Jeremy_Brault Posted June 5, 2018 Share Posted June 5, 2018 I have a 93 rd with an e7 400. We overhauled the engine last winter. It acts like it doesn’t have any power now. So I had the injectors tested while I did the head retorque, they are perfect. I’ve acquired a pro link 9000 scan tool for a Mack and have narrowed it down to the timing is not advancing, it actually retards when accelerating. I have 12 volts at the econovance solenoid. I powered the solenoid with 12 volts and it runs better and shows timing advance on the scan tool. I tried changing Ecm and Bosch module no luck. I’ve also changed temp senders and manifold air temp sender, and Reset tem sensor, but nothing changes still no advance after idle. So my question what’s telling it to not advance? Quote Link to comment https://www.bigmacktrucks.com/topic/53506-93-rd-e7-400-econovance-electrical-problem/ Share on other sites More sharing options...
fjh Posted June 6, 2018 Share Posted June 6, 2018 Was there any timing codes ? Quote Link to comment https://www.bigmacktrucks.com/topic/53506-93-rd-e7-400-econovance-electrical-problem/#findComment-400088 Share on other sites More sharing options...
Jeremy_Brault Posted June 6, 2018 Author Share Posted June 6, 2018 (edited) No codes, well there is but it’s me unhooking and trying things Edited June 6, 2018 by Jeremy_Brault Quote Link to comment https://www.bigmacktrucks.com/topic/53506-93-rd-e7-400-econovance-electrical-problem/#findComment-400090 Share on other sites More sharing options...
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