truckercol Posted December 8, 2010 Share Posted December 8, 2010 I have a 2001 fiesta 1.9 td and have replaced the thermostat and the heater control valve but the heater is still very poor. If you drive the car normally and don't put the heater fan on then heat does come through but the min you put the fan on the heater starts to cool down rapidly and the heater goes stone cold. If you rev the engine to full throttle the heat will start to come through again. I am now wondering if it's the water pump. Thanks for any help given Quote Link to comment Share on other sites More sharing options...
grin factor Posted December 8, 2010 Share Posted December 8, 2010 Has it always been like this, or have you done something like change the rad water/anti freeze? It could be an air lock in the heater element Quote Link to comment Share on other sites More sharing options...
truckercol Posted December 9, 2010 Author Share Posted December 9, 2010 It has a;ways been like this and its not getting any better. I have tried everything I can think of but the heater is very poor under load. I am strongly suspecting the water pump. The car temp runs in the middle of temp gauge and never over heats but yet the bottom hose on rad is not as hot as it should be so suspect pump. I know its a git to change as the timming belt needs to be removed. Thanks Quote Link to comment Share on other sites More sharing options...
grin factor Posted December 9, 2010 Share Posted December 9, 2010 Don't think its the pump mate, or the engine would overheat and judging by the guage its fine. I still think the problem lies with the heater itself, but may be wrong Quote Link to comment Share on other sites More sharing options...
tommy.h Posted December 9, 2010 Share Posted December 9, 2010 Hi Grinfactor don't know if this helps. but may be worth a look. all models are affected PROBLEM low heater output heater blows cold at idle CAUSE reduced flow of coolantthrough engine oil cooler REMEDY renew engine oil cooler was going to post an attachment but for some reason can't tom Quote Link to comment Share on other sites More sharing options...
truckercol Posted December 10, 2010 Author Share Posted December 10, 2010 Thanks guys. I foned the stealers and they want £260 + vat so not an option. I have also read that its possible to bypass the oil cooler and feed the heater direct but not sure if this is wise. I will try the bypass just to see if the problem is with the cooler. Thanks all Quote Link to comment Share on other sites More sharing options...
moghm Posted December 14, 2010 Share Posted December 14, 2010 I have the exact same car I think, W reg, 18TD, is urs the same ? Having the same problem, new coolant, thermostat, heater control valve, heater output poor. Just seems like car isnt getting hot. Would be interesting to know if the bypass indicates the oil cooler problem. How r u getting on ? Quote Link to comment Share on other sites More sharing options...
truckercol Posted December 21, 2010 Author Share Posted December 21, 2010 Hi My car is the 1.9td 2000 on a Y. I bypassed the oil cooler and hey presto the heater is working a treat. Even at idle the heater still blows hot air and only cools as the water temp drops which is perfectly normal. Just hope the oil cooler is ok without getting any water. In this weather I think its not a problem. Thanks evryone for their help its been much appreciated. Quote Link to comment Share on other sites More sharing options...
moghm Posted December 22, 2010 Share Posted December 22, 2010 wow. So how do you bypass the oil cooler ? any instructions would be much appreciated. Quote Link to comment Share on other sites More sharing options...
truckercol Posted December 22, 2010 Author Share Posted December 22, 2010 Follow the pipe from the heater matrix down to the oil cooler on the rear of the engine near the bulk head. At the oil cooler the pipe from the heater matrix goes on one side and there is a pipe on the other side which leads away to the radiator. Remove both pipes from the oil cooler and insert a 15mm copper water pipe between the two rubber hoses that you removed from the oil cooler and jubilee clip both ends onto the copper pipe. Top up radiator with anti-freeze and check for leaks. This cured my problem and car is toastie. Col Quote Link to comment Share on other sites More sharing options...
moghm Posted December 22, 2010 Share Posted December 22, 2010 many thanks for the info. So, what do you think the bottle neck is at the oil cooler end, is it not letting the coolant through ? I am thinking there must be a reason for letting the coolant pass through there i.e. cool the oil. Am thnking that maybe it needs a flush or something ? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Ford UK Shop
Sponsored Ad
Name: eBay
Ford Model: FordUK Shop
Ford Year: 2024
Latest Deals
Ford UK Shop for genuine Ford parts & accessoriesDisclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.