cfd511

Yes we just replaced the turbo. It had a few nicks in the blades. Put it back on. Was getting great pickup until 5 mph then went into derate mode. Had programming fixed and still no power

no codes at all, now im only getting like 2 psi . i blocked of the egr and still no change.

Any of you fine fella s have issues with a 2015 mack granite mp8 engine just shutting off randomly. changed the engine harness, replaced all the cups, fuel pump, and found a bad ground. truck now starts quickly but really has no power under a load. pulling a volvo 160 and has a hard time getting to 30 mph. Put new fuel filter housings and boost pressure sensor. Have mechaic check valves again in the morning.

hello all ,well it took alot of figuring out but we finally did. It was a combo of issues . First was the trailer wasn't loaded properly and the drop axle wasnt air up properly . once we did that its was a night and day difference. second we had a big leak on the slave valve on top of the transmission which kept the air suspension under inflated. we never noticed that for some reason. so far its been good riding. thank you all for the help. this was indeed a weird one.

Im going to grab a loaf monday with the truck . Ill spread the load as described above and see if that works . Ive been filling the tires to 120 psi as the tires Say tondo. A old school Trucker saidnim crazy and Said to run 110 because the heat buildup is prob over inflating the tires.

i hope one you knowledgable guys will have advice. im going to sell this thing if i cant figure it out. my insides still hurt.

Have a 2008 mack granite tractorwith mp 8. Been pulling a dump trailer behind it and when i have mulch in it rides smooth. Brought a load of RCA home today and felt like my insides were being bounced around I'm Seriously considerings selling the truck after this .I still feel sick from the ride home. i Have alot of other mack and its always been the heavier its is the nicer the ride.Anyone have any ideas . THe truck has 4 air bags on the rear.i checked the linkages for the ride height system and all seem to be attached and functioning . Please anyone have any ideas.

2016 mack mp 8 deleted dump truck . Was running great then one day i was merging onto highway and had to hit the gas and the truck fell flat on its face and died . Insas able to restart but now it dies at random times and is hard To start. We replaced the cups and two bad injectors but still didnt fix it . We dont see any visible leaks . any ideas on how to find a leak that doesn't want to be found . also diD fuel pump when cranking after it stalls . The engine only cranks few times then stops and keeps repeating . Someone said this was a safety because of low rail pressure . i have this posted in another engine and transmission but only got one response

Hey is there a way to call you on this . Im broke trying to figure this out.

2016 mack mp 8 deleted dump truck . Was running great then one day i was merging onto highway and had to hit the gas and the truck fell flat on its face and died . Insas able to restart but now it dies at random times and is hard To start. We replaced the cups and two bad injectors but still didnt fix it . We dont see any visible leaks . any ideas on how to find a leak that doesn't want to be found . also diD fuel pump when cranking after it stalls . The engine only cranks few times then stops and keeps repeating . Someone said this was a safety because of low rail pressure . thanks for any feedback

Looking for a mack granite dump truck , color red, auto transmission . Have at the most 70,000 to spend. Looking to have mp8 motor or other high hp motor. Let me know what you got .

Hello all , have a 2000 mack rd 688 . I burned up the starter and replaced multiple times now . It seems the starter somehow is staying engaged and not releasing which is burning it up . Any of you guys have any ideas . Any idea what to test to find the problem

Anyone have a recommendation on a seat for a 2008 mack granite day cab . Stock seat is shot and looking for something a-lot more comfortable.

dex has nothing in stock. anyone else know where I can get hood

Any chance you have th right part number