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Old 11-13-2017, 07:55 PM   #1
maxitoman007
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Default Are all 3 wire O2 sensors the same?

Would they all work as long as they were Titania style if I soldered the heater leads and signal leads to the original Volvo wires (bypassing the inevitable incorrect connector). They should all work the same right? With just the connectors changing? Could I use any 4 wire if I soldered the heater wires and signal wire then grounded the ground wire?
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Old 11-14-2017, 03:03 PM   #2
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Old 11-14-2017, 07:03 PM   #3
ZVOLV
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Two for heater and one for signal. Do it.
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Old 11-15-2017, 02:01 AM   #4
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All signal is the same?
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Old 11-15-2017, 06:59 PM   #5
ZVOLV
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Yep. 0.1v to 0.9v sweep. Once things changed over to AFR sensors is where it gets much much different.
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Old 11-19-2017, 11:18 PM   #6
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Quote:
Originally Posted by maxitoman007 View Post
Would they all work as long as they were Titania style if I soldered the heater leads and signal leads to the original Volvo wires (bypassing the inevitable incorrect connector). They should all work the same right? With just the connectors changing?
Could I use any 4 wire if I soldered the heater wires and signal wire then grounded the ground wire?

All signal is the same?
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Originally Posted by ZVOLV View Post
Yep. 0.1v to 0.9v sweep. Once things changed over to AFR sensors is where it gets much much different.
Zirconia (the cheaper one in Bosch Volvos) creates its own voltage, .2-.8, or "0.1v to 0.9v sweep" if you like.

Titania (the wonderfully expensive one in Regina Volvos) is a variable resistor. The computer feeds it 5v, and as the resistance changes with O2 levels, the voltage drop is measured between 0v and 5v.

The signals from the two types are not the same, and cannot be swapped. (Despite a few old posts here that say My car runs fine with the cheaper "wrong" sensor. You could also slap a 4-barrel double-pumper Holley on a 50cc scooter and make it "run", too, but... )

If you are 100% sure that the new one is Titania, there should be no problem. The 4-wire (and 3-wire) "universal" sensors are almost always Zirconia.
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Old 11-23-2017, 03:56 PM   #7
classicswede
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There is also a odd ball sensor volvo used that was a sweep from 0.8v to 1.6v
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Old 11-24-2017, 11:29 AM   #8
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You could also slap a 4-barrel double-pumper Holley on a 50cc scooter and make it "run", too, but... )
I like that.......

I wonder how many people still know what a 4 barrel "double pumper" Holley
really is??
It's good to stilll see a few old hands around.
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