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Need Help/Insight - L67 stalling/running rough

RebelGTP

RebelGTP

New member
My car has been running rough every now and then ever since Wed night.

It was randomly stalling out at idle, stoplights, etc...

I replaced the spark plugs with ACDelco 41-101's on Saturday.

While at work last night, it really didn't stall out as much as it did, but it did throw a SES light that went away.

I was attributing it to bad gas, but I am not so sure now because of what it did later last night when I tried to move it.

It acted like it was getting no fuel for about 5 minutes... I finally turned the key off and on about five times to let the fuel pump prime and then it started right up.

Therefore I am thinking Fuel Pump or fuel filter? are my assumptions along the right lines?
 


Those are good places to start looking for problems. If can get a scanner hooked up that would be even better.
 
a guy had the same issue a few days ago, he fixed it fairly easily, i think it just required a quick trip to the dealership and traded in the gtp and got a g8
 
****... I need to fix this issue, I may have gapped the new plugs too open... to 0.65. Autozone lists the 41-101s as needing gap of 0.60.

Either way, the car is throwing "P0300 - Multiple Misfires" and the exhaust smells like sulfur after it dies and I have to fight with it to get it back started. I may not have use of the heated garage where I changed the plugs, so pulling them out in freezing temperatures will have to do.
 


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