Car shudders after starting. Very sluggish when start driving it.
80

Asked by GuruYM9XD Sep 25, 2018 at 05:05 AM about the 2008 Pontiac G6 GT

Question type: Maintenance & Repair

When I start the car it shudders violently.
When I start driving it is very sluggish.
Brought it to dealership to diagnose. They
say it has carbon buildup. To fix it will be
about $750 but cannot guarantee that eill fix
the problem. Any ideas?

1 Answer
26,835

taver91 answered 6 years ago

Take the car for a second opinion. I thought that the "carbon buildup" repair recommendation went out with the 90's. All they do is put in some fuel treatment and run the car. same thing you can do for $3 and a trip to Walmart. More likely your problem will be either an ignition problem or possibly a failing cat converter.

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