HELP!!! 2007 Silverado 1500
December 20th, 2015, 1:40 AM
#1
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HELP!!! 2007 Silverado 1500
Hello, I a having a heck of a time with my Silverado missing. I have been fighting it for the last month. I finally have it to one code a P0300, random misfire. I ran a data scan for 11 cycles with it just idling. I got ign advance of 3.5,3.0,5.0,2.0,5.5,6.5,11.0 12.0,11.5,12.5,11.5,15.5. Should the timing change this much at idle? Also, when I pulled the 4th plug wire out, the plug came out. I threaded it back in. I was showing a miss on cylinder 1, but that seems to be not showing up. One last thing, the other day, I got a flashing CEL and couldn't get it above 1500 rpm without it missing like crazy. Thanks.
December 20th, 2015, 9:31 AM
#2
what engine?
the flashing mil is from the misfire condition.
the easiest way to do this is to monitor the misfire counters with a scan tool. this way, you can isolate the problem to a specific cylinder or cylinders.
the flashing mil is from the misfire condition.
the easiest way to do this is to monitor the misfire counters with a scan tool. this way, you can isolate the problem to a specific cylinder or cylinders.