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Buick engine repair questions and answers

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  • Randy
    Randy - 2010 Buick LaCrosse - Engine - 11/17/2014
    Why do I smell gasoline when operating my car?
    75000 miles...take longer to start than it should also
     
    0 answer
  • Jonathan & MJ
    Jonathan & MJ - 1990 Buick Century - Engine - 11/14/2014
    Engine runs for about 20 minutes then shuts down.
    New plugs, ignition wires, coils and ignition module.
     
    0 answer
  • Wes
    Wes - 2007 Buick Rendezvous - Engine - 11/13/2014
    My 2007 Buick rendezvous sometimes will start and sometimes it won't. Also, it sometimes stalls without warning.
    Reduced engine power message appears. It is not all of the time. Has there been a recall for this model for this problem?
     
    0 answer
  • AlexL
    AlexL - 1990 Buick LeSabre - Engine - 11/13/2014
    Why won't my car start?
    So, when the engine is cold the engine will start just fine. When you run the engine for a while, and shut off, then go to turn it back on, it will turn over once, sputter, the continue turning over healthy. After letting the car sit for about four hours, and the ...
     
  • paul
    paul - 2004 Buick LeSabre - Engine - 11/13/2014
    Engine cranks fine but wont start----not getting spark---suspect ignition problem---possibly atm anti theft module......
    2004 Buick LeSabre Custom 6 Cyl 3.8L Question engine turns over fine but no spark---suspect ignition problem or anti theft control module problem Additional Details (recommended) my buick has about 80k miles...came home for lunch for a few minutes and went back ...
     
    • judd0081
      11/13/2014 judd0081
      The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.

      http://www.diy-gm-security.com/
  • Jen
    Jen - 1994 Buick Roadmaster - Engine - 11/10/2014
    Something keeps training my battery replaced two new batteries and still I have to be jumped not leaving the lights on b
    Also shortly after the air conditioning stopped working in my car just wouldn't start wasn't the battery so we tried to to bypass the air-conditioner because it was broke so it finally started but is driving like the timing… is off or something go on and then ...
     
    0 answer
  • Jen
    Jen - 1994 Buick Roadmaster - Engine - 11/10/2014
    Something keeps training my battery replaced two new batteries and still I have to be jumped not leaving the lights on b
    Also shortly after the air conditioning stopped working in my car just wouldn't start wasn't the battery so we tried to to bypass the air-conditioner because it was broke so it finally started but is driving like the timing… is off or something go on and then ...
     
    0 answer
  • reed
    reed - 1994 Buick Park Avenue - Engine - 11/9/2014
    What is the size of fuel line i need?
    i need the diameter foe the fuel line so i can cut out bad spot and replace it
     
  • deborah
    deborah - 1990 Buick Regal - Engine - 11/8/2014
    Dies when I put it into gear. On occasion will want to go at excessive speed.
    Replaced IAC valve. Thought it might be an idle problem, but it just dies when put into gear
     
    • GT500Knights
      11/8/2014 GT500Knights
      Check throttle valve linkage. It may be out of adjustment. Also check for proper tcc operation....sometimes they can stick and cause the problem you're having.
  • deborah
    deborah - 1990 Buick Regal - Engine - 11/8/2014
    Dies when I put it into gear. On occasion will want to go at excessive speed.
    Replaced IAC valve. Thought it might be an idle problem, but it just dies when put into gear
     
    0 answer
  • deborah
    deborah - 1990 Buick Regal - Engine - 11/8/2014
    Dies when I put it into gear. On occasion will want to go at excessive speed.
    Replaced IAC valve. Thought it might be an idle problem, but it just dies when put into gear
     
    0 answer
  • deborah
    deborah - 1990 Buick Regal - Engine - 11/8/2014
    keeps dieing when I put it in gear? Also on occasion it will take off like as if in the Indy 500! w/o my control
    It starts just fine, but when I put it in gear it just dies. If I happen to be able to go, as soon as I have to slow or stop..it dies. Replaced the IAC valve, but it made no difference.
     
    0 answer
  • Tejo
    Tejo - 2000 Buick Century - Engine - 10/28/2014
    How do I get to the Thermostat Housing Bolts on a 2000 Buick?
    Re: 2000 Buick Century 3.1L 120,000m I‘m having problems replacing the thermostat on my 2000 Buick Century. I can’t remove the Upper Bolt on the Thermostat Housing; I don’t know if it’s frozen in place or, I just can’t reach it well enough to get a ...
     
    • Jimm
      10/28/2014 Jimm
      The thermostat on this 3.1L is mounted horizontally and uses an offset housing / water outlet - mounted under the throttle body.

