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Buick engine repair questions and answers

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  • jandmgriffin
    jandmgriffin - 2009 Buick Enclave - Engine - 3/19/2015
    Why did the Stabilitrak light and check engine light come on after changing out spark plugs and CV axle?
    I have a 2009 Buick Enclave with 108,000 miles. Had the transmission replaced 4 months ago. The check engine light came on last week as a misfire in cylinder 4. We replaced the coil on cylinder 4 and still had the check engine light misfire at coil 4. So we replaced ...
    0 answer
  • Denise
    Denise - 2001 Buick LeSabre - Engine - 3/14/2015
    What does it mean when check engine light goes from being on steady to blinking? Then there is a smell of burning wires.
    From the auto stor I received these codes: P0300; P0404:P1404; P0128;P0302 Can any of theses issues be fixed without going to an auto repair shop?
    • Jimm
      3/14/2015 Jimm
      Cannot state whether any of these issues can be fixed/repaired at home - depends on diagnostic and repair skills.

      P0300 = Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or un-metered air getting past the airflow sensor, or an EGR valve that is stuck open.

      P0404 - Exhaust Gas Recirculation Control Circuit Range/Performance. P0404 indicates that the feedback circuit sends signals to the PCM that the EGR valve is not functioning according to the command of the PCM.

      Here are the possible cause of P0404

      * Short or open in the ground circuit
      * Short or open in the reference circuit (feedback circuit)
      * PCM controlled circuit voltage short or open

      Possible Solution

      o Repair or replace the ground circuit/wires
      o Repair or replace the wirings/connection in the reference circuit (feedback circuit)
      o Repair or replace PCM controlled circuit voltage wirings/connections

      P0302 - Cylinder 2 Misfire Detected. P0302 means that cylinder two is misfiring. A misfire occurs when there is incomplete combustion inside the cylinder.

      Possible Causes:

      Vacuum leak
      Defective fuel injector
      Defective ignition coil pack
      Insufficient compression
      Defective high tension wire or spark plug

      Possible Solutions:

      Repair vacuum leak
      Replace defective injector
      Replace defective ignition coil pack
      Replace burnt exhaust valve
      Replace defective high tension wire or spark plug

      P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). P0128 indicates the engine has not achieved the optimum temperature within the specified amount of time.

      Possible Causes:

      Low coolant level
      Stuck open thermostat
      Defective engine coolant temperature (ECT) sensor
      Defective intake air temperature (IAT) sensor
      Defective cooling fan
      Defective cooling fan relay

      Possible Solutions: Most typical repair is to replace the thermostat as first step.

      Top off coolant
      Replace thermostat
      Replace engine coolant temperature (ECT) sensor
      Replace Intake air temperature (IAT) sensor
      Replace cooling fan

