2010 acadia limp mode need advice.

[vhehn]

 

I have a problem car. It's a 2010 acadia. The car is showing an "engine power is reduced,service traction control,service stabilitrack"message. There is no throttle response.

The codes indicate a throttle body problem. I have cleaned the original tb, swapped with a known good used tb, and now replaced with a new tb. also cleaned the maf. Nothing made a difference.

When you key on you can hear the tb working and there are no messages. You can manipulate the tb with the accel pedal so it's communicating. When you start the engine it starts and idles fine in closed loop without the messages. as soon as you try to accelerate the messages and the triangle light pop up and it goes into limp mode open loop and idles rough.

The codes my scanner shows are: p2119,p2101,p2100,p2176,p0100,p0113. If I try to clear the codes they will not clear. another scanner for abs shows:c0561,c0299,c0242 codes.

Can anyone give me some clues as what to do next?

 

 

[Maverick0984]

Does your model have AFM?  If so, you're in for some bad news.  Symptoms sound very familiar.

[vhehn]

yes it does. whats the bad news? what fixed yours?