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- Bucuresti
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- What I Drive
- Ford fiesta st 2015
FIESTA ST200 USA MODEL 2015
Vehicle issue – multiple parts replaced, problem persists at high RPM
Hello everyone,
I’d like to summarize the issue and the work already done.
I have replaced the following parts, all brand new OEM Ford:
The initial problem was that after every refueling the engine would start very hard, needing 3–4 attempts. After replacing the parts above, the car now starts normally and no longer stalls while driving.
However, a new issue appeared: when engine speed exceeds ~5000 RPM, the check engine light comes on. During acceleration, the engine vibrates and produces a deep, rough sound. Because of this, I suspect a possible issue related to the camshaft phasers / VVT system.
On diagnostic scan, multiple fault codes appear, many of which seem unrelated to each other, and I doubt they represent real, independent failures.
At this point, I’m trying to determine whether:
And i need to add the car Has the intake air from cobb, if this matter.
And… my break pedal is very hard, why?
Any advice or similar experiences would be greatly appreciated.
Thank you!
Vehicle issue – multiple parts replaced, problem persists at high RPM
Hello everyone,
I’d like to summarize the issue and the work already done.
I have replaced the following parts, all brand new OEM Ford:
- Spark plugs
- Ignition coils
- Intake camshaft position sensor
- Vacuum lines
- Turbocharger
The initial problem was that after every refueling the engine would start very hard, needing 3–4 attempts. After replacing the parts above, the car now starts normally and no longer stalls while driving.
However, a new issue appeared: when engine speed exceeds ~5000 RPM, the check engine light comes on. During acceleration, the engine vibrates and produces a deep, rough sound. Because of this, I suspect a possible issue related to the camshaft phasers / VVT system.
On diagnostic scan, multiple fault codes appear, many of which seem unrelated to each other, and I doubt they represent real, independent failures.
At this point, I’m trying to determine whether:
- the ECU (PCM) could be faulty, or
- the issue is more likely related to the camshaft phasers / VVT control system (oil pressure, solenoids, timing, etc.).
And i need to add the car Has the intake air from cobb, if this matter.
And… my break pedal is very hard, why?
Any advice or similar experiences would be greatly appreciated.
Thank you!
