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Buick engine repair questions and answers

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  • Charliecorner
    Charliecorner - 1998 Buick Century - Engine - 10/14/2010
    Low coolant light is on.
     
    • darkmind
      8/10/2010 darkmind
      Check your coolant level and refill if necessary. Also perform a radiator pressure test to check for leaks in your cooling system.
    • MORRIS
      8/10/2010 MORRIS
      ALSO YOU COULD HAVE A BAD COOLANT TEMP SENDING UNIT THOSE ARE COMMON TO GO BAD ON GM VEHICLES
    • darkmind
      10/14/2010 darkmind
      Did you already diagnose your vehicle with a scan tool to determine if there is a stored trouble code in your vehicle that can help you identify the fault to your vehicle’s problem (if the fault in your vehicle’s problem is one of your electrical control or sensor it will show in your trouble code)? Even if your check engine light is off don’t assume that there’s no stored trouble code in your vehicle, to be certain that there’s no stored trouble code in your vehicle you have to diagnose it with a scan tool. You can visit AutoZone or nearby auto parts store for free diagnostic.
  • Ricko
    Ricko - 2000 Buick Regal - Engine - 10/13/2010
    Engine runs rough after warminfg up. Very inconsistant. Sometime will stall out, but not always.
    I had the car at a good mechanic for 5 weeks. He tests alot. Mass air sensor,Ignition module, and replaced plugs and wires among other things
     
    • Mike
      10/13/2010 Mike
      Is there a check engine light on, and what are the codes?
    • Ricko
      10/13/2010 Ricko
      Mike, No lights on and only once a code came up. The mechanic looked it up and it said it was the
      mass air sensor. Got a new one and put it in. Still failed. Took out and returned.
    • HouseCallAuto
      10/13/2010 HouseCallAuto
      Do you mean that the mass air flow sensor code returned? If so there is still a problem with the MAF sensor circuit, sometimes a broken wire near the connector concealed by the unbroken wire insulation.
      HouseCallAuto
      10/13/2010 Ricko
      Yes , that was the code and it has not reoccurred (the Code) That's the puzzle. No lights and no codes to check. I will check the wire.
    • Mike
      10/13/2010 Mike
      It's hard to diagnose without a code, but check the throttle body, IAC, and fuel delivery system (pressure).
  • slferguson70
     
    • Nissan Technical Advisor
      Did you check if your battery has charge? And if its cables are loose or corroded? How about your spark plugs, when the last time you replace them?
    • Anthony King
      10/13/2010 Anthony King
      coolant in the cylinder,from a leaking head gasket.
  • tom
    tom - 1995 Buick Riviera - Engine - 10/12/2010
    Do I need a special tool to change a Dorman fuel line??
    Quick release at one end of line.
     
    • HouseCallAuto
      10/12/2010 HouseCallAuto
      Tell me the part number of the Dorman kit. What part of the fuel line are you replacing? What has happened to the line?
  • medownes
    medownes - 2000 Buick LeSabre - Engine - 10/12/2010
    I'm unable to get car to pass smog but I'm unsure if the computer is fried as I was told by smog shop/
    2000 Buick Lesabre had check engine light come on right before smog check had to be done so I had a mechanic put a computer code reader on it. I was told that the mass air flow sensor was dirty code was PO 102 & we purchased a spray (MAF sensor cleaning spray)that ...
     
    • HouseCallAuto
      10/12/2010 HouseCallAuto
      I don't think the computer is bad because it is reposting fault codes. A MAF sensor code P0102 is most often solved by replacing the MAF sensor after trying to see if cleaning will do it. Often, the cleaning does nothing. Change the sensor, clear the code and that will likely resolve the issue. The MAF sensor is a critical sensor that if it is bad the engine will run very rich or very lean, either way the vehicle would not pass a smog test in any state probably. Plus, if you took it for a smog test immediately after cleaning it, if the problem is really that the sensor is bad, the emissions test machine when hooked up to your car will see the P0102 has returned or it will see the "computer" as in a "not ready" status meaning that a sufficient drive cycle has not yet finished making the vehicle be essentially disqualified for even attempting an inspection. Change the MAF sensor and I think you will be good. P0102 is a common fault on your vehicle. Remember (just by the slim chance you did not know) the code must be erased AFTER you do a repair to solve a fault code. It will not go away by itself even if the light has gone off.
      HouseCallAuto
      10/12/2010 HouseCallAuto
      You will need a code reader to erase it.
  • joe
     
