what is a 02 sensor and how to replace in a 1997 chevy 1500 Z 71 4/4

degottcha
5

Asked by Oct 22, 2013 at 03:33 AM about the 1997 Chevrolet C/K 1500 WT Standard Cab SB

Question type: Maintenance & Repair

had read out with a cent -tech and says i 've 2 bad  02 sensors and misfiring from mulit. cyl

1 Answer

Cucumber12
80

Misfires may cause o2 sensors to read incorrectly, so investigate the misfires first. You may have a couple of bad spark plugs, unplugged spark plug wires, or distributor problems. Check your wires first, make sure they're not torn, frayed, or touching your exhaust. If the wires are pretty old, it may be time to replace them anyway, do a good tune up; wires, spark plugs, distributor cap, fuel filter, etc. After messing with the distributor, always take it back to a mechanic with a good scanner to set your cam timing back to normal (0-2 degrees). You must do this, you can't set ignition timing!!!! Using a timing light is a waste of time and will get you nowhere!!! Now, if it really is your O2 sensors having problems; that's easy. You have 4 on your truck; 2 before the catalytic converters, and 2 after. They simply screw in to your exhaust. Do this when your truck has been sitting for a while because the cats and sensors get flippin hot, really quick. To identify them, the scanner should say something like "Bank 1, sensor 2". The bank refers to the side of the engine. Bank 1 are the sensors on the pipe coming from the drivers side of the engine, bank 2 for the passenger side. And sensor number 1 is between the catalytic converter and engine, sensor number 2 is the sensor after the catalytic converter. Hope this helps!

8 out of 8 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,450
#2 John Saffrahn
John Saffrahn
Reputation 2,220
#3 Rowefast
Rowefast
Reputation 1,160
View All

Related Models For Sale

Used GMC Sierra 1500"
882 Great Deals out of 52,880 listings starting at $2,400
Used Ford F-150"
2,850 Great Deals out of 202,668 listings starting at $1,500
Used Chevrolet C/K 2500"
296 listings starting at $1,995
Used Dodge Ram 1500"
524 Great Deals out of 13,647 listings starting at $1,195
Used Chevrolet Tahoe"
983 Great Deals out of 36,307 listings starting at $2,095
Used Toyota Tacoma"
581 Great Deals out of 27,167 listings starting at $2,199
Used Chevrolet C/K 3500"
312 listings starting at $5,595
Used Chevrolet S-10"
17 Great Deals out of 1,829 listings starting at $1,749
Used Chevrolet Camaro"
711 Great Deals out of 37,398 listings starting at $2,650