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tbi gurus need help

Discussion in 'The Garage' started by dheavychevy38, Dec 19, 2006.

  1. dheavychevy38

    dheavychevy38 1/2 ton status Premium Member

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    Ok have a 91 k2500 replaced the oil switch and fuel pump relay and the fuel pump heres the problem the truck starts runs and then dies say less then a min of running? Need help asap thanks denny
     
  2. scooter122983

    scooter122983 1/2 ton status

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    check all of your vacume lines and the seal between the tb and intake manifold. use either wd40 or a propane torch and just bring the propane near all fittings and if the idle goes up thats your leak. but you need to get the truck running first. but definately check all hoses they can make a big difference.
     
  3. dheavychevy38

    dheavychevy38 1/2 ton status Premium Member

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    it was running fine when we had that last snow it's a plow truck and the next day it started doing this? but i will check all my lines right
     
  4. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    I've had this same problem before and found that the hose to the MAP sensor had come off. Also if the hose is plugged or the sensor is bad it could cause this.
     

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