      Disconnect the negative battery cable.
      Partially drain the cooling system into a suitable container, to a level below the thermostat.
      It is usually possible to leave the radiator hose attached and simply remove the thermostat housing (also called a water outlet) and flex the radiator hose enough to service the thermostat.

      It is good practice, however, to remove the radiator hose so the thermostat housing can be given a thorough cleaning. Debris on the thermostat housing sealing surface can cause leaks.
      Some applications may have electrical connections to sensors which mount in the thermostat housing. Use care when detaching these connectors.
      Unfasten the thermostat housing bolts and remove the housing. It maybe necessary to first remove the throttle body in order to access the thermostat housing bolts.
      Remove the thermostat by simply pulling out. Discard the gasket.

      To install:
      Clean all parts well. Make sure the sealing surfaces on both the thermostat housing gasket flange and the intake manifold are clean and free of corrosion damage. It is good practice to run a thread cutting tap or a clean bolt into the threaded holes in the manifold to clean out old sealer and dirt. The threads should be clean so the thermostat cover clamps the gasket evenly at assembly.
      Position the thermostat in the intake manifold. Make sure it is seated.
      Position a new gasket over the thermostat. If no gasket is used, apply a 0.125 in. (3mm) bead of RTV sealer to the thermostat housing and install the housing. Lightly lubricate the bolts with clean engine oil. Torque to 18-20 ft. lbs. (23-27 Nm).
      If removed, attach the radiator hose to the thermostat housing.
      Refill the engine with the proper mix of 50/50 anti-freeze and water. Connect the negative battery cable, start the engine and check for leaks.
  • Tejo
    Tejo - 2000 Buick Century - Engine - 10/28/2014
    How do I get to the Thermostat Housing Bolts on a 2000 Buick?
    Re: 2000 Buick Century 3.1L 120,000m I‘m having problems replacing the thermostat on my 2000 Buick Century. I can’t remove the Upper Bolt on the Thermostat Housing; I don’t know if it’s frozen in place or, I just can’t reach it well enough to get a ...
     
    • Jimm
      10/28/2014 Jimm
      The thermostat on this 3.1L is mounted horizontally and uses an offset housing / water outlet - mounted under the throttle body.

      Disconnect the negative battery cable.
      Partially drain the cooling system into a suitable container, to a level below the thermostat.
      It is usually possible to leave the radiator hose attached and simply remove the thermostat housing (also called a water outlet) and flex the radiator hose enough to service the thermostat.

      It is good practice, however, to remove the radiator hose so the thermostat housing can be given a thorough cleaning. Debris on the thermostat housing sealing surface can cause leaks.
      Some applications may have electrical connections to sensors which mount in the thermostat housing. Use care when detaching these connectors.
      Unfasten the thermostat housing bolts and remove the housing. It maybe necessary to first remove the throttle body in order to access the thermostat housing bolts.
      Remove the thermostat by simply pulling out. Discard the gasket.

      To install:
      Clean all parts well. Make sure the sealing surfaces on both the thermostat housing gasket flange and the intake manifold are clean and free of corrosion damage. It is good practice to run a thread cutting tap or a clean bolt into the threaded holes in the manifold to clean out old sealer and dirt. The threads should be clean so the thermostat cover clamps the gasket evenly at assembly.
      Position the thermostat in the intake manifold. Make sure it is seated.
      Position a new gasket over the thermostat. If no gasket is used, apply a 0.125 in. (3mm) bead of RTV sealer to the thermostat housing and install the housing. Lightly lubricate the bolts with clean engine oil. Torque to 18-20 ft. lbs. (23-27 Nm).
      If removed, attach the radiator hose to the thermostat housing.
      Refill the engine with the proper mix of 50/50 anti-freeze and water. Connect the negative battery cable, start the engine and check for leaks.
      Jimm
      10/28/2014 Tejo
      THANKS Jimm
      It appears the only way to get at the Therm Housing bolts is to remove the Throttle Body or remove the black and silver pipes.
      I removed just about everything from the Throttle Body, except the lower right Stud Bolt. I used vice-grips on the stud bolt (with a thin sheet of rubber to protect the threads) but it wouldn't budge. Is there a trick to removing the stud bolt?
      Would it be easier to remove the black and silver pipes instead? What are these pipes and how would I remove them?
  • Dennis
    Dennis - 2000 Buick LeSabre - Engine - 10/26/2014
    What causes my engine to die at idle or decelaration to slow RPM?
    Once the RPM is = to or close to cruise RPM engine runs great. When first starting a cold engine it runs and idles great. After 5 - 10 minutes at idle it surges a couple of times then hard to start and can only keep it running by getting RPM to 1500 or above.