Fuel gone Bad? flat engine sound loss of power and mivec

[demonjay]

Haven't driven the car in a long time and it was running rough...flat engine sound loss of power and Mivec.

Pulled the diagnostic codes and it says detonation sensor.

I think the fuel in the car is close to 7 months old could that be an issue?

Just wanna clear one thing off the list before troubleshooting the rest of the systems.

[dstocks]

Wont help, but probably not. In the past, ive had some fuel in the tank thatwould have been 18 months old. Ran a bit rough. Try some injector cleaner. That fixed mine after I put more fuel in.

[demonjay]

I was thinking more of the octane content degrading over the brisbane summer.

I disconnected the knock sensor and the engine was the same so looks like I might try replace it.

Remove the intake manifold to get to it yeah?
viewtopic.php?f=23&t=12280

[Vectose]

Need to remove both the upper and lower parts of the manifold.

[demonjay]

Need to remove both the upper and lower parts of the manifold.

Cheers for the heads up Vectose.

I don't have a spanner to fit the sensor...anyone know what size it is or alternate methods of removal?

[Vectose]

I forget if it was 24mm or 27mm.

Can use a large shifter to remove it, or cut the plug off if you're replacing it and use a socket if you have one large enough.