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Ford Fiesta ST150 cutting off and starting up(limp mode)help

Mk6alltheway
Mk6alltheway
in Ford Fiesta Club

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Bought a fiesta st that was needing repairs engine sounds sweet as a nut, had to put new slam panel crash bar radiator and condenser in, so now I have it road worthy put back together every time it hits a bump the car cuts off for a tiny second, then drives as nothing happened but sometimes when it hits the bump it sends the car into limp mode and when I turn it off and back on its good? Or I hit a bump and it says engine system fault, really not to sure what it is that’s causing this

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    • 2 weeks later...


    Check all of your pcv valves and hoses. 

     (mine had) Im aware that the breather hoses split and then that can cause a loss of power and even limp mode. I have a 1.6 Duratec and never owned a ST15 I’m not sure where these are. Have a look online for the Crank ventilation/breather hose and the inlet manifold breather too. maybe worth checking the pcv valves also. 

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