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Service Engine Soon

offroadfury6

offroadfury6

New member
now I have a service engine soon text on my DIC, there is no dash lights on though...it just says "Service Engine Soon" ... 15 miles prior to this little issue, I put a bottle of Lucas fuel injector cleaner in my tank and filled up my car...

The manual says the following, " This warning message displays when a non-emissions related malfunction occurs. Have the vehicle serviced by your GM dealer as soon as possible. "

the rest is bull and so is that warning message.
 


Yeah..pull the code. I'd say the fuel cleaner may have broken some gunk from your tank....but Im sure itd take longer than 15 miles to break it up and send it through your system
 
Yea unless you had something sitting right inside that finally broke loose, because i live by those for long trips i get awesome gas mileage, Erie,pa to Brooklyn, NY, one tank of gas with those. And makes her purr all purty like
 
KeithGTP03 said:
Yeah..pull the code. I'd say the fuel cleaner may have broken some gunk from your tank....but Im sure itd take longer than 15 miles to break it up and send it through your system
Click to expand...

well I filled it up, drove it 1 mile home, then sat for a little bit and then drove a quater tank out of it...

I duno, whatever it is, the Lucas did it!!!

maybe I should have posted this in the rant forum lol
 
I asked the guy at AutoZone to scan my car and told him the type of light, he told me I needed to change my oil. I didn't argue, just looked at him like a fool and left. I don't want somebody like that even looking at my car.

So I went to Advanced Auto and they pulled the code, P0300-"Engine Misfire Detected Intermittent". So i'm pretty much lost here.
 


Maybe Vacuum leak (check all hoses, check EGR and its hoses)
Check/replace spark plug and plug wire
could be the injector (check wires)
 
all wires are good and plugs just changed 3k miles ago...everything clears out so far, I don't see how it's misfiring it I can't feel it/tell...
 
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