When I first start my '03 chevy trailblazer (4.2L) there is ne service engine soon light, but idles very rough. When I put it in gear and accelerate the SES light flashes and seems like a vibration or misfire. Once I am coasting or back to an idle the SES light stays solid. I have not taken it anywhere to plug in to computer yet because most things I have read say it will throw a P0300 code which is a misfire code, but not specific. Is there anything I can do or check to narrow down the problem. Whether it be a plug, coil, etc.
have the same problem?
Tuesday, October 29th, 2013 AT 11:02 AM