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Buick engine repair questions and answers

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  • Denys Templeton
    Denys Templeton - 1999 Buick Park Avenue - Engine - 12/29/2013
    Engine idle not working properly
    When engine is cold or cool starts O.K. When it is hot it will start O.K. but will stop. Have had 4 different Techs look at this and they have not been able diagnose prob.
     
    • HouseCallAuto
      12/29/2013 HouseCallAuto
      So if I understand this correct - you are saying that the engine has a stalling problem, it shuts off without warning? The two most common causes of stalling on your vehicle are the mass air flow sensor and / or the crankshaft position sensor. That being said stop paying diagnostic labor and just have both of these parts replaced either together or one at a time. Odds of solving this are greater than 99% if replacing both parts.
  • Al snyder
     
    • HouseCallAuto
      12/29/2013 HouseCallAuto
      What were the symptoms with the old cluster that you removed?
  • guy
    guy - 1994 Buick LeSabre - Engine - 12/29/2013
    My 1994 buick lesabre has had off and on starting problem, have replaced fuel pump map sensor,fuel pressure regulator,
    iac,sometimes when you start her she pulsates,service engine light flashes off and on and interior lights pulsate and when you turn headlights on pulsating stops, can also hear clicking under hood during pulsating, had alternator checked they said it was ok, had car ...
     
    • HouseCallAuto
      12/29/2013 HouseCallAuto
      Check the voltage at the battery DURING the pulsating and if it is not about 14 or more volts the alternator is junk.
  • AutoMD Member
    AutoMD Member - 1993 Buick Park Avenue - Engine - 12/24/2013
    What causes oil pressure to go down.
    I replaced the oil pump kit and oil assembly unit
     
    • CVO
      12/24/2013 CVO
      Oil galleries could have been partially plugged up with oil residues and they restricted the oil flow.
      Check the oil pressure switch for their reading accuracy.
  • AutoMD Member
    AutoMD Member - 1999 Buick Regal - Engine - 12/23/2013
    Intermittenly wont come out of park
    some times car wont come out of park clicking w/ foot on brake and same w/ thumb on button on shifter in console. shut off ing. sw. take key out and in several times car starts and drives fine.I have 2 keys both test same w/ ohm meter. also w/ driving engine will ...
     
    • HouseCallAuto
      12/23/2013 HouseCallAuto
      Same cause as my answer in your other post.
      HouseCallAuto
      1/2/2014 AutoMD Member
      you were right the ing. sw. was the fix. thanx for the help.
  • AutoMD Member
    AutoMD Member - 1999 Buick Regal - Engine - 12/23/2013
    Engine stalls when turn signal is used. when i try to restart the car acts as if i have wrong chip in key
    car has 145k miles just put ing. mod. 2 months ago. sometimes the car will start fine but wont come out of park, if i shut off engine take key in and out a couple times car will start and drive fine, until i put turnsignal on then engine dies and wont restart, acts ...
     
    • HouseCallAuto
      12/23/2013 HouseCallAuto
      You have a faulty ignition switch. probability here is nearly 100%.
  • AutoMD Member
    AutoMD Member - 2002 Buick Century - Engine - 12/18/2013
    Car runs rough, has a p0300 engine code. Can someone advise me as to how to proceed testing?
    The car seems to run very well when cold, but smells a little like gas. Once it warms up it has a random misfire, and runs really rough at idle. It performs very well at freeway speeds. the first thing I did was changed the plugs and wires, I also tested the ...
     
    • HouseCallAuto
      12/17/2013 HouseCallAuto
      Is it always #5 cylinder that you can view misfiring when cold or does it change cylinders sometimes?
    • AutoMD Member
      12/17/2013 AutoMD Member
      From morning to morning it has varied. The first cold test was #5 all the time. Then after it warmed up the misfire moved around between the cylinders. this morning it was number one on the cold start that was missing.
    • HouseCallAuto
      12/17/2013 HouseCallAuto
      sometimes the egr valve builds up deposits inside it that do not let the valve close completely and that would give you both a rough idle and P0300 so remove the egr valve and use any piece of thin metal (once I used a piece of a metal can) and temporarily block off the ports by placing the flat metal under the egr and see if the idle smooths out or not after starting it. If it still idles rough after running it and appears unchanged, remove the metal block off plate and re-install the egr.
    • AutoMD Member
      12/18/2013 AutoMD Member
      There may be some problem with your engine. So you can have a look at this ecu tuning site http://www.obd2life.com/ecu-tuning-tool-c-88.html , hope can help.
  • Cybage QA
    Cybage QA - 2010 Buick Enclave - Engine - 12/16/2013
    Engine making noise
    Engine making noise
     
    0 answer
  • Kennajp
    Kennajp - 1996 Buick Park Avenue - Engine - 12/14/2013
    What is the cause and cost to repair a Radiator leak looks like chocolate milk & strong fuel smell
    175k, radiator leak on the driver side of the radiator looks like chocolate milk. Has been present for about 3 weeks. It just dumps out whenever I stop the car. Also have a VERY STRONG gasoline odor that is present when both driving and not driving the car. Has been ...
     
