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Buick engine repair questions and answers

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  • paul
    paul - 2004 Buick LeSabre - Engine - 10/1/2014
    Engine turns over fine but no spark---suspect ignition problem or anti theft control module problem
    my buick has about 80k miles...came home for lunch for a few minutes and went back to car and it cranks fine and is getting fuel but apparently no spark---i pulled spark plug wire and inserted nail and see no spark and i can smell the unburned fuel when i crank the ...
     
    0 answer
  • tim
    tim - 2000 Buick Regal - Engine - 9/29/2014
    How to take out the radiator so i can change it
    i need to know how the radiator comes out
     
    • Jimm
      9/29/2014 Jimm
      Remove headlamp fascia panel support bracket fasteners with 4 bolts.
      Remove brackets --2 of them.
      Remove radiator support brackets -- 2 of them.
      Remove air cleaner assembly.
      Remove the upper tie bar fasteners, 4 bolts with heads on engine side. Remove tie bar.

      Remove hoses.
      Remove oil cooler pipe bracket bolt from LOWER tie bar, under the radiator lower hose.
      Remove cooling fans.

      Slide plastic cap off transmission oil cooler pipe quick connect fittings.
      Disconnect upper and lower cooler pipes
      Remove AC condenser mounting bolts--one on each side holding AC to the radiator bracket.
      Lift radiator up and out.
  • Gregs Home Repair
    Gregs Home Repair - 2000 Buick Regal - Engine - 9/29/2014
    Why my vehicle will not start unless you shake or move the gear selector?
    The vehicle has 120.000 miles. It has begin to die out sometimes while driving. It doesn't happen all the time. The problem begin about a month ago, its was starting fine until today it begin to act as if no current is getting to starter. I can move the gear ...
     
    • jdl
      9/29/2014 jdl
      Maybe a problem with neutral safety switch? Also, check for slack in the shift cable.

      Does it crank better, neutral vs park position?
  • LWorthy
    LWorthy - 2004 Buick LeSabre - Engine - 9/29/2014
    The first thing in the morning when I put in Drive it takes a while before it will go even with my foot is on the gas.
    Mileage is about 160,000, the replace gas cap warning light is on. When driving at slow speeds it sounds like it hesitates switching into gear. The check engine light is on
     
    • Jimm
      9/29/2014 Jimm
      First step - have the stored fault codes or check engine light scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific code for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.

      Possible Causes of Engine Hesitation or Stumble:

      Dirty fuel injectors (cleaning the injectors often fixes this)
      Dirty air filter (change filter)
      Dirty / clogged fuel filter (change filter)
      Bad MAP (manifold absolute pressure) sensor
      Bad TPS (throttle position) sensor
      Bad or dirty MAF (mass airflow) sensor
      Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
      Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
      Bad gasoline (fuel contaminated with water or too much alcohol)

      Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

      Dirty or worn spark plugs
      Bad plug wires
      Weak ignition coil
      Wet plug wires
  • lionesss8
    lionesss8 - 1996 Buick Century - Engine - 9/25/2014
    Can i add a little regular oil to top off synthetic oil?
    my oil is a little low because of an oil leak i need to get fixed, i never used synthetic oil before but the last guy that did work on my car put synthetic oil in it. can i add a little regular oil with the synthetic, simply because i have some regular on hand.
     
    • Jimm
      9/25/2014 Jimm
      Yes, will not harm anything.
  • Paul
    Paul - 1998 Buick LeSabre - Engine - 9/25/2014
    When I turn the ignition nothing happens, but I have lights, radio and dome light. But vehicle does not start.
    When I turn the ignition on I should be getting lights on across the dash, like Check Engine and others, but that is not happening.
     
    0 answer
  • Forzoma
    Forzoma - 1990 Buick LeSabre - Engine - 9/24/2014
    90 Buick LeSabre runs rough and sounds like it has no oil (loud and choppy) but has oil.
    I have a 1990 Buick leSabre Custom after driving with no issue, i downshifted to 2nd to pass a car afterwords it became very rough as if there was no oil, after checking all the fluids and seeing no issue i let it cool down before driving, started up fine but with a ...
     
