rockfangd Posted September 24, 2008 Report Share Posted September 24, 2008 Hi everyone i have to do a oxygen sensor job that i have to do on a 1997 pontiac GP GT 3800v6, What i need to know is what sensor is where (basically ) sensor 1 bank 1 is where sensor 2 bank 1 is where sensor 1 bank 2 is where and sensor 2 bank 2 is where. Thank you very much Quote Link to comment Share on other sites More sharing options...
swift13 Posted September 24, 2008 Report Share Posted September 24, 2008 are you changing all of them or just some?? if your doing all i dont think it matters bank 1 should be the front of the car and bank 2 sould be by the firewall sensors (from what i have seen. not on this car) work from the engine and back so sen.1 bank 1 would be the closest to the manifold in the front sen.2 bank2 should be farther down and that goes same for the back side. ANYBODY IF IM WRONG DONT HESITATE TO CALL ME STUPID Quote Link to comment Share on other sites More sharing options...
kwk39018 Posted September 24, 2008 Report Share Posted September 24, 2008 yep thats it Quote Link to comment Share on other sites More sharing options...
95 vert Posted September 24, 2008 Report Share Posted September 24, 2008 Bank 1 sensor 1-odd bank of cylinders (i.e. 1,3,5) before catalytic convertor. Bank 1 sensor 2 after catalytic convertor. Bank 2 same for even bank of cylinders. So bank 2 sensor 2 would be even side of engine (2,4,6) after the convertor. Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted September 24, 2008 Report Share Posted September 24, 2008 There is 1 upstream sensor on that car. It's on the rear manifold. There is also a downstream one after the cat. If the car doesn't have a ton of miles or isn't throwing a code for it I would just replace the upstream sensor. Quote Link to comment Share on other sites More sharing options...
Andrew Posted September 24, 2008 Report Share Posted September 24, 2008 There is 1 upstream sensor on that car. It's on the rear manifold. There is also a downstream one after the cat. If the car doesn't have a ton of miles or isn't throwing a code for it I would just replace the upstream sensor. exactly. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted September 26, 2008 Author Report Share Posted September 26, 2008 wait so how many does it actually have. And yes it does have the check engine light on. Is it easy to get to with the 3800? Quote Link to comment Share on other sites More sharing options...
88red4cyl Posted September 26, 2008 Report Share Posted September 26, 2008 wait so how many does it actually have. There is 1 upstream sensor on that car. It's on the rear manifold. There is also a downstream one after the cat. If the car doesn't have a ton of miles or isn't throwing a code for it I would just replace the upstream sensor. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted September 26, 2008 Author Report Share Posted September 26, 2008 cool. I hope it isnt as hard as my cutlass. I think i saw it actually last week when i was changing the spark plugs, Is it located near the brake booster?> It doesnt look hard at all lol Quote Link to comment Share on other sites More sharing options...
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