Shows service traction and the tachometer suddenly stopped working after replacing crankshaft position sensor

ABISHEKSINGLA

MEMBER
2010 CHEVROLET COBALT
2.2L
4 CYL
2WD
AUTOMATIC
182,000 MILES

I replaced the crankshaft position sensor from the mechanic. Now it shows service traction and the tachometer suddenly stops working. Sometimes it starts suddenly but sometimes it takes too long to start. Engine light is on but sometimes it goes off. Do know but to do with this car.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

So if all you did was replace the CKP sensor and this started, the only thing that really makes sense is the sensor is either not correct for this vehicle or it is a faulty sensor.

I have seen some sensors that are just not built correctly so I would start with returning this sensor and have them exchange it. Then make sure the sensor is not for another engine and they looked it up wrong. Looks like the sensor for the 2.0L and 2.2L are the same 12588992, but this just seems like the sensor is functioning but with these odd issues it is like the sensor is providing irregular information. If the replacement sensor does the same thing or other issues that were not there, I would suggest changing supplier of the sensor.

I am attaching the process for the sensor in case you need this. Also, if other visit this page they have it as well.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Let us know what happens and we can go from there. Thanks

Images (Click to make bigger)