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Engine doesn't warm up


oliverlesauvage
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Hi,

My engine does not warm up when driving. I am wondering if the coolant thermometer is broken. The dashboard never shows more than 1 bar of heat when driving, but if going very slowly and then stop at a traffic light for example, eventually it rises. User manual also states that auto-start stop wont work unless the engine is warm, however it works even if i've got no bars of heat. Any advice?

Thanks

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The usual culprit is the thermostat.

I'm not 100% but the 1.0 might have 2.

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I had the same symptoms happening on my 2014 1.0 ecoboost not too long ago. I replaced my thermostat at a cost of about £34 from Dorset Auto Spares. That price included the new housing. Easy to do, and took about 45 minutes. My average MPG went back up as well

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Yeah, just to echo what the others have said for added confidence, it'll almost certainly be the thermostat (the 'conventional' one on the right-hand side of the engine when viewed from the front) sticking open. A seemingly common failure on the Ecoboost; not sure quite why as the design and operating principle is exactly the same as on any other engine.

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