Jump to content


Porch Pup
  • Content Count

  • Joined

  • Last visited

Community Reputation

6 Good

About TimberJack

  • Rank
    Old Iron Expert

Profile Information

  • Location

Previous Fields

  • Make
  • Model
  • Year

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. TimberJack

    Hard to turn left.

    Installed a new steering box and power steering pump on my 2011 CHU and it seems to be stiff when I turn left compared to turn right. Someone told me it needs to be adjusted but I’ve never done that before.
  2. Looking for a 2008 up replacement cab. Must be daycab.
  3. TimberJack

    Fuel delivery pressure.

    Will check it out thanks.
  4. TimberJack

    S400 Turbo too big for 1991 E7-350????

    2003 427, if you stay with the stage 2 you will be fine. Mine preforms best around 1400-1600 rpm
  5. TimberJack

    S400 Turbo too big for 1991 E7-350????

    (S400) # 23504966. I put stage 2 injectors and mine runs like a different truck. I tried stage 3 but was to much heated up to quick.
  6. TimberJack

    CHU cab

    Looking for a 2008 up replacement cab. Must be daycab.
  7. TimberJack

    2008 mp8 falls on its face

    Did you check the plugs for oil at the ECM had one do that. Ran great until it got hot then ran like crap. I changed harness and it fixed problem
  8. TimberJack

    S400 Turbo too big for 1991 E7-350????

    I’ve got a s400 for a 60 series Detroit on my E7 with stage 2 injectors. Does great.
  9. 2009 CHU MP8 starts and idles fine, even revs good. When you get it out on the road does great shifting through the low side but once you get to high side it’s like you lose throttle but it’s on the floor. Pulled code and showing engine fuel delivery pressure. I check valve on the front of the head and the plunger is moving freely. I also check fuel filter house bc I had one that was sucking air on the backside of primer but it seems to fine. Could it possibly be the cups? I looked in fuel tank to see if there were any bubbles coming out on the return and nothing.
  10. TimberJack

    Injector problems

    2008 CHU MP8. Going through injectors like crazy. You can put a new one in and it might last 3 to 6 months. Could this be a wiring harness problem?
  11. TimberJack

    8-9 code Solenoid Boost Voltage

    It was active, engine seemed to lost a lot of power. Have to drop gears pulling a empty log trailer that I never had to do before.
  12. TimberJack


    Can you start the truck by jumping it on the starter?
  13. 2003 E-tech seemed to lose power and had a skip. Check the codes and had a 8-6 # 6 EUP and a 8-9 Solenoid Boost Voltage. What should I check for the solenoid boost problem?
  14. TimberJack

    Cab for CHU

    I’ve never called the dealer. Figured they would be to high so I’ve been look online for a take off.
  15. TimberJack

    Jake Brakes

    I’ve got a 2004 AC engine sitting in my building and was wondering if the Jakes will work off it on a 2003 E-Tech? Ran across a heck of a deal on a 2003 CH613 and it has no Jakes. Was hoping if I bought it I could use what I had instead of buying a new kit.

Welcome to BMT!

...The world's best antique, classic & modern Mack Truck support forum! Founded in 2000, BigMackTrucks.com is the place to go for everything related to Mack Trucks!


BigMackTrucks.com is owned and operated by Watt's Truck Center, New Alexandria, PA. This forum and it's contents are not affiliated with Mack Trucks, Inc. or Volvo Trucks North America.