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So as soon as i start wrenching on my own cars guess what fails.
THE BMW OF COURSE!
the only German car left in our families and it fails in spectacular BMW fashion today. The 128i has been pretty reliable all these years, just minor things like (take a deep breath), timing chain guides, vanos, window actuator(s), valve cover gasket, leaky PS steering reservoir, windshield reservoir leaking and uhh i think thats about it. It always costs a few thousand each time at the dealership.
Today her dad drove it and it started violently shaking and check engine light was on. I had BCAA tow it to the dealership in richmond where i went to scan the codes just now.
P0303 popped up, engine misfire cylinder 3 and also these O2 sensors failed
MID:$02 TID:$07
Minimum sensor Voltage for test cycle(calculated) - O2 Bank 1 Sensor 2
Max: 1.09934V Min: 0V
Test result value: 4.99846V
FAIL
MID:$06 TID:$07
Minimum sensor Voltage for test cycle(calculated) - O2 Bank 2 Sensor 2
Max: 1.09934V Min: 0V
Test result value: 4.99846V
FAIL
Im thinking the either the spark plugs or coils went bad. Didnt have any tools with me so i didnt bother doing a coilswap/plug swap but should i replace all of them at the same time or just replace the failed one?
Might also be the fuel injectors, in which case is it wise to replace them all or just replace the bad ones?
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