Greetings group,

Getting ready for a drive in my 2004 3.4L Monte Carlo to St. Louis. And in August a 972 mile drive to Bentonville Arkansas .

Before replacing the EGR (was plugged) I would experience an intermittent hesitation with the cruise set on at freeway speeds. After replacing EGR I notice the car is "peppier" and went from 340 on a tank to 0ver 400+ on a tank using regular fuel (87 octane).

The intermittent hesitation has improved. But I still experience this from time to time. I reviewed this issue with my trusted local mechanics. They gave me a can of this fluid that is professional grade ans is supposed to clean my injectors. When I poured that into my almost empty tank I willed the tank with Super gas (93 Octane). I am watching my mileage like a Hawk to determine and mileage changes using Super vs Regular gas.

Also, even though I replaced the EGR. My Check engine light is on. And the code that pops up is for the EGR, although it has been replaced.

Thanks in advance!

George in Pittsburgh

2004 Chevy Monte Carlo

172,000 miles