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Threw a code

Discussion in 'The Garage' started by sandawgk5, Feb 23, 2006.

  1. sandawgk5

    sandawgk5 3/4 ton status

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    I was cruising around the other day and threw a code, it only happens at a certain throttle position. The code is Low TPS Voltage. I have done no other troubleshooting and I have to assume this is the original from 1987. Should I just buy one from the parts store of your choice and replace it or is it possible to adjust it.

    The code comes and goes and it seems to always be at the same throttle postion almost as if the resistor is damaged from use in one spot.

    Thanks

    Ira
     
  2. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

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    sounds like its time to replace it :)

    Betcha you get a way better throttle response with a new one -- I imagine this one is probally fairly low across the board...
     
  3. sandawgk5

    sandawgk5 3/4 ton status

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    ?

    Ira
     
  4. lamberthkp

    lamberthkp SITFU Premium Member

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    i'd just replace it there not that much.
     
  5. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    He means, if it's got low voltage across the board (across the sweep), it isn't juicing the engine correctly for the amount of throttle input you got on it....so you'll get better performance with a new one.
     
  6. sandawgk5

    sandawgk5 3/4 ton status

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    K was confused about the low across the board. I guess I gotta go get me a new one:o .

    Ira
     
  7. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

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    Exactly!

    As these things get older, their resistances increase, so it doesn't send accurate throttle position data to the computer :)
     
  8. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    Much like my 20 year old headlight switch/dash light dimmer. New switch, cleaned contacts and grounds - which caused my headlights and dash lights to get about 50% brighter! :D Now to get that HD light harness and the Hella H4/H1 upgrade installed...
     
  9. Leper

    Leper 1/2 ton status

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    Hijack.
    How do you get the codes for a 91 Blazer? My service engine soon light has come on a few times in the last 3 days.
    Hijack off.
     

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