Need help, motor running funny

[mcreyaufmiller]

I just started feeling a little shutter in my motor on low idle. Feels kinda like a Crank Position Sensor going bad but I have not gotten any codes yet. It only happens on accerlation during low idle, once the motor gets some RPM's it goes away. However, when you reproduce the shutter while in park and let off the gas pedal, it idles funny for a few seconds before it levels out.

I had the same problem with a Pontiac Bonneville that ended up being a CPS, any other ideas or has anyone else had this problem?

[PewterC3]

dirty throttle body or injectors?

[mcreyaufmiller]

No, all clean. But the engine light came on today so as soon as I get it scanned, I will let you know what I found.

[PoorboyVortec5.3]

My truck is doing the exact same thing! What ended up being the problem?

 

Thanks