I have a 92 ram50 with 2.4l. Its been running good til the other morning wouldnt hardly start and the check engine light came on. codes 13,15,21,25 came up. Why would all the code come at once? ECM went bad? Still runs smooth just really hard starting when cold. It use to have high idle when started but now it dont. ohmed the sensors and couldnt find a bad one. Any Ideas
Thanks
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