madman23 Posted September 25, 2013 Share Posted September 25, 2013 Hi im new to this. im just after a bit of advise as i have just got a 1998 ford mondeo estate. drove it home last night and was fine. started driving it today and noticed that the temperature gauge was going up to the letter A then cools down a bit then goes back up. Just need adise on what it could be. I'm hoping its nothing major :( Quote Link to comment Share on other sites More sharing options...
jeebowhite Posted September 25, 2013 Share Posted September 25, 2013 Could be q duff thermostat or blocked pipe, are the hoses and pipes equally hot in the engine bay... Quote Link to comment Share on other sites More sharing options...
btmaldon Posted September 25, 2013 Share Posted September 25, 2013 Also change the expansion tank cap, its probably not holding the pressure. Quote Link to comment Share on other sites More sharing options...
stooge75 Posted September 25, 2013 Share Posted September 25, 2013 sounds to me like a possible air-lock. might be worth seeing if it is,before buying a new thermostat & cap. Quote Link to comment Share on other sites More sharing options...
jeebowhite Posted September 26, 2013 Share Posted September 26, 2013 go with Bruce on this one, the cap is the cheapest fix, and one I should have remembered, a new cap is a few quid, a thermo and housing isnt! Quote Link to comment Share on other sites More sharing options...
madman23 Posted September 28, 2013 Author Share Posted September 28, 2013 the pipes are warm and even. drove it last night and started to get quiet warm in traffic as soon as i started driving and kept the revs below 2000rpm it started to cool right down to almost cold. as soon as i go above 2000rpm it starts getting warm again. im just hoping its not hg. thank u for the replies Quote Link to comment Share on other sites More sharing options...
stooge75 Posted September 28, 2013 Share Posted September 28, 2013 have you not found the problem yet? Quote Link to comment Share on other sites More sharing options...
madman23 Posted September 28, 2013 Author Share Posted September 28, 2013 No still have not found the problem. Quote Link to comment Share on other sites More sharing options...
mintalkin Posted September 28, 2013 Share Posted September 28, 2013 its showing the classic signs of a duff thermostat. Quote Link to comment Share on other sites More sharing options...
stooge75 Posted September 28, 2013 Share Posted September 28, 2013 yep-either stat or air-lock. Id replace the stat anyway if it was mines Quote Link to comment Share on other sites More sharing options...
madman23 Posted September 28, 2013 Author Share Posted September 28, 2013 ok ill get it changed asap.. I have another question but don't know where to post it lol Quote Link to comment Share on other sites More sharing options...
jeebowhite Posted September 30, 2013 Share Posted September 30, 2013 Post it to the appropriate forum :p so if its a mondeo question, post it in the mondeo section, if its a general question not specifically to the mondeo, the general Ford, or if its naff all to do with cars, the general chat :p Quote Link to comment Share on other sites More sharing options...
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