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Mackpro

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Everything posted by Mackpro

  1. Mackpro
    Everything on the CCRS 460 has to be perfect to keep it from over boosting and causing the dreaded 4-5 code and derate. Even being a new turbo it could still not be calibrated correctly and over boosting.
  2. Mackpro
    This issue is as only for the ASET AC engine that came in the CXN and CHN trucks and also the oddball 2004 year only CX and CH truck. Your truck ( ETECH, CCRS and ASET AI style engines) air compressor air supply is on the pressure/turbo boost side of the intake system which is good .
  3. Mackpro
    You can pop the plastic cover off the circuit board pretty easy on the VECU. The 1999 and up RD’s had problems with the VECU mounted with the connectors facing straight up . The windshields would leak water into the VECU since it was facing up . Took several of the VECU apart to dry and possibly save them
  4. Mackpro
    That top wiring diagram looks to be for a manual transmission with the 2 wires going from the road speed sensor all the way to the Mack VECU Vehicle electronic control unit . And of course the bottom diagram is on the Allison side . I think ( and I’m only 60 percent sure) that when the VECU is programmed for use with Allison trans it disregards the normal road speed inputs and looks for the info over the J1939 data link from the Allison ECM .
  5. Mackpro
    Mack has a couple of bulletins on this code. The newest version of Tech Tool has the new troubleshooting procedures. Mainly looks like slopped cam lobes.
  6. Mackpro
    Lol, If I had my own personal truck, I would not have any auto transmission/M-drive. However being in fleet maintenance and not having to deal with the issues of the Mack T310 we we’re having, we can focus more on regular services, brakes and tires. I really miss shifting the Fuller super 10 transmissions.
  7. Mackpro
    The common rail engines camshaft is just a hollow tube with lobes heated up and dropped on the tube . And they did away with the vibration damper on the back of the camshaft. Make it a lot lighter to change. All of our common rail trucks have been great , all of ours have had the EPRV delete , fuel rail pressure sensor/harness upgrade done and that helped a lot. We also switched to the M-drive trans and that cut our maintenance issues by 30%. No more clutch adjustments, synchro replacements , PTO to trans leaks stopped.
  8. Mackpro
    Mack figured out they didn’t need the electronic fuel pressure regulator vale EPRV so they came out with a delete kit and software for the failure prone valve . This was only on the common rail engines. I believe some new dealer only tools just came out to check for spun lobes on the cam shaft
  9. Mackpro
    Mack service bulletin SB-221-029 was specifically for the 4-5 code troubleshooting. Service bulletin SB-214-017 is more on the design and function of the CCRS 460 turbo. I’m not able to find online links for either .
  10. Mackpro
    There is a service bulletin on the “4-5 code CCRS “ I’ll try to find a link to it. In the US this waste gated turbo set up was only on the 460 HP CCRS engines, right before the ASET series engines came out . It was an on going battle to keep the boost pressure in the right specs to prevent under boost or even worse over boost that de-rated the engine. We downgraded several trucks to 427 Hp to get away from this nightmare. My favorite truck of all time was the 2002 axle forward CH 427 CCRS with a Fuller super 10
  11. Mackpro
    Also if your DOC ( where the exhaust goes into your DPF assembly) is face plugged , it will never get hot enough to burn the soot to ash in the filter. Look up “ face plug DOC”
  12. Mackpro
    What kind of laptop program do you have ? Can you view regen temps? During the regen your T2 ( middle DPF sensor) should be at least 880 degrees 3/4 way through the regen . A sticking EGR valve can cause the DPF filter to clog fast. There are test for this if you have the tech tool program. Make sure the ports are clean under the EGR diff sensor. A rubber tipped blow gun hooked to a air compressor works good. But I have had them so clogged I had to use a drill bit to get through the soot
  13. Mackpro
    What was the fault code and what sensor did you buy ?
  14. Mackpro
    The DRV valve set up is only used to help heat up the exhaust for a regen. They dropped this feature around 2011 when the figured out how to increase exhaust temp by manipulating the injector timing. No EGR flow during regen is the norm .
  15. Mackpro
    https://static.nhtsa.gov/odi/tsbs/2014/SB-10083342-6903.pdf EGR diff sensor bulletin
  16. Mackpro
    Being it a 2009. There has been at least 2 ( possible 3) EGR valve updates . More importantly there has been many EGR Diff pressure sensor/venturie updates. If the EGR diff sensor ports are clogged then the engine ecm sees no flow even though there is flow. The engine ecm then commands the EGR valve to open more to try to get flow , this over soots the DPF
  17. Mackpro
    https://www.macktrucks.com/parts-and-services/support/body-builders/manuals/heavy-duty/. Lots of good information in this link here but I swear at one time they had info on how to set up the parameters to run a driveline pump for the concrete pumpers and what possible derates there could be .
  18. Mackpro
    At this point I wonder if it’s programing done by the bed company (Putz) as a safety feature and limiting RPM due to something going on with the bed ( transfer case temp) ? The Mack Body Builder online manual has lots of free info on possible parameter settings for theses types of Installz. I’ll link the page soon
  19. Mackpro
    I believe on your year RD, the oil pressure guage is mechanical ( braided line coming off filter stand going into cab / back of guage) . The engine ECM could care less about the guage , its looking at the signal coming from the oil pressure sensor. Without at diagnostic reader of some sorts ( JPro , tech tool or the old VMAC 3 program) you can’t see what oil psi the engine ECM is seeing even though your guage reads good. Most trucks your year were only set to shut down on low oil pressure or high water temp. But the low coolant level shut down could also be turned on as well .
  20. Mackpro
    The first few years of Mack putting the MP engine in their trucks, you better remember every recall, service bulletin and product improvement campaign because you we’re gonna use them several times a day ! Lol. I saved every email mack ever sent out since 2005 , they were good about sending out info to the service technicians . That slowly trickled to a stop by around 2014
  21. Mackpro
    https://www.trwaftermarket.com/globalassets/na/trucksteering---literature/steeringcolumns-lit/steeringcolumns-sp/col_192.pdf
  22. Mackpro
    Here is the recall information and how to adjust the column, most of the time the gas cylinder goes bad and won’t push the locking arm hard enough,
  23. Mackpro
    Someone could have put a used dash cluster in the truck. The milage stays with the dash cluster. On the newer trucks ( I think 2013 and up) the other ECM’s also log and save the miles. But only what’s in the dash cluster is displayed. Tech Tool can be used to see if the ECM all have matching VIN numbers is see if it has been changed
  24. Mackpro

    top tech

    Mackpro replied to top tech's question in Mack Truck Q & A

    The cam gear sensor sometimes needs shims on it to get it set right , there is a tool to measure if or how many shims are needed. Also did you the cam gear timing tool with the little rod / pointer that goes in the hole in the block ? It’s easy to get a tooth off without the tool . https://www.freedomracing.com/j-44514-b-engine-timing-kit.html?___store=default&gclid=Cj0KCQjw06OTBhC_ARIsAAU1yOVcfK5KSfGydFWvQMI0R_gYML4GjYXgKC3CxHeBBHVSP3olEk9UnRYaAgcTEALw_wcB
  25. Mackpro
    Sadly , the reman ETECH engines will be painted MP red as the Mack re-man center cannot get the grey paint . I would not have believed it but I saw the bulletin myself.

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