Coffeyrd Posted November 26, 2013 Share Posted November 26, 2013 Hi all! I have a 2001 RD with the 350 E7. Had it at the dealer to run the valves and to check on the stop engine light coming on when first started in the morning. Anyway, they ran the codes and said it needed two EUP's and it would cost $2400 . The truck has 200k on it and seems to run fine. Is this something I can do? I am very mechanically inclined but have zero experience with Macks. We just got the truck. Though it seems to run fine, would it run better?? Running 72k half the time and empty the other half it gets about 5.5 mpg. Would replacing the two EUPs help that? Thanks for any input! Quote Link to comment https://www.bigmacktrucks.com/topic/33641-350-hp-e7-eup/ Share on other sites More sharing options...
Dirtymilkman Posted November 26, 2013 Share Posted November 26, 2013 The last eup's I bought were under $300. And they take about 15 minutes to replace. But you still need to have the dealer calibrate them to the motor eventually. My dealer here doesn't charge for that. Usually the engine light eup code will come up as the weather gets colder, you may have a good year left in them though. If you replace them yourself just make sure u soak the pump o rings in the tight type of oil before installation. Those o rings are $50! Quote Link to comment https://www.bigmacktrucks.com/topic/33641-350-hp-e7-eup/#findComment-218448 Share on other sites More sharing options...
Coffeyrd Posted November 26, 2013 Author Share Posted November 26, 2013 Thanks for the response. When you change them is it a simple deal to swap them out? Also, would they cause the "electronic malfunction" light to come on? Quote Link to comment https://www.bigmacktrucks.com/topic/33641-350-hp-e7-eup/#findComment-218541 Share on other sites More sharing options...
Dirtymilkman Posted November 27, 2013 Share Posted November 27, 2013 They are easy to swap and they will cause a light Quote Link to comment https://www.bigmacktrucks.com/topic/33641-350-hp-e7-eup/#findComment-218651 Share on other sites More sharing options...
rw613 Posted November 27, 2013 Share Posted November 27, 2013 make dam sure you replace the bolts if you reuse them they will break if your truck is running fine and is not rough I would leave them alone we have 1 etech that throws unit pump codes since it was new and after replacing several sets and I mean sevral sets we stoped if it aint rough or missing walk away Quote Link to comment https://www.bigmacktrucks.com/topic/33641-350-hp-e7-eup/#findComment-218657 Share on other sites More sharing options...
Coffeyrd Posted November 27, 2013 Author Share Posted November 27, 2013 The truck runs fine and doesn't smoke or anything so I guess we'll leave it for now. No sense in throwing money around just because. Thanks for the replies! Quote Link to comment https://www.bigmacktrucks.com/topic/33641-350-hp-e7-eup/#findComment-218699 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.