Question about 2001 Ford Escort ZX2

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Heater blows cold on low revs

When on high revs it gets warmer also if i turn heater off then on it gets warm for a bit then goes cold again

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Try looking at the theromstat housing and check it very close for a hair line crack either when the engine is cold or hot. They have had problems with the housing getting a small hair line crack and leaking and getting air in the system. Also keep a close eye on the coolant and make sure its clean and full if there is any air in the system it wont heat great at idle when you are going down the road or idle it higher you have more coolant flow thus making it hotter.

Posted on Jan 06, 2009

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Posted on Jan 02, 2017

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Heater blows cold on low revs


check your coolant (antifreeze)level!
,not just in the holding tank,but the radiator also!!

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