    0 answer
  • rbsutherland
    rbsutherland - 2005 Buick LeSabre - Engine - 9/21/2014
    My car stumbles intermittenly,
    My car has 75000 miles on it. In the last 4 months it has stalled while driving and will not start. After 2 new ignition control modules, 2 new crankshaft position sensors and new ignition control modules the 3rd set it no longer stalls completely. However I get a ...
     
    • Jimm
      9/21/2014 Jimm
      First step - have the stored fault codes or check engine light scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific code for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.

      Possible Causes of Engine Hesitation or Stumble:

      Dirty fuel injectors (cleaning the injectors often fixes this)
      Dirty air filter (change filter)
      Dirty / clogged fuel filter (change filter)
      Bad MAP (manifold absolute pressure) sensor
      Bad TPS (throttle position) sensor
      Bad or dirty MAF (mass airflow) sensor
      Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
      Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
      Bad gasoline (fuel contaminated with water or too much alcohol)

      Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

      Dirty or worn spark plugs
      Bad plug wires
      Weak ignition coil
      Wet plug wires
  • Gary Clark
    Gary Clark - 1991 Buick Park Avenue - Engine - 9/14/2014
    Car will not start. Doesn't seem to have any spark. It just grinds when trying to start it. Starter has been replaced.
    Before the car stopped running the motor ran rough as if it was missing. The check engine is not on.
     
    • Jimm
      9/14/2014 Jimm
      First question - is there spark at the plugs? If yes,then is there fuel to each cylinder? Need to answer / establish basic conditions as the first steps.
  • jbours02
    jbours02 - 2005 Buick LeSabre - Engine - 9/14/2014
    Loud engine knocking/shaking
    I'm experiencing loud engine knocking and shaking as well as a strong gasoline smell. The check engine light is on solid, but blinks while driving. There is also very little power while driving; the gas pedal is to the floor and acceleration is very minimal.
     
    • Jimm
      9/14/2014 Jimm
      The check engine light is located on the dash and stays on if the computerized engine control system detects an engine performance or emissions problem.

      First step - have the stored fault codes or check engine light scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific code for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.
  • Pete Stone
    Pete Stone - 2002 Buick Regal - Engine - 9/11/2014
    Car starts but dies shortly after
    has new filter and fuel pump
     
    0 answer
  • badgirlhero
    badgirlhero - 1996 Buick Century - Engine - 9/10/2014
    Acceleration/hesitation problem caused by/causing back pressure problem
    I have been having problems with my buick century not accelrating well and i have tried a few fixes with no good ending. So far i have replaced plugs, wires, air filter, throttle postion sensor, and mass air flow sensor. After that i took it into a shop to look at ...
     
    0 answer
  • HB
    HB - 2002 Buick Century - Engine - 9/10/2014
    Lack of acceleration
    Just purchased 2002 Buick Century, 51k miles. If I try to accelerate from a stopped position, no matter how much I press on the gas, the car goes so slowly (about 20 mph)and takes a while before it picks up any speed. Much worse if I am going up an incline. Doesn't ...
     
    • jdl
      9/10/2014 jdl
      How long since a tune-up? Check fuel pressure, use a gage. Also, check to see if pressure holds for bit, with everything off. I always check for codes, even if the lite isn't on. I've had inactive codes point me in the right direction. Some of the national brand autostores will check codes for free.

      You don't think it is a tranny issue?
  • Mike
    Mike - 1994 Buick Park Avenue - Engine - 9/8/2014
    Cruise control will not stay at selected speed.
    The cruise control works fine when there is no strain on it. But when going up a hill it will not keep up to speed selected, it doesn't drop completely out just starts going slower. After car starts going slower If you put the accelerator down to help, then let off ...
     
    0 answer
  • knowdealneil
    knowdealneil - 2000 Buick Regal - Engine - 9/4/2014
    What is possible problem
    service engine light soon has been on for a week, add coolant light is flashing. have service radiator; water pump works, thermostat works, engine does not over heat. system has problem from start up, oil change 7/1/14 and is clean. what could problem be?
     
    • lesabre man
      9/4/2014 lesabre man
      Have someone hook a scan tool to your vehicle and see exactly what codes you are getting, but you could also test the coolant temp sensor. Sounds fairly simple, with a little more information.