oxygen dummy senser???
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From: Chrisney Indiana
oxygen dummy senser???
I was told about a small device that you can plug in place of an oxygen senser so that if the cat is removed from a vehicle it will bypass and make the computer think that the senser is still reading right and will keep the check engine light off. I have looked all over the internet and can't find them. Does anybody know if there really is such a thing and where i could find some?
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If your handy with a soldering iron http://www.hackaday.com/2006/11/14/o2-sensor-simulator/ They have a lot of projects on that site and here you can get all the parts http://www.skycraftsurplus.com/index...TS&Category=24
Their website isn't the best just give them a call they have what you need I guarantee it!!
Their website isn't the best just give them a call they have what you need I guarantee it!!
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From: Concord, NC
You probably know this already, but the O2 sensor simulators are only for the downstream (after-cat) O2 sensors on OBD-II systems. The upstream, or primary O2 sensors are not affected by removal of the cats and should not be replaced with simulators.
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From: Chrisney Indiana
yes i knew that the ones before the cat can't be bypassed because the engine changes from a rich mixture to a lean mixture. It uses the oxygen senser to make sure it changes. The one after the cat has a smooth signal to verify that the cat is doing its job. I am not totaly ignurant when it comes to cars.
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From: Chrisney Indiana
yeah i understand what you ment. I was just explaning it in a little more detail. The way engines get better gas mileage these days is by getting the engine to run as close to the perfect fuel ration (stoiciometric fuel mixture) (not sure if that is the right spelling) The ration is 14.7 to 1. The more times the engine goes from rich too lean the more the engine crosses this ratio which means it runs better. I have been taught that it is like waves. up and down and the more waves there are the more times it will cross. but anyway, Most of the kits i have seen just look like a couple resistors in a box or bag you just soldier in. If i knew what resistors to get i can pick them up at radio shack for a couple bucks.
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From: St Louis
Originally Posted by 81fordf-250
now which wires would you splice that resistor and capacitor into?
The capacitor is shunted between the signal and the signal return lines. The resistor is inserted in series in the signal line between the sensor and the capacitor.
You're have to figure out the color codes as they are not always consistent.
Steve
