Winston brown Posted December 1, 2022 Share Posted December 1, 2022 EGR is reading 0% with scanner while engine run is this normal. Quote Link to comment https://www.bigmacktrucks.com/topic/70800-egr/ Share on other sites More sharing options...
Onyx610 Posted December 2, 2022 Share Posted December 2, 2022 Yes, push throttle some and see if it opens. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70800-egr/#findComment-516753 Share on other sites More sharing options...
Mackpro Posted December 2, 2022 Share Posted December 2, 2022 Won’t start working till 150 degree coolant temp. Then it’s only by request by engine ECM 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70800-egr/#findComment-516783 Share on other sites More sharing options...
Onyx610 Posted December 2, 2022 Share Posted December 2, 2022 42 minutes ago, Mackpro said: Won’t start working till 150 degree coolant temp. Then it’s only by request by engine ECM Yup, engine needs to be to “operating temp” otherwise it’s a cold engine and will not open. Forgot about that…good call pro. Quote Link to comment https://www.bigmacktrucks.com/topic/70800-egr/#findComment-516791 Share on other sites More sharing options...
Mackpro Posted December 2, 2022 Share Posted December 2, 2022 Using Tech Tool . This is the quick test we use to check EGR system. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/70800-egr/#findComment-516829 Share on other sites More sharing options...
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