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Discussion Starter #1
Hello,
I have an ecoboost 1.0 (year 2017 ), from the beginning, when the engine is cold, the idle is unstable for 30 seconds. when the engine is hot, everything is fine. + it is hot, + idle is unstable cold with failures ( missfire?).
the garage says it's normal because it's a 3-cylinder engine. I think rather a problem of temperature sensor or the throttle body.
anyone knows how tested the temperature sensor and its location?
I'm listening to you.
thank you very much.
 

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Not a bad translation. Just a bad description. Unstable is too broad a term.

Engine RPM is never "stable". It always fluctuates. It's the nature of a running internal combustion engine.
 

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Discussion Starter #5
when the engine starts (cold engine) the rpm is at 1200, then 1300, then 1100, then it goes up, then goes down, then a missfire, for 30 seconds
 
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