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I Need Help With my TBI Injection Hesatating

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by pplblazerdude, Nov 22, 2002.

  1. pplblazerdude

    pplblazerdude 1/2 ton status

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    I have a 88 fullsize blazer and it has a 350 with a tbi and when i stop and bearly hit the gas anuff to just get it to putter the truck starts to hesitate i mean it will start to act liek it is going to die and jerk along but once i get going it runs good does anone know why it does this if so plz help me. /forums/images/graemlins/k5.gif
     
  2. unsane

    unsane Guest

  3. Derf00

    Derf00 1/2 ton status

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    When was the last time you replace the fuel filter?
     
  4. fortcollinsram

    fortcollinsram 1/2 ton status

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    I second the fuel filter..my K% ran like crap until I found that the fuel filter was plugged solid with crap...Replace the fuel filter, run som BG 44K through it and see if that helps...

    Chris
     
  5. husurddy

    husurddy 1/2 ton status

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    My (87 tbi) hesitated on initial acceleration and it drove me crazy for a while. I was stumped because I had a fresh tune-up, EGR and 02 sensor, filters ect. Come to find out my new EGR was sticking. I took it back and replaced it and viola, problem solved. /forums/images/graemlins/grin.gif …Bryan
     
  6. YtseJam

    YtseJam 1/2 ton status

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    check for a restricted fuel filter or low fuel pressure. If that is ok and your ignition system is well tuned, I would check the TPS.
     
  7. thebigdaddyof2

    thebigdaddyof2 1/2 ton status

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    If the EGR valve isn't sticking (or stuck), replace the IAC solenoid. Cheap and easy fix.
     
  8. YtseJam

    YtseJam 1/2 ton status

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    If the EGR valve was sticking or stuck, it would stumble and idle rough. The IAC will not cause the hesitation. If anything the IAC will give you a high, low or hunting idle speed if there is a problem or a vacuum leak.
     
  9. thebigdaddyof2

    thebigdaddyof2 1/2 ton status

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    Wow.
    By the way he describes his problem, it is stumbling.....
     

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