Buick engine repair questions and answers
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1661 Questions
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I changed the oil on my car and I still have a taping noise when I apply the gas it won't do it when at an idleronald alberti - 2007 Buick Rendezvous - Engine - 3/2/2013This problem started four days ago I thought it was low oil so I added the proper amount and then had the oil changed and still when I apply the excilerator it taps when I let off it goes away-
3/2/2013 HouseCallAutoA really good mechanic has to hear this. There is no way to even speculate about a cause.
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Sometimes my buick cuts out when i am waiting at a stop light and you can also here and feel a humming andsmitty7912 - 2000 Buick LeSabre - Engine - 3/2/2013a vibration, it comes and goes. -
Car runs rough when driving any speedanderson628 - 1990 Buick LeSabre - Engine - 3/1/2013car runs the same cold or hot i put plugs and wires but no change.
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3/1/2013 JimmFirst step - have the check engine light or stored fault codes scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific fault code for more assistance.
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
3/22/2013 zak-pakExcellent and thorough respone Jimm. You sound like you're a mechanic.
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Will the engine out 1999 lumina fit a 1996 buick regalERICKR105 - 1996 Buick Regal - Engine - 2/27/2013
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WHAT CAN I DO TO BRING ENGINE IDLE BACK TO NORMAL?jat - 1994 Buick LeSabre - Engine - 2/25/2013I ADDED 8OZ. OF OIL TO 1/2 HALF TANK OF GAS. THE RECOMMENDED AMOUNT IS 2OZ. PER 20 GALS. MY ENGINE IDLE DOUBLED.
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2/25/2013 HouseCallAutoWhat do you mean by "oil" ? What did you pour into the fuel tank? And why? What was the engine doing that you thought pouring something into the fuel tank would solve?
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Car stalls while driving and at idle. also will not start from time to time.bottle_rocket - 1994 Buick LeSabre - Engine - 2/25/2013The car will not start at all from time to time. I have fuel pressure and spark at the plugs. I actually have to put it into netrual then turn it over for it to start. It also dies at light and while i am driving at a contstant rate of speed. I have changed the ...
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2/25/2013 HouseCallAutoAre you saying that after replacing the cam and crank sensor that you still have a cam sensor code? Please tell me the code # also. The idle air control valve will not cause a "no start", but only a start and stall or an intermittent stall, but will not prevent the engine from starting. the TPS, well yes, I even remember replacing one for stalling, but I also had a TPS code stored for it and I did not have a no start accompanying the bad TPS.
With the engine running, try moving the wiring harness that runs under the alternator and see if moving that can get it stall, and if you can, check for a rub-through of the cam sensor wire insulation touching ground intermittently. Repair the wire as needed.
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Engine will turn over but will not crank. changed spark plugs and wires, checked to make sure it was getting gas andchanga.1968 - 1997 Buick Park Avenue - Engine - 2/25/2013and yes it is. don't know what to do next?-
2/21/2013 HouseCallAutoCheck to see if it is getting spark. If there is no spark, your cause is either a bad ignition control module under the coils or a bad crankshaft position sensor.
2/21/2013 changa.1968I did check to see if it was getting a spark and it is. You are talking about when you take one spark plug out and but it against metal and it sparks when you turn the key. If so, yes it is getting a spark. -
2/21/2013 HouseCallAutoYou did not include that detail in your original details or I would have answered differently. Try unplugging the electrical connector from the Mass Air Flow sensor and see if it starts. if it does, replace the MAF sensor.
2/24/2013 changa.1968Sorry about not including that in my first message. My bad. Unplugged the MAF and still did not start. It was almost like it wanted to start.
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2/25/2013 HouseCallAutoThe upper intake manifold is known to crack and cause raw coolant to be introduced into several cylinders.
1. Remove the throttle body assembly.
2. Inspect for a ruptured intake manifold at the Exhaust Gas Recirculation (EGR) passage. The passage will be located at the 6 o'clock position when looking into the plenum. It will be a hole approximately 5/8" in diameter at the throttle body mounting surface.
The upper intake manifold cracks and it dumps antifreeze into the engine, causing it not to start.
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Why wont me car start?zane.littlefield - 1990 Buick LeSabre - Engine - 2/25/2013All of my inner lights come on, but it sounds like they are pulsing, especially my radio. Its has been below freezing the past few days. I tried jumping it today but it did not do anything.
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My oil light comes on when braking. Oil level is fine.Sudan - 1994 Buick Century - Engine - 2/20/2013-
2/20/2013 HouseCallAutoReplace the oil pressure sending unit. if the light still comes on when braking and there is no engine noises at all and the light goes off when accelerating, you can live with that. of course you could have it fixed but the actual cause, if really caused by low oil pressure will be a big and expensive repair.
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2/18/2013 HouseCallAutoThis is a classic sign of being low on coolant in the radiator. Could have other causes as well but check radiator level first.
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Occasionally the car seems to jump or catch when driving. I have had the fuel lines flushed and the fuel filter Changpaula - 2000 Buick LeSabre - Engine - 2/17/2013Fuel filter changed and poured solution into gas in case water in tank. Car still occasionally jumps or hesitates when driving yesterday car stalled at red light when in traffic.-
2/17/2013 JimmFirst step - have the check engine light or stored fault codes scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific fault code for more assistance.
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
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HAVE SPARK AND FUEL AT FUEL RAIL WHAT DO I CHECK NEXT? AND HOW!!! DO NOT HAVE SCANNING TOOL ONLY MULTI METERRAYHUMAN46 - 1998 Buick Skylark - Engine - 2/15/2013 -
HAVE SPARK AND FUEL AT FUEL RAIL WHAT DO I CHECK NEXT? AND HOW!!! DO NOT HAVE SCANNING TOOL ONLY MULTI METERRAYHUMAN46 - 1998 Buick Skylark - Engine - 2/15/2013
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Win start cut off run about 1 min keep cut off but somtime it will run win turn off drandy4728 - 1995 Buick Riviera - Engine - 2/15/2013
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Where is the Diagnostic Trouble Code clip in this car and what does it look like.frankie_destefano11 - 1981 Buick Regal - Engine - 2/13/2013i found 2 clips on on the steering colum and 1 next to the ashtray.
