Hi Everyone,

I have a 94 LT1 that I have been having issues with the oxygen sensor. I have replaced it twice, cleared the codes and have been getting the code (H13) every time the engine warms up, about 10 minutes after driving.

I tried a sensor that I got from Corvette guys and when it didn’t work I decided to try a Bosch as it looked like the original I took out of it. The wiring was all wire tied and looks to be in good, clean condition. and still have the code (H13) show up after the engine warms up, about 10 minutes after driving.

I have replaced the purge valve,& fuel vapor canister as the lines were plugged, and the canister was bad. I blew the line out and the car is running great. My concern is the check engine light. I need to get it off so i can pass emissions and register the car in California.


Has anyone here experienced this and if so can you help me with some directions?

Any ideas are greatly appreciated.

 

you need to check the wiring on the harness side for damage. Also check your fuses.