It isn't unusual to have an A/F sensor go bad at 80k. Sometimes it is the heater circuit which is unrepairable. Cleaning the sensor will do no good. I suggest you chuck the old ones. Your new sensors will likely outlast your car. Even if they don't, do you really want to go to the trouble of replacing a sensor with a used one which may or may not work OR may or may not last more than a few thousand miles?Hi again
I needed to ask what you mechanics think about
me cleaning the old sensors I took out of my Avay today.
I installed new Denso type and they are a bit different in the holes that are in them. they are the right part number tho 4622's
These are Toyota brand and they sell for $185 a piece here at our dealer.
I dont think they are all that bad they have a bit of a whiteness to them.
I think they are not that old. I have 195,570 miles so by the way they look they might have been replaced at the 100,00 by the 2nd owner.
Does anyone have pics of what real bad ones look like?
I have the feeling I should soak them and thenwire brush them and put them away for a just in case day.
any advice will be appreciated.
Thanks have a great weekend everyone
You can do a continuity check on your old sensors to determine if the heater circuits are fried.
PS I hope you didn't pay $185 for your denso sensors. You can get them at Amazon for $125.