Question about Buick Regal
Posted by Anonymous on
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Posted on Jan 02, 2017
Im assuming this is the Series I 3800? If so, if you can email me I can send you some directions on the process. Its for a Series II 3800 but it should be similar. If you cant email me, post up and I'll see what I can do.
Posted on Dec 30, 2008
Hello oldiro: My name is Roger and I can help. From under the vehicle look up between the transmission and the side of the block. Mid motor above the pan rail there is a bolted in sensor. This should be the crank sensor.It will have two wires plugged in to it. Please rate this answer as this lets us know you received the information you asked for. Should you need further help please just ask. Thank You for using FixYa. Roger
Posted on May 06, 2009
SOURCE: location of oxygen sensor
I believe you may have three (3) O2 sensor, (2) of the sensor is on ether side of the exhaust down pipe and some times called up stream O2 sensor, the third O2 sensor know to some as the down stream O2 and is after the Catalytic converter.
The up stream O2 monitors the left and right side banks and sends signals to the ECM to make the adjustments to the injectors to keep the proper air/fuel ratio.
The down stream O2 monitors the catalytic converter and sends signal to the ECM if the catalytic converter has gone bad.
Good luck and hope this helps. If you get it scanned at Auto Zone, they should be able to let you know which O2 has gone bad so as to not change all three. You could always check the wire harness to the down stream O2 for corrosion. Keep me posted
Posted on May 29, 2009
The o2 sensors are located on the exhaust system.The upstream in on the rear exhaust manifold and the down stream is in front of the catalytic converter.Usually when they are bad they will make the check engine like go on.Make sure the air filter is clean,tires at correct inflation,alignment is to specs.If the vehicles pulls to one side or the other or steering wheel is not straight when driving down a straight stretch of road.Also tires are wearing normal.Use cruise control where ever on highway.If you let your vehicle warm up in winter.This also uses gas.Hope this helps.Good luck.
Posted on Dec 23, 2009
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