View Full Version : Cts V Engine Problem

David W. Bailey
07-18-05, 03:47 PM
I have a 2004 CTS V with about 7K miles on it. Recently, the engine has been "cutting out" momentarily, usually at low speeds and between 1500 and 2500 RPM. When the "cut outs" occur, you can hear the drivetrain clunk as the motor cuts out, then suddenly back in again.

The cruise control also malfunctioned at about the same time. I have no idea if the two issues are related.

I love the car but this is a really annoying problem. The dealer could find nothing and it is tempting to suspect poor clutch skills on my part, but it happens when no clutch work is being done at all. I don't think that it is due to lugging either, as it can happen at 2500 RPM.

Any ideas would be greatly appreciated !

07-18-05, 03:54 PM
I had a similar problem a while back and my dealer replaced the throttle position sensor and it fixed it. Not sure if this will work for you, but it sounds very similar. When I would accelerate quickly or past about 2500rpms the motor would cut out and the screen would bring up something along the lines of "loss of engine power".

07-18-05, 05:41 PM
MAF(mass air flow) and or TPS....etc etc... to easy variables....

David W. Bailey
07-18-05, 06:28 PM
Thanks LV V and V Series Tech, I will see if the dealer can figure

out the problem now with this additional information.

Dave's V
07-18-05, 06:49 PM
:welcome:to the site!!