Pontiac Problems? Ask a Mechanic for Answers ASAP
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
The flashing light indicates that a misfire is detected.With the code set this is misfire in cylinder 6 indicated by the number 6 at the end of the code.The light flashes to alert the driver there is an engine misfire needing repaired before it damages the catalytic converter in the exhaust system.
It sounds like the misfire is intermittent since it has come and gone and back again.This can be a fault with the #6 fuel injector not atomizing properly.This is most common with the injectors needing cleaned.I have also seen common issues on the 3.8 liter with the spark plug and plug wire causing this with both needing replaced.Plugs should be replaced around 100,000 miles and spark plug wires every 5 years.If these are o.k. then I would have the injectors cleaned to keep this from occuring again.
If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.