Ok so a few weeks ago the cel came on and it was 171,174, and another which was the maf. so i changed the maf and they went away for about a week then came back on. ive sprayed carb cleaner and found nothing. The fuel filter was also changed about 2 months ago. so if someone can point me in a direction that would be great. Also if it really cold outside the truck idels really ruff until it gets warm.