[me_tu05]

I recently had installed a 2.5 inch exhaust on my cruiser, getting rid of the 2 cats and making it one pipe all the way. I also couldn't remove one of the old O2 sensors and so I tried to wire both O2 connectors to the same O2 sensor. I was thinking that this should work because they are both in front of the cats. I also broke the one working O2 sensor. I replaced the sensor today and wired another connector to it, went for a short drive down the street and when I got back the ecu caught on fire. Do you think the sensors did this, if so, is it a bad idea to run both connectors off of one sensor? And, does anyone have a spare ecu sitting around that I could buy from them?

[Mark W]

Your efi system treats your six cylinder engine like a pair of 3 cylinders. the two sensors read different gases and the input is used for different injectors.

They need to stay separate. They are separate circuits in the ECU.




Mark...

[slcfj62]

Based on your experience, it IS a bad idea to run both O2 sensors to one ECU connector. You most likely connected the O2 sensors in parallel, which would draw double the amps from the ECU, and that is probably why it fried.

[Michael Hanson]

Have to say I agree and will now never do it. Mike