That's correct. No codes, engine light has never come on. Once the car has warmed up, say if I shut it off and run into a store for example.. Upon starting it, it has a very lopey idle but once I put it in drive and accelerate, it smooths outs and has zero issues. I bought bosch platinum +4 plugs yesterday but took them back for AC DELCO iridium plugs today. I got the front three in but wasn't able to get the rear three. Couldn't get the wires off (cold and rainy, was tired of trying). I also bought a new fuel filter which I plan on changing tomorrow as well as running some Lucas through it... Just has me puzzled...