reece13
1/2 ton status
well today i changed the spark plugs in the ol blazer. its an 89 350 tbi. bone stock motor. I also changed the coolant temp. sensor since i was getting a little rough stumbling at cold start idle. After all said and done, the truck fired right up, runs good BUT the "service engine soon" light wont go off. I tried unhooking battery cables but that didnt reset it. I cant see any place where the plug wires are grounding out so im not sure what to check next...
should i just go ahead and change the wires and cap n rotor too? or could it be coincidence that maybe the 02 sensor or something else is bad??
should i just go ahead and change the wires and cap n rotor too? or could it be coincidence that maybe the 02 sensor or something else is bad??
