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• VW Golf Mk2 Turbo Diesel Overheating? 27 Oct 2004 (Forum)
  The temperature/coolant level warning light is permanently illuminated on the dash of My VW, even when starting from cold. The coolant levels are ok and all the cooling electrical systems, fan and themoswitches are working correctly.
• Ford Focus 1.8 TDCI 2007 - Coolant Loss and visible signs of puddles 24 Jul 2016 (Forum)
  In the morning i came back and noticed it was low again i topped it up and i could see as i put water in the coolant tank: 1. Water dripping near the wheel looks directly under(ish) the coolant tank 2. Water dripping from the front slightly not by the gripp a bit more inwards the engine. Obviously i saw it dripping onto some oily parts but i couldnt see exact cause.
• Citroen Saxo coolant leak 2 Dec 2004 (Forum)
  Interesting experience to say the least - does anyone know whether the 1.1 Saxo should be using blue/green coolant or red coolant?
• Electrolysis corrosion 7 Aug 2002 (Forum)
  My scanner is on the blink so cannot reproduce the whole A4 sheet which details the simple test procedure for checking the coolant for an electrical charge but basically with a voltmeter on the range 0 -12v. with sensitivity of at least one-tenth of a volt with one test lead to battery ground and the other in the coolant (not touching any metal or the filler neck) Any voltage reading will indicate the presence of current through the coolant.
• Peugeot 306 (1993 - 2001) - 2001 2.0HDi Coolant loss from header tank 13 Mar 2009 (Forum)
  manifold pipe I can hear a hiss from the filler cap even though the coolant seems to coming from the (overflow?) pipe when it does leak. I want to keep hold of the car (last owner changed oil/filters etc every 10k, and it is in good nick) but if it is the head gasket will prob try and get money back from trader (only had the car a week) and they had been running it before selling so surley must've been aware of coolant loss??
• Ford Mondeo II (1996 - 2000) - 2000(X) 1.8TD running warm / hot coolant smell 18 Feb 2008 (Forum)
  Chaps, I'm getting a little worried about the Mondeo's cooling system which is dropping some hints recently that all is not well. It has the following symptoms: 1) Slight coolant loss. As in MAX to MIN on the expansion tank every 2,500-3,000 miles or so. 2) Whiffs of hot coolant particularly at the end of a long run when parking up, and when first getting out of the car.
• Ford Focus - Faulty Car (Small Claims Court or Not) 21 Aug 2018 (Forum)
  I said I would investigate and after investigating it was intact the coolant tank reservoir which I told him would need replacing plus a coolant replacement, I performed a simple coolant flush and changed the bottle which was quite simple and because I gave him a choice of a garage doing it or myself and he said he wanted to go with the cheaper option.
• MGF P Reg Coolant Overheating 9 Jun 2007 (Forum)
  I was not convinced so I got the AA out again, they did the tests again, the car passed again and with them following me, I drove 35 miles to another garage I had been recommended. They diagniosed a leak in the pipe taking the coolant from the back to the radiator. This was apparantly causing a loss of coolant, hence the problems. They changed the pipe, problem solved! But unfortunately it is not! The same thing has happaned twice again, I drive at speed, slow down, the temp gauge rises to just under half way, then steam comes out of the coolant tank!
• Vauxhall insignia SRI - Head gasket/coolant issue 21 Oct 2022 (Forum)
  I got my car back yesterday and there is now a trickling/liquid sound coming from the car. Doesnt seem like there are any oil leaks in the engine bay and it would appear the coolant is stable. I have also noticed that the engine appears to be very hot when you stop (have been checking for leaks etc periodically). Can anyone think what the issue might be? Im hoping the block isnt cracked but its about the only thing I can think of at this point?
• VW Passat - Heater not blowing hot air on full blast 11 Mar 2022 (Forum)
  Potentially could be a blown gasket but then surely the coolant level would decrease significantly. 
• Mercedies 2.1 CDI - Fuel Injector issue 28 Nov 2019 (Forum)
  Attempting to assist  a friend replacing the copper seal on fuel injector as it was puffing mist into the engine compartment while running. injector removed and evidence of leak past distorted  seal, dressed the seat in the head with correct tool, replaced  the injector using new copper washer and stretch bolt, torqued to correct figure and then the correct degree to tighten. on start, found to be the same and when stretch bolt was removed coolant started pouring out, re did the job with thicker washer and same again, transpires the mist being ejected is coolant. does anyone know why engine coolant would be pumping out the bolt hole, cracked head or cylinder head gasket blown?
