Fiesta mk6 1.6 tdci no power

[mexicotait]

My diesel fiesta developed a fault the other day whete it has no power like turbo isnt working

Had it happen before where it was a faulty egr valve
Car will drive fine with the maf sensor unplugged but throws up a fault code because its unplugged

When everything is plugged in its sluggish and slow

Changed the egr for a new one and its still the same

[Graham]

most likely its the MAF at fault, if its not showing the ecu a rise in airflow the ecu wont give any fuel, thus no power, but unplugged the ecu wont know the amount of air going into the engine so it will assume a 50% default fueling level so you will have some power but a light on with it.

[mexicotait]

Forgot to say i changed the maf for another one still the same

[Scott_B]

Did you try clearing the codes when you substituted the maf?

[alladdin]

Still sounds like maf for reasons graham has mentioned


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[mexicotait]

Yes codes have been cleared
Changed it back to the original one last night and it seems a little better this morning

Think both are faulty so ill try another one
Unless there is any way of testing them

[mexicotait]

Tried anothe brandnew maf sensor and its still the same
Help before i torch it

[t4 and greys]

Probably your turbo shat itself

[mexicotait]

No turbo is fine as it has boost when maf is unplugged

[mexicotait]

Right still battling on with this and getting nowhere
Changed the egr valve for a brandnew one with brandnew gasket plate
Still the same except in now get
Engine malfunction sign pop up

When this comes on the car drives fine with good boost

However when i turn the ignition off and on it clears and runs with no boost again


Tearing my hair out

Please help

[alladdin]

This can be caused by faulty heater plugs on the 1.6 believing it or not but I can't remember if em light shows


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[bondy]

yes light will show when glow plugs are faulty and it will put the car into limp mode but be careful they are prone to snap off this 1.6 tdci engine is a little shit done a couple of them with this problem had two cars that snapped then its head off job

[mexicotait]

Had them out fairly recently and changed them
Only other thing i havent changed is the map sensor