Running rough

[tford]

Got the car fired up finally after an engine change and now running really rough. I'm thinking maybe the cam sensor is off. I didn't have caspers tool and didn't backprobe the wire to check for voltage drop. Just put it back in at the same spot. Plus I think we didn't locate the timing mark correctly. Notch on balancer was at 0 and 25 atdc mark was lined up to the left 1.5 inches. I think the mark for 25 atdc on balancer needed to be lined up at zero. Now what? Please help.

 

[bpman1234]

Could be off 180.

 

[SCOOBY DOO]

Kicking any codes on the SM?

 

[tford]

Code 23.

 

[SCOOBY DOO]

Code 23.

Air temperature sensor.

 

[tford]

Would a bad iat sensor cause it to run rough like that? Never had one fail before. So since I have a code does that rule out misadjusted cam sensor? I just added powerlogger during engine replacement so I guess that's another variable.

 

[SCOOBY DOO]

I'd fix the IAT issue...and then take it from there. Vortex Buicks has the correct way to set the cam sensor...or you can look it up on here.