My 91 240 with LH 2.4 is throwing a check engine light and the code comes up 02 sensor. Will an older style single wire work without throwing a code? The main point of the two other wires is heating the sensor so it works quicker but my sensor has been moved to down pipe and just after the turbo so heating up quickly shouldn't be an issue. With a difference of 100.00 its worth it to me to cut corners if it will work.
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Will An Earlier O2 Sensor Work With A Later Car?
Started by derosa, Jun 16 2009 03:42 AM
3 replies to this topic
#1
derosa
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Posted 16 June 2009 - 03:42 AM
DD: 98 v70xc with 142k miles and remarkably little rust.
Project: 79 262c, trying for a show car.
Project: 79 262c, trying for a show car.
#2
Three Fat Tigers
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Posted 16 June 2009 - 06:11 AM
Yes a single wire will work. However, I highly recommend this one:
http://www.amazon.co.../dp/B000BZI4KM/
it's a newer planar type sensor, 43$ shipped.
It comes with a really nice weather proof connector that makes it a breeze to install, using part of the wiring from your existing sensor. I recently put one on a '95 960 and one on my '94 940T, works great. It's 4 wire, but hooking up the 4th (grey) wire is optional (as stated in the instructions from Bosch), if you want to hook it up, just extend the wire up to one of the bolts for the fuel rail on the intake manifold.
http://www.amazon.co.../dp/B000BZI4KM/
it's a newer planar type sensor, 43$ shipped.
It comes with a really nice weather proof connector that makes it a breeze to install, using part of the wiring from your existing sensor. I recently put one on a '95 960 and one on my '94 940T, works great. It's 4 wire, but hooking up the 4th (grey) wire is optional (as stated in the instructions from Bosch), if you want to hook it up, just extend the wire up to one of the bolts for the fuel rail on the intake manifold.
#3
derosa
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Posted 17 June 2009 - 04:04 AM
Three Fat Tigers, on 16 June 2009 - 06:11 AM, said:
Yes a single wire will work. However, I highly recommend this one:
http://www.amazon.co.../dp/B000BZI4KM/
it's a newer planar type sensor, 43$ shipped.
It comes with a really nice weather proof connector that makes it a breeze to install, using part of the wiring from your existing sensor. I recently put one on a '95 960 and one on my '94 940T, works great. It's 4 wire, but hooking up the 4th (grey) wire is optional (as stated in the instructions from Bosch), if you want to hook it up, just extend the wire up to one of the bolts for the fuel rail on the intake manifold.
http://www.amazon.co.../dp/B000BZI4KM/
it's a newer planar type sensor, 43$ shipped.
It comes with a really nice weather proof connector that makes it a breeze to install, using part of the wiring from your existing sensor. I recently put one on a '95 960 and one on my '94 940T, works great. It's 4 wire, but hooking up the 4th (grey) wire is optional (as stated in the instructions from Bosch), if you want to hook it up, just extend the wire up to one of the bolts for the fuel rail on the intake manifold.
DD: 98 v70xc with 142k miles and remarkably little rust.
Project: 79 262c, trying for a show car.
Project: 79 262c, trying for a show car.
#4
Three Fat Tigers
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Posted 17 June 2009 - 05:17 AM
The purpose of the extra ground is to ensure signal integrity. Where 4 wire are OEM, the grey wire almost always grounds at the fuel ECU connector; in LH2.4, the main ground for the fuel ECU are at the fuel rail bolts, so I would either run it inside the car to the fuel ECU connector or to the fuel rail bolts. However, you can ground it (anywhere you want), or not ground it, it's all up to you.
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