Dustinj Posted March 24, 2018 Share Posted March 24, 2018 Hey guys. First post overs here. Truck runs good and strong. Started running out of fuel like you tirned the key off while driving. I could get it started with ether and it would run fine for the rest of the day sometimes or it would do it again. Eventually it wouldn’t pickup the fuel so we took it to the mechanic. He replaced the lift pump and pressure relief valve. Now it starts and runs but the idle rapidly increases and decreases. and back up to 1200 I have a video but it’s too large to upload here. Pm me and I’ll semd it to you Thanks guys. Quote Link to comment https://www.bigmacktrucks.com/topic/52912-98-rd688-eradic-idle-after-lift-pump-change/ Share on other sites More sharing options...
j hancock Posted March 25, 2018 Share Posted March 25, 2018 Sounds like the governor is out of sorts. Binding or worn out. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52912-98-rd688-eradic-idle-after-lift-pump-change/#findComment-395106 Share on other sites More sharing options...
Dustinj Posted March 26, 2018 Author Share Posted March 26, 2018 Thank you for a direction to go. I’ll look into and see what I find. Quote Link to comment https://www.bigmacktrucks.com/topic/52912-98-rd688-eradic-idle-after-lift-pump-change/#findComment-395214 Share on other sites More sharing options...
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