    • Jimm
      12/14/2013 Jimm
      The issue is maybe not with the radiator, but the 'milk' appearance indicates that engine oil is mixing with coolant inside the engine. This often describes a cylinder head gasket leak - more serious than simply replacing the radiator. Have an inexpensive compression test performed to check for the engine sealing integrity.

      The fuel smell and leak is resolved by replacing the leaking fuel line - fuel flexible hose. The parts are readily available; try these on-line sources; www.partsgeek.com, www.rockauto.com, www.discountautoparts.com, www.autopartswarehouse.com, www.jcwhitney.com - to list only a few possibilities.


  • Kennajp
    Kennajp - 1996 Buick Park Avenue - Engine - 12/14/2013
    What is the cost to repair a leaking radiator and a bad fuel leak?
    175k, radiator leak on the driver side of the radiator looks like chocolate milk. Has been present for about 3 weeks. It just dumps out whenever I stop the car. Also have a VERY STRONG gasoline odor that is present when both driving and not driving the car. Has been ...
     
    • Jimm
      12/14/2013 Jimm
      The issue is not with the radiator, but the 'milk' appearance indicates that engine oil is mixing with coolant inside the engine. This describes a cylinder head gasket leak - more serious than simply replacing the radiator.
      The fuel smell and leak is resolved by replacing the leaking fuel line - fuel flexible hose. The parts are readily available; try these on-line sources; www.partsgeek.com, www.rockauto.com, www.discountautoparts.com, www.autopartswarehouse.com, www.jcwhitney.com - to list only a few possibilities.
  • AutoMD Member
    AutoMD Member - 1997 Buick LeSabre - Engine - 12/12/2013
    Why wont car crank but not start
    car used to die going down road, but would usually start right back up if put in neutral, but now car will crank but not start, sometimes it will start by using starting fluid while cranking. sometimes wont start at all.
     
    • HouseCallAuto
      12/12/2013 HouseCallAuto
      The first thing to do is plug in a code reader and see what fault codes have been stored. You can obtain a code reader from amazon.com for $17 with free shipping. Reading codes takes two minutes and then you can post the code number or numbers here on the post update. Checking codes cannot be skipped. if you have the car towed to a repair facility that is the first thing they will do is check for codes before anything else.
  • JTRollin
    JTRollin - 2002 Buick Regal - Engine - 12/11/2013
    My car is leaking antifreeze from the top of the engine
    It is a cold day
     
    • HouseCallAuto
      12/11/2013 HouseCallAuto
      The most common spot to leak is the 90 degree plastic elbow that connects the base of the intake manifold with the belt tensioner housing. Here is a picture >> https://www.google.com/search

      Also, if you do this yourself, make sure that you get the broken piece out of the housing and / or manifold or the new one will leak
  • AutoMD Member
    AutoMD Member - 2003 Buick LeSabre - Engine - 12/11/2013
    Why does diagnostic say Cylinder 1 is running lean
    Check engine light is on
     
    • HouseCallAuto
      12/11/2013 HouseCallAuto
      It does not say cyl 1 is lean. It says Bank one is lean, or code P0171 which can have multiple causes. Not a sure thing but I'd say replace the mass air flow sensor. Probability here is greater than 75%.
  • AutoMD Member
    AutoMD Member - 2003 Buick LeSabre - Engine - 12/11/2013
    Check Engine Light On - Code says Cylinder 1 is running lean
    Using more fuel than normal, but runs ok
     
    • Jimm
      12/11/2013 Jimm
      Are you certain the code pertains to a single cylinder - rather than bank #1 - running too lean? The lean condition may be caused by any of the following conditions; faulty fuel injector, low fuel pressure, faulty fuel pump, cloged fuel supply or rail.

      What is the specific fault code? Please post a reply with the fault code for further assistance.
      Jimm
      12/11/2013 AutoMD Member
      I believe it was P0601 and the read out said bank 1 running lean
  • keith
    keith - 1995 Buick LeSabre - Engine - 12/9/2013
    Car stops running after about 10 miles-less if it's hot out.the harmonic Balancer is bad can this cause the cps to stop
    working and kill the engine or does it need changing too.1995 Buick Le Sabre custom.after about 3 min. the car will start and drive about 100 yards to 1 mile and then die again,then wait and drive ,ect.ect,ect..When it dies it like it running out of fuel.fuel system ...
     
    • Sammy
      12/9/2013 Sammy
      ignition modules tend to get hot and fail to give coil signal to send spark dielectric grease needs to be applied to keep heat temp down some times ground wire under module goes bad sounds electrical plugged fuel filter week fuel pump