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Speed sensor

Discussion in 'The Garage' started by fparker, Jul 22, 2005.

  1. fparker

    fparker Newbie

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    Location:
    Jacksonville, Fl.
    I need to find out what pulse output speed sensor to use on my 1990 Burban,
    I am running the TBI and ECM. The drive train is from a 1984- TH400 with 208 transfer case.
    What does the stock 3/4 Ton 90 model use for driving the ECM? Can I buy one off of the shelf to plug into my speedometer gear in the transfer case?
     
  2. eagle mark

    eagle mark 1/2 ton status

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    North Idaho!
    You can program the VSS out of the chip and not use it on TBI!

    AFI does sell a VSS to hook up to the speedometer drive. I do not know what the pulse is, if you must know call the shop and ask for Norm. But a chip would be cheaper than a VSS and you can get rid of other things as well with it.
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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  4. Thunder

    Thunder 3/4 ton status

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    Northeast Nevada
    You can get a VSS from: turbocity.com They are at the bottom of the page.
    Or get a chip programed as said above. So you can dump the torque convertor loc up and egr .Wont really need those with the swap.
    Not sure if you can get a chip burned for less than $100
    maby someone will give you a deal just to disable what you dont need.
    Its not really hard to do.
     
  5. eagle mark

    eagle mark 1/2 ton status

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    Location:
    North Idaho!
    Affordable Fuel Injection chips are $95.

    Also look in the vendor section for a CK5 discount! :D
     
  6. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    Location:
    Melvindale, Michigan
    the 90 has a DRAC, so to make your speedo work, you need to input 40 pulse per driveshaft revolution
     

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