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Buick engine repair questions and answers

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  • AutoMD Member
    AutoMD Member - 1999 Buick Park Avenue - Engine - 11/9/2013
    What is wrong when your car will start up and cutoff and then wont turn over or make a sound
    200550
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1999 Buick Century - Engine - 11/8/2013
    The car is overheated
    it seems that the cooling fans on the radiator are not working
     
    • CVO
      11/8/2013 CVO
      The check engine doesn't have to be on to store a fault code..
      Using an obd2 code reader Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles to read the fault codes.The price is $ 15.69 dollars + shipping @ amazon.com.

      1. Using a 12 volts direct to test the radiator fan.If the fan is Ok, next.

      2. Test the engine coolant temperature ( ect ) sensor.
      Sensor Installed in Vehicle
      Disconnect the engine wiring harness from the ECT sensor.
      Connect an ohmmeter between the ECT sensor terminals.
      With the engine cold and the ignition switch in the OFF position, measure and note the ECT sensor resistance.
      Connect the engine wiring harness to the sensor.
      Start the engine and allow the engine to reach normal operating temperature.
      Once the engine has reached normal operating temperature, turn the engine OFF .
      Once again, disconnect the engine wiring harness from the ECT sensor.
      Measure and note the ECT sensor resistance with the engine hot.
      Compare the cold and hot ECT sensor resistance measurements with the accompanying chart.
      If readings do not approximate those in the chart, the sensor may be faulty.
      See the chart @ www.autozone.com

      Note: Temperature sending unit sends a signal to the temperature gauge on the instrument panel
      When not replaced, vehicle may experience inaccurate temperature gauge function, overheating engine, internal engine damage and/or excessive fuel consumption.
  • AutoMD Member
    AutoMD Member - 1999 Buick Century - Engine - 11/8/2013
    Oil look like slush I think the oil is mixing with the water
    The car is running hot and when I check the oil it looks like its is mixed with water
     
    • HouseCallAuto
      11/8/2013 HouseCallAuto
      Probably a bad head gasket. Does the coolant look clean or does it look like there is oil in it as well?
  • AutoMD Member
    AutoMD Member - 2002 Buick Rendezvous - Engine - 11/6/2013
    Why is my panel lights dimming
    is the mileage ,my inside panel light were dim and my battery light came on then my car stalled while I was driving, so I took I to the shop and they said it was the oxygen sensor, so they replaced it and it still had dim panel light but it drive fine for a week ...
     
    • John's Auto Repair
      11/6/2013 John's Auto Repair
      I would have the charging system checked. Most part stores like AutoZone will check it for free.
    • HouseCallAuto
      11/6/2013 HouseCallAuto
      This does sound like a charging system issue. Have to check the system while the dimming is going on.
  • Rayjezzy2803
    Rayjezzy2803 - 2002 Buick Park Avenue - Engine - 10/30/2013
    How do u change a rear 02 sensor
    check engine light is coming on
     
    • CVO
      10/30/2013 CVO
      Please, let us know what's the fault codes ?
  • AutoMD Member
    AutoMD Member - 1999 Buick LeSabre - Engine - 10/30/2013
    Why wont my car hold any gas, ill try to put some in and it will only take a little bit then spit the rest out.
    it has alittle over 200,000 miles but it was alright till my friend put a new fuel pump in for me because i needed one and he put it on and a couple days later it started acting up like i was about to run out of gas, and dying out. when i start it now it wont run, ...
     
    • bear.1216
      10/30/2013 bear.1216
      Try running the car with the gas cap removed. Are you saying that when you try to fill your gas tank it will not take fuel. This sounds like the fuel tank vent valve is stuck or the evap vapor line is plugged or pinched. This will cause fuel tank filling issues and will make your engine starve for fuel. You will most likely have to drop the fuel tank again to check the vapor line. If you have a vacuum pump you could apply vacuum to the tank vapor line at the EVAP canister. If it holds vac. pressure then you know that the line is plugged or pinched or the valve is stuck. The vent valve is often damaged when removing or replacing the fuel tank.
  • AutoMD Member
    AutoMD Member - 1999 Buick LeSabre - Engine - 10/29/2013
    Why wont my car hold any gas, ill try to put some in and it will only take a little bit then spit the rest out.
    it has alittle over 200,000 miles but it was alright till my friend put a new fuel pump in for me because i needed one and he put it on and a couple days later it started acting up like i was about to run out of gas, and dying out. when i start it now it wont run, ...
     
    • CVO
      10/29/2013 CVO
      1.Did the fuel filter was changed ? The filter might clog up .

