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Thread: stepper motor

  1. 01-13-2019, 09:40 #1
    phantom309
    phantom309 is offline Enthusiast
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    Default stepper motor

    I'm currently in slave lake AB doing a project here for the winter,
    I haven't been happy with this engine's performance in my 99 c2500 burban,.
    so poking around has led me to the stepper motor, it does'nt move, so on the bench i put power to the pins, it hiccups slightly in one direction but not the other. Somebody had messed with this stepper and used it to wedge the pump advance arm/lever into one spot.
    I had my suspicions last summer when a friend tried to set the timing with his fancy tech computer, and every time the engine had a coniption and we'd cancel the command. It has never set an SES code. It does now i have the stepper unhooked, it fires up fine, i can move the advance manually and it definitely makes a huge difference. The engine does not sound over advanced or retarded, just sounds ok with stepper off

    Does anyone have a good stepper motor they would part with?

    thanks
    1999 chev suburban C2500
    300,000 mi
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  2. 01-24-2019, 23:03 #2
    phantom309
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    Default

    thanks for the underwhelming responses,.

    i got a stepper,.truck starts better now.

    carry on
    1999 chev suburban C2500
    300,000 mi
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  3. 01-25-2019, 08:33 #3
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    Robyn
    Robyn is offline Missy Good Wench ( Moderator)
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    Default

    Glad you got the issue fixed.

    Generally most folks are not going to get that far into the injection on these..

    (Take pump to inj shop and have it rebuilt is the usual action)

    Sorry you got such limited response, but only a few even know what/where the stepper is located.

    Be safe...stay warm
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2005 Suburban (Papa Smurf)
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  4. 02-22-2019, 19:34 #4
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    leo5150
    leo5150 is offline Enthusiast
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    Default

    Or to be honest what it is..... like me
    1986 K5 Blazer (Restoration in progress): stage II racing "K" transmission with +4 quart pan, Banks turbo, new GP’s, 3rd rebuilt IP, Rebuilt injectors, Stud Grille, Aluminum Radiator, Halogen light upgrade, fog lights, and added factory Cruise and rear power window

    1996 GMC Suburban K2500 6.5l diesel (Restoration in progress). Running on a DB2 IP, new GP’s, rebuilt injectors, rebuilt transmission with +4 quart pan, dibble din GPS radio, USB and 12v charging in the door pullers, Chasing down the wire gremlins at the moment.......

    I think I’m a glutton for punishment
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  5. 02-23-2019, 12:06 #5
    JohnC's Avatar
    JohnC
    JohnC is offline Proud Deplorable
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    I guess I could have posted: "Don't have one, sorry..."
    The Constitution needs to be re-read, not re-written!

    If you can't handle Dr. Seuss, how will you handle real life?

    Current oil burners: MB GLK250 BlueTEC, John Deere X758
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