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Re: heater blows cold air in my escort van
I take it the water level in the expansion tank is ok. You could have a blocked core in the heater. Also the heater could be leaking. You could try flushing the cooling system and checking for leaks and blockages.
The yellow cable under dash has a wire coming out the end which fits into a little plastic arm,if this comes off you just get cold air,i have same prob but when i put it back in and turn knob it comes back out,i dont know how to fix it even though ive found the problem, Jules
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ford endure engine --- brilliant motors 12 th inlet 15 exhaust will suffice ,now if it was a D series even better still or a 2.4 yorkie transit ,remember when the first transits come out with a V4 2 litre engine ,they could outrun the police cars at the time ,they made an ideal bank raid tool not that i ever done anything like that i just tuned them up
if there is a bleeder screw by the goose neck or thermostat housing warm up the motor turn heater on full and slowly open the bleeder a little until only coolant come out no airotherwise take your coolant resavor cap off and run the engine until it warms up the squeeze the top hose 6-7 times make sure your coolant is full also you might have a bad thermostat hope this helps
hiya if you warm engine up to normal temp then check / feel the two heater hoses from engine up to the point of passing into the bulkhead ? if one hose is hot/warm? and the other is cold? the cold hose is the return from heater matrix(radiator) the problem you have is probably the heater coolant control valve failed? this is electric operated and not servicable but easy diy job to renew tou will find the plastic valve on the rear of bulknead behind where h/hoses pass thro you will have to remove the plastic grill below w/screen the h/hoses are connected to the valve along with elec plug connection pull off plug then with ignition and temp control valve on max check you have a live feed on wires to valve ? if no? check fuses if yes? then replace valve hope this helps it is not uncommon fault with these valves on escorts and fiestas