Maserati M139 -P0300 , P000a - loss of power

MaseratiPoland · Apr 10, 2024

Hello, I have a problem with my Maserati Quattroporte with the M139 engine. The car has no power (Especially at the bottom and at the top). It throws errors as in the attachment. What I did:
-New candles
-Coils replaced
-Injectors cleaned and checked
-The tank was removed to verify the fuel filter
-Oil change and flushing

What could hurt him?

RJ237 · Apr 10, 2024

swap coil packs from 5&7 with two coils on the other bank and see if the misfire codes change.

MaseratiByChance · Apr 10, 2024

Are you ignoring the timing sensor code?

Billydv · Apr 10, 2024

I agree, I think you have to deal with the timing sensor code first as that may or may not have something to do with the misfires

omulec · Apr 10, 2024

Swap timing sensor between banks and see if the error goes to the bank, so it's the sensor probably. If it doesn't, I suspect timing setting (wrong setup during timing job, variator/chain issue)

RJ237 · Apr 11, 2024

Yes, my error.

MaseratiPoland · Apr 11, 2024

I have to remove the intake manifold to change the camshaft sensor?

MaseratiByChance · Apr 11, 2024

MaseratiPoland said:
I have to remove the intake manifold to change the camshaft sensor?

Cam sensors are on the top of both valve covers at the firewall or bulkhead (to be politically correct).

Maserati M139 -P0300 , P000a - loss of power

MaseratiPoland

RJ237

MaseratiByChance

Billydv

omulec

RJ237

MaseratiPoland

MaseratiByChance

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