LT1 low rpm/lug stumble

[misterKTM]

I've noticed a bad stumble & miss if I lug the motor down below 1200 rpm. The engine only has 10,000 miles on it since all new distributer, wires, plugs, and fuel filter. Any thoughts ??? (besides don't lug it down that far...). Maybe this is normal and I just haven't seen it prior to lately ??

Thanks,

Rob

 

[Tuna]

Not normal to stumble and miss below 1200. Somethings amiss (?) here. The only way to win fuel mileage rallyes is to lug it - like 6th gear at 40-45 mph.

Are you getting any codes set? SYS messages?

It could be that one or more of your new wires or plugs is bad.

 

[misterKTM]

OK - finally got something from the car...it gave me a service engine soon light this morning for about 30 seconds upon start-up. Then it went out for 15-20 seconds, came back on for a 10-15 seconds, then went out and I never saw it again. Is there a way to get a read out of the code it threw in the digital display ?