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03 ranger running on 2 of 4 cylinders

  • joayjd
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2 years 7 months ago #60336 by joayjd
03 ranger running on 2 of 4 cylinders was created by joayjd
i have been stumped the past few days i have a 03 ford ranger 4 cylinder, before i bought it, it was going through coil packs and would replace them and run fine for a couple weeks then run on only 2 cylinders when. I bought the car we tested the ECM and it was giving a weak single to cylinder 2&3 but giving a good single to cylinder 1&4. after that i buy a new ecm and program it and it still has the same weak single to cylinder 2&3, i re-ran new wires but no luck, it threw no misfire codes need help, thank ya

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