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99 Suburban has no power

This is a discussion on 99 Suburban has no power within the Technical / Maintenance forums, part of the General Discussion category; My Suburban (130,000 miles) will idle ok but when you press the throttle it sputters and will rev to about ...

  1. #1
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    99 Suburban has no power


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    My Suburban (130,000 miles) will idle ok but when you press the throttle it sputters and will rev to about 3k rpm and will sputter out until you let off the gas then you can rev it back up. While Driving it wont get above 2k rpms, without any reason it will just bog down like somebody cut off the fuel supply, i can put it in neutral and turn the key off and wait for the speedo to fall then count to ten and restart and it will SLOWLY but gradually return to 2k rpms. When it sputters it sometime comes back through the air intake box.

    What i have done so far;
    MAF Sensor
    Fuel filter (did this once before and this worked)a few times
    DPFI to MPFI conversion (with fuel pressure regulator)
    Catalytic converter

    The Current Codes;

    P0131 o2 sensor low Volts bank 1 Sensor 1
    P0151 o2 sensor low Volts bank 2 Sensor 1

    p0171 Fuel trim too lean bank 1
    p0174 Fuel trim too lean bank 2

    p1133 Heated Oxygen Sensor insufficient switching bank 1 sensor 1
    p1153 Heated Oxygen Sensor insufficient switching bank 2 sensor 1

    Any help is greatly appreciated.

    Thanks
    Travis

  2. #2
    Registered User JoeTech's Avatar
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    Re: 99 Suburban has no power

    What i have done so far;
    MAF Sensor
    Fuel filter (did this once before and this worked)a few times
    DPFI to MPFI conversion (with fuel pressure regulator)
    Catalytic converter
    Was this stuff done to try to solve the problem? If not then when were all these repairs made. Also did this problem start all at once? or a little bit over time.
    ASE Certified Technician
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    97 Chevy C1500--02 Chevy K1500--69 Chevelle--69 Volkswagen Beetle

    "Educate and inform the whole mass of the people... They are the only sure reliance for the preservation of our liberty"
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    Re: 99 Suburban has no power

    Actually i had a problem a year or so ago, where it sputtered out and died on me after the fuel got low, so i replaced the in-line filter on the drivers side and it was fine for a long time. Then it seemed like a few months back it started to quickly take a dive, i changed the fuel filter again and it didn't really help. I Changed these parts to solve the problem. I changed these particular parts (except for the catalytic converter) based what i had read from others who had similar symptoms.

  4. #4
    potato gon' potate SlvrdoHDmax's Avatar
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    Re: 99 Suburban has no power

    Sounds like a weak fuel pump. You should probably check the fuel pressure

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  5. #5
    Registered User JoeTech's Avatar
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    Re: 99 Suburban has no power

    Ok you need to check fuel pressure. It MUST be 60-66psi. All those codes are a caused by a lean condition.
    ASE Certified Technician
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    Re: 99 Suburban has no power

    ok ill check the fuel pressure, but if i have to change the fuel pump which pump should i go with, Bosch, Delco, Delphi, or Carter

  7. #7
    Registered User JoeTech's Avatar
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    Re: 99 Suburban has no power

    If it's your pump go with a delphi or Airtex. I use Airtex all the time with no problems and you get the updated plug. I don't know about bosch pump, and only buy a Carter pump if you like to hang out on the side of the road with a dead truck and if you just love to change pumps all the time!LOL
    Last edited by JoeTech; 12-07-2010 at 08:40 PM.
    ASE Certified Technician
    California Smog Check Technician
    97 Chevy C1500--02 Chevy K1500--69 Chevelle--69 Volkswagen Beetle

    "Educate and inform the whole mass of the people... They are the only sure reliance for the preservation of our liberty"
    Thomas Jefferson

    www.CampaignforLiberty.com

 

 

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