      P1404 = EGR Close Position Performance

      Possible Causes:
      5 volt supply circuit high resistance
      EGR signal circuit high resistance
      Sensor ground circuit high resistance
      Ground circuit high resistance
      EGR control circuit high resistance
      EGR signal circuit shorted to ground
      Exhaust gas recirculation valve
  • Mr. John
    Mr. John - 2001 Buick Century - Engine - 3/12/2015
    Won't restart after just shutting down . Has plenty of cranking power but won't fire up.
    Seems like something is not resetting quickly. This usually happens when stopping at a convienience store (WaWa) and getting right back in and trying to start. If you wait a short time (about 15 minutes) it starts right up like there was never anything wrong.
    • D & E White
      3/12/2015 D & E White
      Sounds like your charging system. Does your car make any noise when you try to start it? That can tell you a lot about what us going on. Typically your symptoms show that your battery mat not be getting recharged by your alternator, leaving it with low amperage. When you turn your key to start the car, your starter (and solenoid) require a big charge from the battery to start the car. While the car is running, the alternator is supposed to recharge the battery back to full power/charge. A lot of short trips can drain your battery. If there us a clicking noise, when you try to start your car, it is an indication that your starter is good (the noise is the solenoid contacts trying to work(. If there is no noise or it sounds "slow" then I'd check the battery and alternator. Does your car take a jump easily? Anyway, you should have your mechanic check it out for you before the car dues in the middle of nowhere, leaving you stuck on the side of the road.
  • david camp
    david camp - 2001 Buick Park Avenue - Engine - 3/9/2015
    Why does my car not want to idle or stay running after it ran out of fuel.
    i have replaced fuel filter and seems like it helped a little but it still does not want to idle or stay running unless i give it a little gas to keep rpm up. It almost seems like it chokes itself out when i give it gas to keep it running.?
    0 answer
  • R Wilcox
    R Wilcox - 2001 Buick LeSabre - Engine - 3/7/2015
    My buick will not start. I have to put my left foot on the brake, shift into neutral, then start up the car and rev it u
    I rev the car up when starting. After 4 or 5 attempts it will start. There is a hesitation when I put the accelerator down also. There is a new kind of bubbling sound right in front of the driver. Thermostadt, EGR valve and gasket, Ignition coil, mass air flow ...
    0 answer
  • jeff
    jeff - 1995 Buick LeSabre - Engine - 2/25/2015
    What are possible fuel problems with this model?where is the computer located
    installed new fuel pump and fuel filter.installed new camshaft positu ion sensor
    0 answer
  • Pat Hobbs
    Pat Hobbs - 1996 Buick Park Avenue - Engine - 2/24/2015
    Why does my oil pressure fluctuate
    My check engine light is on and when the engine is warm and I am stopped the oil pressure drops a fair bit. There is no noise or smell and I have owned this since new. It now has 186,000kms on it and other than this it is in MINT condition. I have checked the fuel ...
    0 answer
  • Pat Hobbs
    Pat Hobbs - 1996 Buick Park Avenue - Engine - 2/24/2015
    Why does oil pressure fluctuate
    My check engine light is on and when my car is warm and when stopped my oil pressure drops a fair bit. What am I looking at for repair, my husband thinks it is the crankshaft bearings. What do you think? It has 186,000 kms on it. Ultimately if this is the problem ...
    0 answer
  • chris1901
    chris1901 - 2001 Buick Century - Engine - 2/22/2015
    I replace my fuel pump my crank sensor my throttle body on my 2001 Buick Century Link wont crank it ran for 1 week and n
    I also replace my fuel pump relay fuse I also replaced my battery is well
    0 answer
  • rob1macho
    rob1macho - 2002 Buick Century - Engine - 2/21/2015
    Slow turn over starting vehicle
    When I start the car it turns over slow like it wants to stop but it luckily starts all the sudden. I had a mechanic change the battery a year & half ago. It's been very cold here in N.Jersey.
    0 answer
  • DJDougherty
    DJDougherty - 1988 Buick Reatta - Engine - 2/19/2015
    Engine wont start when outside air is under 20 degrees
    1988 Buick Reatta 3.8 , changed plugs and wires, crankshaft position sensor, fuel filter, put in dry gas ,it does try to start, have to heat engine with hot air gun for 30 min then it will start and run fine. the next day same problem if outside temp under 20. car ...
    0 answer
  • DJDougherty
    DJDougherty - 1988 Buick Reatta - Engine - 2/19/2015
    Engine wont start if outside temp is under 20 degrees
    Engine trys to start, i changed plugs and wires, fuel filter, crankshaft position sensor, put in dry gas, if i put heat on engine with heat gun for 30 mins it will start and run fine.i also tryed disconnecting temp sensor, and did the same with MAP sensor, still no ...
    0 answer
  • Chris
    Chris - 2000 Buick LeSabre - Engine - 2/17/2015
    Car starts up fine, just doesn't stay running. Just changed al the spark plugs, wires, and ignition coils.
    After starting it spits and sputters and then stalls. Won't start right back up, but it will after it sits for a little while. Seems to me like its getting to much fuel, just not sure why!
    • kyle
      2/17/2015 kyle
      pull a spark plug and see if its dripping with fuel, also turn car to on position and listen to see if your fuel pump is kicking on may be a lack of fuel. also had a similar problem with a metro ended up being timing belt wasnt getting any compression
  • jayandmaryblackburn83
    jayandmaryblackburn83 - 1990 Buick Regal - Engine - 2/3/2015
    My car stopped running as I was driving, I pulled over and restarted and drove home, then let it sit and run for 5min th
    Shut it off. The next day it would turn over but not start
    0 answer
  • Laura McFaul
    Laura McFaul - 1994 Buick Park Avenue - Engine - 2/2/2015
    When I put my car into park, it sounds like the engine is revving and RPM's go up to 2, and I am no where near the pedal
    I drove it an hour today on the high way to go back home from visiting family. My check engine light has always been on, so I am not sure if that helps. Recently my dad had to replace a brake line and my transmission leaks slightly. It is the first time I noticed ...
    • Zolen
      2/2/2015 Zolen
      I would check the throttle body to make sure it's closing properly, and nothing is stuck in there. If it checks out ok, I would suspect the idle air control valve.