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Mackpro

Pedigreed Bulldog
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Mackpro last won the day on January 23

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About Mackpro

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    BMT Certified Know-It-All!

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  1. If your hitting 33 psi of boost then it’s probably not a derate issue due to emissions emissions. Good running MP engines run 33 to almost 40 psi boost. I’ll message for more info.
  2. The early MP equipped conventional truck had a right and left low beam relay. They later did away with them . They are located in the fuse panel by the clutch pedal. They are locate on the bottom far right. They are the small relays one above another. Position R11 and R12 on the fuse panel. There was a recall on the fuse panel for possible water damage
  3. On top of the dash , take the 3 screws out of the triangle shaped fuse panel cover . To the left of the fuse panel there and a cluster of relays and also the flasher. The DRL is usually the tallest of the square relays
  4. If you u plug the turn signal switch does the lights go out? I believe the trolly valve uses the same pressure switch as the foot valve ( by clutch pedal)
  5. T1 need to be twice that before it will start dosing fuel
  6. Mack went through 3 or 4 part numbers/ suppliers of the oil pressure sensors. Mack sent out a bulletin warning that some counterfeit sensors even made it into the parts system. It’s possible you got a bad one
  7. Last I checked, there is no stock at the Mack warehouses and doubt they will be made anymore. Message me your email and I can get you the bulletin. I think it has the earring diagram showing how’s its wired up
  8. Did your T-1 temp every get hot enough to alolow the 7th injector yo start dosing fuel?
  9. A 1994 350 VMAC takes 313GC5205P1 injectors. A non VMAC 350 takes 313GC5188P12 injectors
  10. A 1994 non VMAC EM7 300 takes 313GC5188P10 injectors. The reman number is same but add a X at the end
  11. Is it V-mac or non-V-mac? On the 300 is ask for e-7 300, em7-300 and e7-300 v-Mac and all 3 use different part numbers
  12. If a CXP you can press and hold the button under the dash display and it will reAd out the MID codes
  13. If air fan clutch. You should have 12 volts going to the fan clutch solenoid straight from the fuse box. The other wire ( ground) goes to the engine ecm. The engine ecm makes the ground internally to disengage the fan clutch. When the engine ecm sees hight coolant temp , high AC head pressure or high intake temp it opens the circuit ( takes away the ground ) and the fan clutch engages.
  14. What kind of fan clutch ? Air or electric?
  15. I know they come with 10/30 in them but unsure of the brand . At one time it was Delo 400.
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