[brandau7]

my truck has rough idle and long crank sometimes. but the wires they talk about in that sticky thread are fine.
however, i am getting a check engine light and a code for cam sensor.
so.... does anybody know if a bad cam sensor would cause it to not idle smooth? cuz other that that it runs very nice. good power, etc.

 

[TX_Dj]

which cam sensor code are you getting?

 

[brandau7]

the 0341 code

 

[TX_Dj]

If you have no other codes, then you need to check the sensor itself.

If you measure with an ohm meter across the sensor's pins 1 & 3, and the resistance is outside of the 900-1100 ohm range, the sensor needs to be replaced.

 

[steelhead01]

also ohm check the CPS wiring for a short espeically to ground/chassis. they can rub on metal and short out the ECM control sense voltage circuit

 

[brandau7]

changed the sensor but no change. tach still acting funny and hard to start sometimes.

 

[brandau7]

also ohm check the CPS wiring for a short espeically to ground/chassis. they can rub on metal and short out the ECM control sense voltage circuit

the middle wire shorts to ground. is it supposed to?