benscab Posted February 25, 2009 Share Posted February 25, 2009 my mondeos heater seems to just work as and when it wants. sometimes the temp guage needle goes up (then heater works) and sometimes needle goes nowhere (then heater doesnt work. its a 2001 51 plate 2 litre petrol. Quote Link to comment Share on other sites More sharing options...
gaz6076 Posted February 25, 2009 Share Posted February 25, 2009 Blocked heater matrix? Quote Link to comment Share on other sites More sharing options...
benscab Posted February 25, 2009 Author Share Posted February 25, 2009 is that easily fixed by a novice ?? Quote Link to comment Share on other sites More sharing options...
gaz6076 Posted February 25, 2009 Share Posted February 25, 2009 You will need to drain the cooling system. Best way of doing that is by removing the pipe at the bottom of the radiator. Not sure exactly where or how easy is its to get to on the mondeos but at the bulkhead you should see to pipes leading into the car. Be roughly in the middle. You need to remove them as well. The best way I've found to unblock it its to force water down where you removed one of the pipes and see if it comes out the other one. Don't put too high a pressure in there though or you could damage something. The sort of pressure you would get by sticking your thumb over the end of a garden hose. I've used a pressure washer before but at a distance Wouldn't recommend you doing this though. After removing any blockage connect all the pipes back up and fill the coolant back up. Leave the cap of and let the engine warm up to let it bleed out. Quote Link to comment Share on other sites More sharing options...
benscab Posted February 27, 2009 Author Share Posted February 27, 2009 STILL NO SOLUTION TO MY PROBLEM.......... DOES ANYONE ELSE HAVE ANY IDEAS ????? Quote Link to comment Share on other sites More sharing options...
SierraYankee99 Posted February 27, 2009 Share Posted February 27, 2009 Thermostat sticking? Quote Link to comment Share on other sites More sharing options...
gaz6076 Posted February 27, 2009 Share Posted February 27, 2009 Thermostat sticking? Could be... benscab, did you try unblocking the matrix? Quote Link to comment Share on other sites More sharing options...
benscab Posted February 27, 2009 Author Share Posted February 27, 2009 waiting for a mate of mine coming over as im not confident enoug to do it myself,just trying to get as much info as possible for him before he gets here. Quote Link to comment Share on other sites More sharing options...
SierraYankee99 Posted February 27, 2009 Share Posted February 27, 2009 From my old mondeo days I remember there was an issue with Mk1s that when you turned left the heaters blew cold, turn right and they blew red hot. Cant for the life of me remember the cause of it though I do remember Ford didnt have a clue. Got a funny feeling it meant a new heater matrix though, wasnt as simple as being blocked. Quote Link to comment Share on other sites More sharing options...
gaz6076 Posted February 27, 2009 Share Posted February 27, 2009 I would try a new thermostat first as there quite cheap. Not sure how easy they are to change on the mondeos though Quote Link to comment Share on other sites More sharing options...
SierraYankee99 Posted February 27, 2009 Share Posted February 27, 2009 I agree, not something I've done on a mondeo but the matrix is a pain in the !Removed! to do and not cheap. Quote Link to comment Share on other sites More sharing options...
gaz6076 Posted February 27, 2009 Share Posted February 27, 2009 If your just going to try see if its blocked and then unblocking it, its not that difficult. Just a bit messy. Lol Depends where the thermostat is located on whether is worth trying is first Quote Link to comment Share on other sites More sharing options...
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