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renault clio 1.8 rt, heater wont warm up

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vipersnest24 | 23:01 Tue 16th Feb 2010 | Motoring
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hi please can someone help.............i have a renault clio 1.8 rt, my problem is the heater will only blow cold and wont warm up, my partner is knowledgeable about cars and after having the same problem with his shogun, he has put a new thermostat in.....but has not solved the problem. any help greatly appreciated.
thanks sara
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Then you need to
1. Check coolant is full and bleed properly (including those little Renault bleed points with plastic caps) Check feed pipe is getting hot to heater matrix.
2. Check it is NOT a water valve control heater (in other words .. an air blend heater) and look at the heater body cable control, it will probably be that. If you think it's water valve...
23:09 Tue 16th Feb 2010
Then you need to
1. Check coolant is full and bleed properly (including those little Renault bleed points with plastic caps) Check feed pipe is getting hot to heater matrix.
2. Check it is NOT a water valve control heater (in other words .. an air blend heater) and look at the heater body cable control, it will probably be that. If you think it's water valve heater, you need to look at this valve. This can be electronic (like BMW) or manual valve.
3. If you CANNOT achieve hot flow to the heater matrix, it will probably be a blocked water offtake on the head or manifold. Sometimes quite small orifice. This is unlikely, but I have seen it before.

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