the black socket and the speedo meter movement on the dash panel.
• Renault Laguna (1994 - 2001) - 95 2.0 M Reg - Weird wiring explanation 21 Sep 2008 (Forum)
  Now I'm assuming the controls stopped working so someone hacked a wiring from the starter to the fan with a relay to stop it draining the battery and that the fan was therefore likely to be always on and hence burnt out? Thoughts? Is this normal wiring? Can I unhack it? Assuming a new fan is required regardless. Ta in advance M.
• FIAT Punto (1994 - 1999) - 55 SX 1108cc 97 R. Alarm/Immobiliser Problem 5 Aug 2008 (Forum)
  I charged my battery up full and tried again but still nothing. Can any of you guys help me out in what the problem coulf be? thanks Gaz
• Peugeot 307 SW (2002 - 2008) - 02 2.0 FAP Regen Electrical Issues 11 Apr 2008 (Forum)
  However when the relay clicks the head lights flicker briefly :( If I'm on the motorway the relay clicks and the lights flicker, this wouldn't be a problem if this just happened at the start of the regen process but the clicking continues many times whilst the regen is being carried out (probably for 12-30 miles). People have mentioned this maybe a battery issue which it maybe but before buying a new battery I'd like to get my mind clear why the relay would be clicking on and off a fair bit durring the regen and why in the past I never noticed it doing this.
• Citroen Xsara Picasso (2000 - 2010) - 2002 1.8 - Lambda probes 31 Mar 2008 (Forum)
  - How long can I drive with such a problem before I damage the cat? - Can the ecu be reset (the fault canceled) by disconnecting the battery, or does it need doing via diagnostics? I'm having trouble getting this from the garage who originally looked at the car. - (if this is falls foul of forum rules, please ignore and accept my apologies) is there a good place to purchase the probes?
• Isuzu - Tachograph - can anyone help? 1 Jan 2008 (Forum)
  I have a 1999 Isuzu NQR 7.5 ton lorry fitted with a horsebox body, used for private transport of our horses and taxed as private HGV. To prevent the batteries going flat when not in use we have an isolator fitted. When the isolator is screwed in (to make the connection) the speedo needle on the tachograph slowly goes from 0 round to maximum and stays there.
• Ford Fiesta (1989 - 1995) - 1993 1.1 - Starting Problems when Cold 29 Dec 2007 (Forum)
  Engine turns over and you can hear it wants to go but won't catch and fire up even when I connect my jumpstart battery booster. Sometime if I leave it an hour it will start ok. Battery is good and spark is evident. When it does start it immediately ticks over and runs perfectly. If I tow it for a bump starts it starts ok and runs fine and seems to restart fine when the engine is warm.