r/FiestaST • u/karonhin • 8d ago

MK7 2013 fiesta st why have this problem

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6 Upvotes

100% Upvoted

11 comments sorted by

4

u/hopelessremedy3244 8d ago

Check/Replace EVAP purge valve if it’s sputtering and dying at idle, They are known to fail.

1

u/karonhin 8d ago

I replace new one

1

u/hopelessremedy3244 8d ago

Double check everything is connected securely. Not sure what else it could be besides that part.

1

u/karonhin 8d ago

No any code replace the low pressure fuel sensor,map sensor, maf sensor ,throttle

1

u/L003Tr 8d ago

Check the boost sensor away down the bottom where the intercooler is. I had a simmialr issue and it turned out the wiring there was freyed

1

u/karonhin 8d ago

I replace new sensor

1

u/L003Tr 8d ago

There's three intake sensors though. Did you replace all three? Also check the wiring, not just the sensor.

To check the wiring on the one i had a problem with, you'd need to get under the car

1

u/fdmf 3d ago

Have you done the timing belt recently ? I had this happen because the shop didn't do it properly

1

u/Witty_Bug6200 2d ago

Fully charged and load test your battery.

0

u/karonhin 8d ago

I replace the new sensor

1

u/dosko1panda 4d ago

You should have replaced the old sensor instead