how do i know if the o2 sensor is bad.
The check engine light would illuminate and the code(s) set would steer you to the faulty O2 sensor.
how do you k now the cam sensor is bad
When a crankshaft sensor is bad the engine will not run. The sensor is not usually intermittent, it is either good or bad.
i think it causes bad/rough idle
One indication of a bad sensor is when your speedometer bounces around, shakey, or jumpy.
One symptom of a bad crank shaft sensor is the car having trouble starting. The car stalling and backfiring are other symptoms of a bad crank shaft sensor.
A bad crankshaft position sensor will cause your Kia Sorrento to run rough. The bad crankshaft position sensor can also cause your Kia to not start.
You need a engine scanner and hook it up and it will tell you what sensor is bad.
when the hall effect and ignition module are good, the injectors and coil no work maybe this sensor is bad
the check engine light will come on
Replace both of them.
No, the computer needs that sensor to know crank timing.
If you are talking about a wheel speed sensor then the abs light will be on.