      2.Check the FUEL SYSTEM PRESSURE
      1999 Buick Lesabre 3.8L SFI OHV 6cyl
      The Fuel System Pressure

      48-55 PSI (Pounds per Square Inch)Position the ignition switch and the A/C system in the off position. Install a fuel pressure gauge to the vehicles fuel rail or fuel pressure test port.Confirm that no leaks are present, and visually verify the PSI reading on the gauge with the ignition in the on position.
    • HouseCallAuto
      10/29/2013 HouseCallAuto
      Replace the Canister Vent Solenoid/Valve
  • AutoMD Member
    AutoMD Member - 1999 Buick LeSabre - Engine - 10/29/2013
    Why wont my car hold any gas, ill try to put some in and it will only take a little bit then spit the rest out.
    it has alittle over 200,000 miles but it was alright till my friend put a new fuel pump in for me because i needed one and he put it on and a couple days later it started acting up like i was about to run out of gas, and dying out. when i start it now it wont run, ...
     
    • Jimm
      10/28/2013 Jimm
      Usually, this issue is related to plugged evaporative fuel tank vent hoses - these run from the top of the fuel tank to just next to the fuel filler neck by the gas cap.

      As a firststep - simply try to unplug the hoses using a length of hanger wire. If this does not clear up the issue, you will have to replace the vent hoses.
    • Jimm
      10/29/2013 Jimm
      The problem may not be related to either inexpensive, poor quality fuel, or the fuel pump installation. The issue - as you have described - is more than likely related to plugged vent / evaporative hose - along the length of tube from the fuel fill tube down to the fuel tank.

      Try the suggested repair using a length of wire to unplug the vent hose / tube as first step. Check the 'How-To-Guides' feature on the AutoMD website for more specific steps and instruction, even videos - as needed.
  • AutoMD Member
    AutoMD Member - 1991 Buick Skylark - Engine - 10/27/2013
    Installing oil pump, need specific information,or a diagram ? tool? look for notches?
    engine over heated,heads were redone,found shavings in the oil pan,pump had a broken gear. are there notches or adjustments tools to install new oil pump ???
     
    • CVO
      10/27/2013 CVO
      2.5L Engine
      Disconnect the negative battery cable.
      Drain the engine oil and remove the oil pan.
      Remove the oil filter.
      Remove the oil pump cover assembly.
      Remove the gyrator pump gears.


      CAUTION
      The pressure regulator valve spring is under pressure. Exercise caution when removing the pin or personal injury may result!

      Remove the pressure regulator pin, spring and valve.

      To install:
      Lubricate all internal parts with clean engine oil and fill all pump cavities with petroleum jelly.
      Install the pressure regulator valve, spring and secure the pin.
      Install the gyrator gears.
      Install the pump cover and tighten the screws to 10 ft. lbs. (14 Nm).
      Install the oil filter.
      Install the oil pan.
      Fill the crankcase with oil to specification.
      Connect the negative battery cable, check the oil pressure and check for leaks.
      FYI. This site didn't provide any diagrams for your specific car .
      http://www.autozone.com/.../...rGuideContent.jsp
  • tcee13
    tcee13 - 1995 Buick Park Avenue - Engine - 10/26/2013
    Do i need a new motor?
    car would not start. mechanic said new plugs went in and car started right up. turned off car and would not start again. took out plugs and they were wet. also said something about being able to hear a leak. research showed lots of problems with head gaskets ...
     
    • CVO
      10/26/2013 CVO
      Obtain a compression tester from a loan free program at the local auto parts stores such as O'Reilly or Autozone. Do a compression check on the cylinders. They should all be within a couple of psi of each other. If one or more are reading 10 or more psi higher than the rest, the head gasket is blown or you have a cracked block or head.
      Note: for a new motor, see this site http://www.jasperengines.com/index.php
      CVO
      11/5/2013 tcee13
      thanks for the suggestion. replaced the plastic intake mannifold, oil, and coolant. car runs like a top.
  • AutoMD Member
    AutoMD Member - 2002 Buick Rendezvous - Engine - 10/25/2013
    Why does my car have issues staying running?
    My Buick Rendezvous was used to help jump a Lincoln MKX the other day. Immediately after, my battery light on the dash started coming on. This continued for a few days (coming on and going off) then this past Wednesday the battery light came on again, followed by ...
     
