Originally Posted by
Dustin
Man, you guys are awsome. The more I've read, I do believe I will concentrate on the O2 sensors. Seems like it may be slower but yield more solid returns on fuel economy.
I'm really into building my own stuff. I get frustrated buying things like O2 enhancers, taking them apart, and seeing I could have bought the stuff at Radio Shack for a few dollars and put out a little effort to build it myself. I went to Radio Shack today with an idea of how to introduce a few millivolts to the O2 signal to the ECM. After talking with the owner he determined that I needed a certain trim pot I think it was. I came back to the garage and wired it as the schematic described on the back of the package. I applied 12 volts to it and adjusted it down to .200 volts output. Now, can I introduce that .200 volts which is what I'm just guessing as a starting point, I can adjust it with very high accuracy anywhere from 0 volts to battery voltage to the signal wire from the O2 sensor to the ECM. I'm thinking (hoping!) I can simply build a box that has 12 volts to it running through the pot adjuster and send the adjusted .200 volts to the 3 pre-cat O2 sensors......1 from the left bank, 1 from the right bank, and 1 just before the catalitic converter. There is one after the converter but I've read that just checks its work. Since I will be running one adjuster, all the sensors will be receiving the same skewed signal hopefully convincing the ECM that things are "normal" and to look elsewhere for something to do.
I'm kinda concerned that the voltage I'm sending might backfeed into the O2 sensor but I don't think it will do anything but stop right there.
Am I on the right track or on the verge of costing myself alot of cussing and money?!