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[dillan]

my omega when code read  comes up with engine speed singal wat sensor would that be ?

[Andy H]

Crank sensor.

[dillan]

thanks ill change that then
but would you know why it does make the engine run different ?

[davieboy0312]

runs different because car would be in limp home mode when sensor fails

[Andy H]

The ECU uses signals from the crank sensor to decide where the crankshaft is and therefore when to inject fuel and when to spark.

If the timing is wrong then any engine will run badly (but usually the V6 just stops at random with a faulty crank sensor)

[dillan]

thanks ill change that then
but would you know why it does make the engine run different ?

ya sorry was meant to write doesn't :/