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'91 740 CEL light on: Code 2-4-1

posted by  Rattlebone54 on  Wed Sep 5 22:42 CST 2018
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Sorry, but where do I find the FAQ's?
Went through many numerous cycles.
I couldn't erase the code, but disconnected the battery and light went off for a tank of gas driving daily running errands.
Yesterday filled up tank, drove 50 miles. Today CEL back on again.
I will check vacuum leaks at EGR switch/solenoid, and maybe pull it out. Will check the EGR sensor also! Thanks to everyone again! Bone...






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