I have a 08 grand prix 3.1 liter engine in the extreme cold some times it runs really rough, jerking like its starving for air or fuel. It doesn't do it very often, or every time. had same problem last winter. This is a very well maintained vehicle. new plugs, wires, coil packs. Runs perfect till it gets extremely cold. Help?

Asked by Nov 24, 2013 at 01:35 PM about the 2008 Pontiac Grand Prix Base

Question type: Maintenance & Repair

1 Answer

...yes, the Intake Air Temp sensor may be faulty~ https://www.google.com/#q=08+grand+prix+3.1+liter+IAT+sensor&tbm=shop

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