Question about 2002 Buick LeSabre
Posted by Anonymous on
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Posted on Jan 02, 2017
The O2 sersor will require a special socket to avoid damaging the wiring on the new unit. (the old one really doesn't matter so any socket that works can be used on it)
The first thing to do is spray a thread release agent like PB Blaster® around the threads. You should do it for several days between driving.
Call the auto parts stores to find one that has loaner tools. They will require a deposit until the socket is returned. It will look something like the picture. Yes you will need a socket wrench too.
WORKING UNDERNEATH THE VEHICLE, MAKE SURE ITS BLOCK UP SO IT CAN NOT FALL.
Some more information to consider from a forum
"You might want to take the O2 sensor you just replaced back and get two new ones. Some times new O2 sensors are defective, also when replaceing them I found it better to replace all of them at the same time for sometimes when replaceing only one the computer sometimes sends back false codes. Another thing is if you buy an after market O2 sensor the wires are just a little bit longer and can cause the computer to send back false codes. The best O2 sensors that I have found are the Boch Platinums designed for your vehicle."
Posted on Mar 09, 2009
hi im wes the o2 sensor is always in the exaust newer buicks have one before the converter (sometimes in the exaust manifold) one after the converter if it has duall exaust it could have four
left bank sensor one is before the converter on drivers side bank two sensor 2 would be passanger side after the converter does this help?
Posted on Mar 12, 2009
SOURCE: Crankshaft Position Sensor
the dual crankshaft position sensor is secured in an aluminum mounting bracket and bolted to the left side of the timing chain cover, partially behind the crankshaft balancer, hope this helps get back to me if you need mre help. please rate my fix as i strive to be the best
Posted on Apr 29, 2009
Your fuse box is located behind the right side of the dash,to the right of the glove box.Here is a diagram to better expalin.If you need anything else,let me know. Thanks,Chuck.
Posted on Mar 10, 2010
Testimonial: "thank you chuck very much worked great now if you can help me with my radio. posted you are great"
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Fig. HO2S1 location "2" on 3.8L
Fig. HO2S2 location "4" on 3.8L
Hope this helps (remember to rate and comment this answer).
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