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Search results

  1. W

    Black smoke at slight or high acceleration stumbles at idle

    Thnx I will try that.
  2. W

    Black smoke at slight or high acceleration stumbles at idle

    No I have not. What kind of things do I check it for? I live in Pawnee 10 miles south of Springfield.
  3. W

    Black smoke at slight or high acceleration stumbles at idle

    Problem: Explain your problem in concise language (ie: Cranks but won’t fire). _It smokes black at the slightest increase in throttle. after driving & coming to a idle in gear it shakes like its missing.It also stutters when going up or down any size hill. The trans shifts in & out of overdrive...
  4. W

    Does changing tire size affect performance?

    Thnx Dan I am trying to do the checklist but I,m not smart enough to copy & paste. I need to paste a big L on my forehead !
  5. W

    where do I find the diagnostic checklist?

    I,m looking for the demographic checklist that I can copy & paste with my info.
  6. W

    Transmission shifts in & out of overdrive

    My 98 GMC 3500 trans shifts in & out of O/D .Even though there is no change in the grade of the road or any other factors that would change the effect on the truck.
  7. W

    Does changing tire size affect performance?

    I had not checked at what speed mine starts doing it but it continues at highway speed.
  8. W

    Does changing tire size affect performance?

    The transmission also goes in & out of overdrive.
  9. W

    Does changing tire size affect performance?

    Thanks. I am having some problems with its general performance. It misses occasionally + when I go up + down hills. Does it make a diff if it is not level? I still have the 225,s on the front.
  10. W

    Does changing tire size affect performance?

    I have a 98 GMC 3500 will putting taller tires on it have any effect on the performance of the engine? I went from 225/75/16 to 265/75/16? Thanx in advance for your help.
  11. W

    Truck loses power/throttle response on hills

    I have removed the cat converter. Installed the pmd in the bumper.Put a # 9 resistor @ the pmd.Cold air kit. It is more evident when the fuel is low. No check engine light.I don,t have a boost gauge.I don,t see any smoke.89K miles.Thanx for responding Buddy !!
  12. W

    Truck loses power/throttle response on hills

    My 98 Chev 3500 w/ 6.5 loses power & throttle response when going up or down hills. Thanx in advance for your help!
  13. W

    How do I test my glow plugs??????

    How can I test the glow plugs on a 2000 6.5? Having some occasional starting issues.Thanx
  14. W

    What are these resistors that improve perf.

    I see this guy selling these little black 2-wire boxes on ebay that boast improved horse power & fuel economy. I checked his feedback & several people stated that it was just a resistor that can be purchased from Radio Shack. I had another guy tell me about putting a resistor on my Peterbilt to...
  15. W

    Pmd grounding???

    The pmd itself Justin
  16. W

    Pmd grounding???

    Does the body of the pmd have to be grounded? I made a ext cable when I changed the pmd after the truck would not run right, now it wont start at all.
  17. W

    How to make a pmd extension cable

    THANX!!!!
  18. W

    Best place to mount pmd???

    Is the air intake on the front bumper a good place to move the pmd to?
  19. W

    How to make a pmd extension cable

    Hi,can the wires to the pmd be cut and extension wires be soldered in between ?
  20. W

    pmd replacement

    Hi, can someone tell me the easiest way to remove the pmd on a 98 6.5.
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