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Been fighting these 2 codes ever since I ran through a huge puddle (flash flood) when going to work. I have replaced the spark plugs and moved coil packs and the code stayed with cylinder 1. Here is the strange part. If I start the engine cold, I can get 1 trip out of it. If I drive for about 10-15 miles (no misfire during this time) and stop at a place and start it back up, it starts misfiring and get hesitation with a flashing CEL. I'm going to put some time into it this weekend and was hoping to get some assistance on where I should look. Here is my plan of attack.
- Search for vacuum leak.
- Clean MAF
- Clean and ohm injectors
- Ohm out o2 sensors.
- Inspect wiring for all these parts going to the source.
I'm kind of limited on tools (very basic set) but I do have a volt meter as well as a 12v test light.
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- 7 years ago
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