This week with some help I had to replace the thermostat on the 07 Subura Impresa wagon with a 2.5 and stick. Pulled the radiator out of the car and replaced it with no issuers. I noticed that the front O2 sensor on the front of the motor had been chewed on by mice or something. I was not sure how into the wires they had gotten cause a couple of weeks ago the check engine light come on and one of the things might be an O2 sensor. It looked easy to pull and replace.....Famous last words.
Was told to clean out the treads to put the new one cause it would not screw in. Tried a couple of sensors and the next one would not fit the top side for the plug yesterday. It was bad when you get a guy at the parts store wondering just the part you are looking for with the end of the sensor and swears that it is the right now. He comes out to my house yesterday to see what I was talking about and is very confused why the plug will not work. On the cat side I know we screwed up the treads and had to walk away for a couple of days of dealing with this. I will put the radiator back in and taking it to someone to fix it since the person helping me and myself having gotten to the point of walked away before things get thrown trying to figure out what is wrong....sigh.
The guy at the autoparts store came to your house to look at your car???
Yes, It was a manager that did it after going back a couple of times and he was annoyed and it turned out the new sensor was still the wrong one. I took the car to a shop to deal with the mess after we screwed up the treads and they got the right sensor and put it in. The advanced still says it was the right one though. The car runs and drives good though.
I wasn't aware of an O2 sensor with anything other than an M18 x 1.25 thread.
APEowner said:
I wasn't aware of an O2 sensor with anything other than an M18 x 1.25 thread.
are all O2 sensors the same except for the plug ?
if thats all you had could you interchange one for another as long as it was a pre-heated or non pre-heated sensor ?
asking for a friend :)
californiamilleghia said:
APEowner said:
I wasn't aware of an O2 sensor with anything other than an M18 x 1.25 thread.
are all O2 sensors the same except for the plug ?
if thats all you had could you interchange one for another as long as it was a pre-heated or non pre-heated sensor ?
asking for a friend :)
Sadly I've been told by those that should know that they're not. They're similar and some are the same except for the plug but there are variations. They're also very sensitive to resistance changes in the wiring so you really shouldn't chop one connector off and solder another on. I have gotten away with changing the connector on one that used the same terminals during a dyno test but I wouldn't call that good practice.
APEowner said:
californiamilleghia said:
APEowner said:
I wasn't aware of an O2 sensor with anything other than an M18 x 1.25 thread.
are all O2 sensors the same except for the plug ?
if thats all you had could you interchange one for another as long as it was a pre-heated or non pre-heated sensor ?
asking for a friend :)
Sadly I've been told by those that should know that they're not. They're similar and some are the same except for the plug but there are variations. They're also very sensitive to resistance changes in the wiring so you really shouldn't chop one connector off and solder another on. I have gotten away with changing the connector on one that used the same terminals during a dyno test but I wouldn't call that good practice.
AIUI it's not the wiring that's the problem, it's the splice between them. Bosch sells a universal sensor kit that includes special crimp terminals for splicing the wires together that is supposed to address this problem.
codrus (Forum Supporter) said:
APEowner said:
californiamilleghia said:
APEowner said:
I wasn't aware of an O2 sensor with anything other than an M18 x 1.25 thread.
are all O2 sensors the same except for the plug ?
if thats all you had could you interchange one for another as long as it was a pre-heated or non pre-heated sensor ?
asking for a friend :)
Sadly I've been told by those that should know that they're not. They're similar and some are the same except for the plug but there are variations. They're also very sensitive to resistance changes in the wiring so you really shouldn't chop one connector off and solder another on. I have gotten away with changing the connector on one that used the same terminals during a dyno test but I wouldn't call that good practice.
AIUI it's not the wiring that's the problem, it's the splice between them. Bosch sells a universal sensor kit that includes special crimp terminals for splicing the wires together that is supposed to address this problem.
Correct, wiring, as in the cabling and associated parts. Not wires. The resistance of the splice has the potential to screw up the sensor.
The Bosch universal sensors are still not a one size fits all solution. They're actually a 14 sizes(10 4 wire sensors and 4, 3-wire sensors) fit almost all solution. That's still significantly fewer than the 100s of applications in the direct fit line.
I'm not aware of sensors that are of different size. But that's NOT to say they don't exist. Some OEM's do pretty desperate things.
Also, different sensor manufacturers have different responses, too- more than the wire issue. But none of that really matters unless you have to make the Nth degree of emissions.
Soldering is a very big no-no, as the wire is where the reference air comes from to compare to the exhaust.
