3.0L V6 running rough
The original problem began a little over a year ago. I was driving home in the morning and my truck started kicking and jerking and the temp gauge was going nuts. Check engine light was on and read cylinder 1 misfire. I dropped it by a shop and they changed out the thermostat and changed plugs and wires. It ran rough off and on through the summer and I never thought anything of it. I would put some fuel injector cleaner in it and it would run good for a while, but would always begin again. When I turned the A/C on it seemed like it would make it run worse. Once the winter time got here though I didn't have a single problem. Ran perfect. Once it began to warm up again though the rough running started back. I don't know what is going on with it. Maybe Vacuum leak, maybe fuel injector malfunction etc. The coil pack is new. No check engine light ever pop up unless I put the A/C on and it says cylinder 1 misfire, but the check engine light will reset when I turn it off. If any one could help it would be greatly appreciated!