[Kenneth Krieger]

I have had Belangers on both of my Vipers.....Gen 1 and Gen 3. No problems with the Gen 1, but did have an issue with the downstream O2 sensor on the passenger side throwing a CEL. Finally....... discovered that the O2 sensor wiring harness on that side was just touching the back header tube. Thought it might have burned through the wiring on the harness. Unplugged the harness, and took off all the insualtion only to find NO burned, cracked, or broken wires. Now what? Well, repalced the heat shield insulation on the O2 sensor harness, and then made a "bracket" and attached the bracket to the firewall, and then pulled the harness away from the header tube and attached to the "bracket". Voila, the CEL went out after about 3 miles of driving and hasn't come on since. I saw Lou Belanger the next week and he reminded me that the electronic signal from the O2 sensor was "interupted" by the heat from the header tube, and that's what threw the CEL. Heat was the problem......check out your wiring harness and wiring geography and make sure that you don't have the same thing happening. Don't hesitate to call Lou.......he is a great guy and will help you out ay way he can.