Question about 2006 Buick Lucerne

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I have a 2006 Buick Lucerne 4.6L V8 with 80.0K I am receiving a fault of P2A00 I have replaced the upstream 02 sensor with a Bosch where else should I look?

2006 Buick Lucerne with the 4.6L V8 I am receiving a code of P2A00 I have replaced the upstream 02 sensor with a Bosch replacement, I am still receiving the code of P2A00 where else should I look? Thanks, Joe McDonald.

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  • Buick Master
  • 3,679 Answers

Check all air intake pipe work espescially rocker cover breather for any splits or cracking.If the air going into cylinder isnt correct then you will get a fault reading with the exhaust sensors as air/fuel mixture wont be correct before ign in cylinder

Posted on Mar 26, 2014

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Posted on Jan 02, 2017

  • 521 Answers

SOURCE: WHERE IS THE BATTERY LOCATED ON A 2006 BUICK

Battery is locate dunder the rear seat bottom cushion.

Posted on Aug 04, 2009

  • 7 Answers

SOURCE: how do you access the windshield washer pump on

The washer pump is located on the bottom of the wash fluid bootle. you can access it by removing the front passanger fender liner..

Posted on Jan 12, 2010

  • 4336 Answers

SOURCE: What is the battery life expectancy for the 2006

Battery life is a very complicated issue, there are TONS of factors. High temperature kills batteries, if the fluid goes low, that kills batteries. If you forget and leave lights on, and the battery goes totally dead, (totally dead, zippo, not anything) that kills batteries.

Alternator diodes that fail kills batteries. So 4 to 8 years is typical life IN ABSENCE of the above types of issues. My favorite battery is Interstate. They just work really well. Costco has great battery prices, bumpy for service... Really Dislike Sears die easy.

Posted on Oct 19, 2010

  • 2187 Answers

SOURCE: Trying to change a thermostat

If you are referring to the thermostat for the radiator fan. You would need the correct socket wrench size or just the correct wrench size to get it out. You will know it is bad when the fan turns on immediately after cold start or even if it the temp gauge is at its lowest when the engine has been switched on. Otherwise it could be a bad fuse or relay for the fan if it does not turn on at any condition.

For AC thermostat. It is a lot more work as you will removed dashboard components and return things. First things out last ones in.

Posted on Sep 05, 2011

SOURCE: how to remove the left front door panel on my 2006 Buick Lucerne

Hi Dear Lov, Remove the plugs from the arm rest and behind them there will be deep seated screws. Push in a long screw driver and remove them. Next lift the window control buttons and when removed from the housings disconnect the electrics. (Keep the switches handy) next take a flat blade tool and starting at the bottom of the door, insert the blade between the panel and the door and gently pull the blade towards you. When the studs pop move to the next until all are released. Lift the panel off and then refit the switch to the cables. Reach inside the door and feel for the operating rods which extend from the handle to the latch mechanism. at each end you will feel plastic clips which will rotate away from the rods when pushed in the same plain. These clips beak easily so be careful. It is worth getting a mirror and flash light and studying them before trying to release them. Check both sides as the mechanism may be different at each end. Once disconnected you will notice two hole opposite the exterior door handle, through which a socket spanner fitted to an extension will fit. Remove the nuts and then remove the handle from the outside. When fitting everything back together make sure the rods are correctly fitted. You may find you need to lift or lower the window, or maybe remove it completely to do the job. Regards John

Posted on Feb 11, 2012

Testimonial: "Thanks johngee"

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1 Answer

Tachometer is not showing RPM in 2006 buick lucerne 4.7L and vehicle is shifting hard. All other gauges are working normally. Knock sensor code and crankshaft position code are showing.


Do the diagnostics for the codes . Fix the wiring , replace the sensor , or PCM , what ever the problem an everything will be good .

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Quite likely the on-board ECM needs telling the transmission has been changed or there is a fault in the new transmission.

It probably needs dedicated diagnostic equipment.

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could be several reasons but i'd start with checking the vacumm and air intake lines , also get the OBD codes read as could be a switch/sensor at fault

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P2a00 code


you have a 02 sensor on the exhaust under the car that usually goes shortly after the other and viseser verser. Go to the auto parts and ask if your vehicle is OBD 2 compliant. if so buy an OBD 2 and plug it into your socket usually under the drivers side between you knees. then press read. it wil tell you what codes and the results and you also have the option to erase the codes and turn out your check engine soon light. Replacing a sensor will turn off the light but it can take weeks for the computer to reset itself that`s why the machanic uses the OBD 2 to check to see what sensors are tripped and reset them. Try the reset before buying another sensor. this should work.

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