    • HouseCallAuto
      10/11/2010 HouseCallAuto
      Maybe but that still needs to be properly diagnosed. It is not uncommon for the fuel level sensor in the tank to be faulty and cause inaccurate fuel readings.
  • Nicole
    Nicole - 1991 Buick Roadmaster - Engine - 10/11/2010
    Car won't start cranks normally
     
    • darkmind
      10/11/2010 darkmind
      Did you already check the condition of your battery (cranking amperage/voltage/state of charge) and its terminals/cables, fuel level (and its condition), fuel delivery system components (check if fuel is reaching the fuel injectors, loose connector/faulty fuse, relay or fuel pump), and ignition system components (see if your ignition system produces spark)?
  • Nicole
    Nicole - 1991 Buick Roadmaster - Engine - 10/11/2010
    Won't start cranks normally
     
    • darkmind
      10/11/2010 darkmind
      Did you already check the condition of your battery (cranking amperage/voltage/state of charge) and its terminals/cables, fuel level (and its condition), fuel delivery system components (check if fuel is reaching the fuel injectors, loose connector/faulty fuse, relay or fuel pump), and ignition system components (see if your ignition system produces spark)?
  • Nicole
    Nicole - 1991 Buick Roadmaster - Engine - 10/11/2010
    Won't start cranks normally
    got spark and gas but the plugs stay dry, timing ok
     
    • darkmind
      10/11/2010 darkmind
      Did you also check the condition of your fuel delivery system (check if fuel is reaching the fuel injectors)?
  • Desperate Mother seeking help
    Desperate Mother seeking help - 1990 Buick Century - Engine - 10/11/2010
    Why does my car run fine for awhile then it either cuts off or won't start again for awhile
    I have checked the fuel pump and filter,fuel rail,coil packs, coolant Thermostat,spark plugs & wires,battery made sure it had gas, timing belt relays,starter,oil pressure all normal and conceivable problems. help please !!!!!!
     
  • tom
    tom - 1995 Buick Riviera - Engine - 10/11/2010
    I have a bad fuel line leak in the engine area. I have ordered a Dorman quick release fuel line.
    My ? is how difficult will it be to replace the line? It says I may need a special tool. Is that the only way? If there is an alternative please advise. Thank you for your time.
     
    0 answer
  • obri
    obri - 1990 Buick Electra - Engine - 10/10/2010
    Where is the fuel filter located in a 1990 Buick Electra?
     
  • Rick
    Rick - 2004 Buick Rendezvous - Engine - 10/9/2010
    How do you change sparkplugs on fire wall side of engine
     
  • william langford
    william langford - 1998 Buick LeSabre - Engine - 10/8/2010
    This car runs good but it won't pass inspection. It comes back ''can not read'' for emissions.
    187,000mi-- Symptoms> OBD determines that fuel trim is to high(10.1) not within specs, running to lean.....Replaced Air filter,cleaned (MAF) Mass Air Flow Filter, replaced O2 sensors and fuel pump. fuel pressure good. still reads 10.1 fuel trim from OBD. No visable ...
     
    • HouseCallAuto
      10/8/2010 HouseCallAuto
      Did you replace the fuel filter? You did not mention that, just the pump. If the filter were clogged the engine will run lean. The common items on this engine to cause a lean condition is the mass air flow sensor (just remember that cleaning is no guarantee of a fix. Often, cleaning does not solve a failed sensor. The other common cause is a vacuum leak from the lower intake manifold gaskets and the other is a vacuum leak from the PCV O-ring. Mass air flow sensor comes in first for highest failure rate. It would be wise to clear the PCM learned data (including fuel trims) with a shop grade scan tool. Not sure if there is a way to reset the fuel trims without a professional scanner that has the menu with commands like "fuel trim reset".
  • don
    don - 2004 Buick LeSabre - Engine - 10/8/2010
    2004 lesabre is hard to start. but once you here the fuel pump run it starts easy. is there a check valve at the pump?
    Fuel must be draining back to tank
     
    • darkmind
      10/8/2010 darkmind
      You should check first the condition of your fuel pump relay before you inspect your fuel sending unit. You can visit this link to have an idea how to replace your fuel pump/assembly http://www.automd.com/.../
 
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