  • AutoMD Member
    AutoMD Member - 2000 Buick Century - Engine - 10/24/2013
    Why does my car periodically have no fan running no ac and no cruise control...at times all is fine on start up
    milage is 110,000...it happens on start up at times and at other times all is running on start up....or everthin comes on after driving for awhile
     
    • HouseCallAuto
      10/24/2013 HouseCallAuto
      Most likely cause is a bad ignition switch. probability here is greater than 75%. This is exactly the symptom in certain GM cars with a bad ignition switch. Switch heats up and contacts expand and complete the battery feed circuit inside the switch and you get back the blower. I changed my mind. The probability here is 100%. This symptom has no other cause except ignition switch because I just looked at a wiring schematic for 2000 Century. The battery feed circuit directly from the ignition switch powers 3 fuses. The blower fuse, the AC, and the Cruise Control and nothing else. That's a wrap.
  • AutoMD Member
    AutoMD Member - 1990 Buick Electra - Engine - 10/23/2013
    1990 buick electra - won't start, not getting any fire to the sparkplugs
    90 Buick Electra - 128000 miles - it turns over good but won't start. I'm not getting any fire to the sparkplugs. I've checked the wires and fuses and put on a new crank sensor. it has good fuel pressure and the only code that comes up ts 12, so there's no help ...
     
    • CVO
      10/23/2013 CVO
      If the engine has no spark, check for voltage at the coil positive terminal when the ignition key is on.

      If there is voltage, the problem is on the trigger side of the coil (pickup, crank sensor, ignition module or primary wiring circuit).

      If there is NO voltage at the coil, the problem is on the supply side (the ignition switch or ignition wiring circuit).

      If the coil has voltage, the problem may be a bad high voltage output wire from the coil to the distributor, hairline cracks in the coil output tower, or cracks or carbon tracks inside the distributor cap or on the rotor.
      For more information, see this site http://www.aa1car.com/library/no_spark.htm
    • HouseCallAuto
      10/23/2013 HouseCallAuto
      If you have not done so already, replace the ignition control module.
  • AutoMD Member
    AutoMD Member - 1995 Buick Regal - Engine - 10/19/2013
    While in park or at a stop light the idle is rough almost wants to die but doesn't. no codes, check engine light is on.
    just replaced the fuel pressure regulator and no change
     
    • HouseCallAuto
      10/19/2013 HouseCallAuto
      Remove the EGR valve and make a simple block off plate from thin metal. Once a tore apart a soda can and used that. Install in between the EGR valve and engine to determine if the EGR valve itself is remaining stuck open and causing your rough idle. If the EGR valve is your cause you will notice an immediate drastic improvement in the idle quality. You will know. Don't talk yourself into thinking it's better if it isn't because this valve is not dirt cheap.
  • AutoMD Member
    AutoMD Member - 1981 Buick Regal - Engine - 10/16/2013
    TUNEDUP CAR WITH NEW PARTS WONT START. RAN ROUGH PRIOR TO NEW PARTS.
    HAS FUEL TO CARB. NEW FILTERS, FIRING ORDER CONFIRMED.
     
    • HouseCallAuto
      10/16/2013 HouseCallAuto
      Is there ignition spark? Yes / no? If no spark then you messed up something at the distributor while putting all that back together. This is the obvious answer here.
    • RGPCJP
      10/16/2013 RGPCJP
      LOCATE THE NUMBER ONE PLUG WIRE, REMOVE IT FROM THE SPARKPLUG. INSERT AN OLDER PLUG INTO THE WIRE. USING A GLOVE ETC TO HOLD THE PLUG/WIRE, PLACE THE PLUG AGAINST THE METAL FRAME ON IT'S SIDE (GROUND THE PLUG TO FRAME) HAVE SOMEONE CRANK THE ENGINE AND WATCH THE TIP OF THE PLUG. YOU SHOULD SEE THE SPARK (BLUEISH IN COLOR) IF YOU ARE GETTING FIRE TO THE PLUGS. IF NOT THEN LOCATE YOUR DISTRIBUTOR AND CHECK FOR A COIL WIRE (THE CENTER OF THE CAP) IS IT PLUGGED IN TIGHT? IF SO REMOVE THE CAP AND CHECK ALL CONNECTIONS TO THE CAP AND INSIDE AS WELL. IF I AM CORRECT IN MY THINKING, THERE WILL BE A MODULE INSIDE THAT REPLACES THE OLD POINT SETS. COULD BE THIS PART IS BAD. BE SURE THE INSIDE OF THE CAP IS DRY, YOU ALSO MAY WANT TO REPLACE IT SINCE IT COULD HAVE GOTTEN CRACKED WHILE YOU WERE TUNING UP THE CAR. HOPE THIS HELPS.