2010 ford focus se idles rough and shakes at stops.?

Question

I’ve changed the mounts, crankshaft and camshaft sensors, maf and map sensors new spark plugs and coils. Checked for vaccum leak there is none. Need help with that of somebody knowz. Thanks

Answer 1

Yep,a fault code reader should reveal the cause. The ECU controls the tick over assuming all else is OK. On some Fords things like a battery change can lose it's settings. The car then has to be driven at varying speeds for the ECU to re-learn the values. So if you haven't driven the car after a battery disconnect it may be as simple as that.

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Answer 2

Check for trouble codes with a scan tool.  Could be a bad throttle body.  Check the fuel pressure with a gauge.

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