dougmillard77
Junior Member
My truck wouldn’t quite start one day back in September, it would almost start, was getting fuel, had a good spark and we thought it was either the cam or crank sensors, they both tested good but was told it could be a intermittent issue with either one and that’s why it attempted to start, so I replaced both and still wouldn’t start, thought maybe it was flooded as I sprayed fuel into the tb earlier, so I held the pedal to the floor and fired up. The weather warmed up and it started good until one cool morning it did the same thing, held it to the floor and fired right up. It was flooding on cold starts all along, starts great when the engine temp is warm, but when it cools down to a certain temp it’s pedal to the floor to start! If I plug the block heater in it will start after 1/2 - 1 hr no problem! Only 2 codes have come up PO172, PO175 if I don’t hold the pedal all the way to the floor or do it quick enough, and never get a code when plugged in or if eng is still warm! I am thinking possibly the eng coolant temp sensor as I flushed the cooling system about a week before this started and I know that shouldn’t cause the sensor to go bad! Any help would be greatly appreciated as I don’t want to replace another sensor unnecessarily!