I bought some long 02 sensors from someone off of here. He said that I needed them bc I had longtubes. Needless to say, a few days ago I swapped them out and the 02 sensors that I took off were less then a foot long, the ones I replaced them with were 2+ft long . I tried to zip tie them up, away from the headers, but I didnt jack my car up enough to see it very well. Needless to say Im still having acceleration issues, not only at WOT. My car constantly bogs down. Any ideas?

 

Something like O2 sensors I would only get new. Weird that its 2ft long. Also, doesn't spraying kill O2 sensors? Not that Im saying you did that with these.

 

u sure thats the problem?

 

look for vacuum leaks in your PCV system.

 

You bought used sensors and wonder why you didnt see a change?

Go to Orileys and get 2 Bosch P/N 13111's. Those are C5 Corvette rear 02 sensors which are the proper length for long tube headers. If that doesnt fix it get to a shop of your choice and have them use a tech 2 or whatever scanner they have to see what the fuel trims are doing.


Or you can bring it to us and get it fixed correctly the first time!

 

Bosch 13111

try az and get it scanned.. if it is the o2's then get the part mike recommended above. u will need to tie wrap them also

 

I bought 02 sensors that were from a c5 vette, they are waaay too long.

 

Don't bother with getting a code pulled at Autozone. They can't get any real time data, only codes. That will not help you diagnose a problem. What they will do is tell you to throw their parts at it until you get it right. If it's a harness, they don't carry those, but maybe you'll get lucky. Mike is right, you need to see what the fuel trims are doing to get a better idea. You also need known good O2s. I strongly prefer GM/Delco sensors, but Bosch is my second choice. Regardless, you need new to rule that (mostly) out. Do you still have cats, by chance?
I'm with Mike on this one, go to him or a shop you trust that can actually diagnose a problem not just sling parts. I also know firsthand that Mike developed this wise methodology with some years in the school of hard knocks.

 

Those corvette sensors work fine, the other option is to extend the wires on the stockers or buy extensions. I run the Bosch 13111's on my car with no issues, but I bought them new.

The O2 sensors have no say so in how the car runs at WOT, the car goes into open loop. So, if the car is doing it at part throttle and WOT, I would look elsewhere. The plugs may have been fouled driving part throttle by excessive fuel trims (bad O2) on one side though, but you already checked those right? I would look into the MAF, vacuum leak, or plug wire.

 

use bosch 13111 with no o2 ext

 

As stated before use the bosch 13111, they are long but that is what you want. Just zip tie them up next to the tranny, it's really no big deal.

 

i have the same problem and ive checked my plugs 4 times so im just taking it to pavlock soon i think its a vacuum leak

 

I have actually had problems with people bringing me brand new delco sensors and splice in extenders and ran into lazy switching problems. Never had problems with the 13111's though.

 

got my car back and turned out to be the 02's i will be buying the 13111's