• VW Golf 1.6 tdi - Cold radiator hoses and overheating?????????? 5 Jun 2018 (Forum)
  No warning lights Diagnostics measuring matches the temp guage overhating (120 degress) But driving wasy around town this never goes ove the 90 marks Coolant temp sensor, thermostat, water pump an secondary water pump all replaced at separate times and the bled air out properly each time.  Whenever I open the expansion bottle cap after driving, big whoosh noise and coolant trickles out The coolant level never drops in the car, when the hot cabin air is switched on it is very consistent until turned off, no drop of MPG
• mk5 fiesta facelift model - inlet manifold gasket leaking coolant 13 Feb 2014 (Forum)
  Hi all, Hoping you guys can help me out. Ive got a pretty fast  coolant leak which seems to be coming form the inlet manifolt gasket. Its on the drivers side at the back of the engine block, just behind the dipstick. I wouldn't mind having a crack at it myself to save a few £ and learn as ive only recently took aninterest in a bit of motoring DIY.
• Iveco daily van - Coolant system pressurized?? 31 Jan 2014 (Forum)
  Hi I am concerned about my van, I know this is a car forum but I'm sure it will apply to all diesel engines. My van - '08 plate, 110k, seems to lack a bit of power, expect it to have about 20% more, no coolant leak, temp is fine,no mix of water /oil or anything. Had a gasket sniff test done - came back ok. No waring lights on so this is why I'm worried it might be a head gasket/engine crack problem. Is the next stage to have a compression test?
• Renault scenic 1.4 16v kj4 - Scenic coolant temp sensor where is it located??? 17 Aug 2011 (Forum)
  Car starts first time and does not stall. Idle is fine no hunting etc... I unplugged what I thought was the coolant temp sensor on the side of the engine gearbox side, car started fine etc still had problem as mentioned above. All this seemed to do was stop the temp gauge on the dash working. Are there 2 sensors one for the gauge on the dash and one for the ecu??
• Ford focus tdci - coolant pressurisation 14 Oct 2010 (Forum)
  But, i have since realised that the cooling system is becoming pressureised as the water isn't hot and the water resavoir releif stopper is releasing the pressure and the coolant is now a rusty colour..... ive taken the car back to the garage that did the work but he is telling me he cant detect a problem......
• Rover 25 (1999 - 2005) - 02 1.4 temperature up and down 13 Sep 2009 (Forum)
  Gentlemen The engine on this is pretty solid and I had the cylinder head fixed by a trustworthy garage about 2 years ago. It has been losing coolant very slowly though, and I keep it topped up. Now it loses coolant more rapidly BUT the temp gauge has started going about four fifths to the top, then back to normal for about 10 minutes, then repeating.
• Ford Mondeo II (1996 - 2000) - 97 2.0 coolant leak 11 Aug 2009 (Forum)
  hi new here, just noticed a coolant leak , puddle under car after doing a 60 mile run, and another running drizzle from under car after 60 mile return journey, the temp guage hasnt been above mid way, no rough idel or running as yet, it did seem a little under powered after about 90 miles struggled a little up hill at 60mph it a zetec engine, auto gearbox cant see where leaking from but seems to be from rear of engine bay, havnt been able to get under it yet co i got a dodgy neck and cant move too well, any ideas?
• Citroen C5 (2001 - 2008) - 04 2.0 DIY coolant change advice 2 Feb 2009 (Forum)
  Hi All.I would like to do a coolant change and was wondering if somebody could talk me through the process.Never having done one on a C5 before,I thought it wise to check the correct method and make sure that the job was well done.
• Volkswagen Golf IV (1998 - 2004) - 99 2.0 Temp sensor issue 25 Apr 2008 (Forum)
  Have changed the coolant mix as well, but now at the limit of my capabilities. Are there any other sensors worth trying? Is there one in the coolant bottle that would trigger this light? One more thought, this started happening just after I got the speedo replaced due to it failing.