2001 Suburban 1500 5.3 P0304 flashing SES
August 8th, 2015, 9:37 AM
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2001 Suburban 1500 5.3 P0304 flashing SES
P0304 drives fine but idles like it has a big cam. SES on and sometimes flashes. I put in a new plug, swapped coil from 4 to 6, and spark plug wire from 4 to 2, cleaned the MAF and cleared the codes.
No change. After a while at idle (like at the end of a traffic light cycle) the SES light flashes until I start to accelerate and then goes out. Scan shows a pending code P0304.
I listened to the fuel injector and it sounds like the other ones on the bank, but I know that won't tell me if it's dirty.
Any thoughts on what to tackle next? I am a bit surprised that I moved/changed all of the spark items on cylinder #4 and it's still on that cylinder.
No change. After a while at idle (like at the end of a traffic light cycle) the SES light flashes until I start to accelerate and then goes out. Scan shows a pending code P0304.
I listened to the fuel injector and it sounds like the other ones on the bank, but I know that won't tell me if it's dirty.
Any thoughts on what to tackle next? I am a bit surprised that I moved/changed all of the spark items on cylinder #4 and it's still on that cylinder.
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