zucker what is the O2# censor for 87 944 n/a?
05-09-2002, 12:26 PM
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zucker what is the O2# censor for 87 944 n/a?
zucker
Hello and thank you. I am ruinning very rich in my car and have suspected the O2 for some time. If you would be kind enough to give me the correct number for the o2 censor for my car I will purchas one friday. I have an 87 Porsche 944 N/A
Thank you and welcom aboard
Hello and thank you. I am ruinning very rich in my car and have suspected the O2 for some time. If you would be kind enough to give me the correct number for the o2 censor for my car I will purchas one friday. I have an 87 Porsche 944 N/A
Thank you and welcom aboard
05-10-2002, 03:34 AM
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[quote] Ok here it is for all of the 944/968 people.
The 15725 will fit all 944/968(including turbo) 85-95. You pre-85 1/2 people may want to look and make sure that the sensor is a one or three wire. If its a 3 wire use the above if its a 1 wire then use the 11027 as this is the universal one wire. The part number mentioned earlier(somebody else in an earlier post) is discontinued and I am unsure what ceramic it has.
OK as far as the three wire four wire thing goes here it is.
The four wire parts come in two different varieties...case grounded and isolated ground.
The case ground acts like the three wire where the outer electrode of the sensor is grounded through the sensor housing, however in the case of the four wire case ground the sensor has an additional ground that is wired directly to the ECU(reduces noise in SOME cases). Putting a 4 wire CASE ground sensor in place of a 3 wire has NO added benefit. In fact since the fourth wire has no were to go and also if the owner grounds it near the ECU or on the vehicle this could introduce water into the sensor because the sensor restores the reference air through the wire harness(see my earlier post)and having this non-sealed ground could contaminate the reference air.
Using a four wire isolated ground(outer electrode has an isolated ground running from the electrode to the ECU)on a three wire application simply wont work because the sensor circuit is open because the sensor is not grounded.
Its best to use what originally came with the car.
Hope this helps!! <hr></blockquote>
The 15725 will fit all 944/968(including turbo) 85-95. You pre-85 1/2 people may want to look and make sure that the sensor is a one or three wire. If its a 3 wire use the above if its a 1 wire then use the 11027 as this is the universal one wire. The part number mentioned earlier(somebody else in an earlier post) is discontinued and I am unsure what ceramic it has.
OK as far as the three wire four wire thing goes here it is.
The four wire parts come in two different varieties...case grounded and isolated ground.
The case ground acts like the three wire where the outer electrode of the sensor is grounded through the sensor housing, however in the case of the four wire case ground the sensor has an additional ground that is wired directly to the ECU(reduces noise in SOME cases). Putting a 4 wire CASE ground sensor in place of a 3 wire has NO added benefit. In fact since the fourth wire has no were to go and also if the owner grounds it near the ECU or on the vehicle this could introduce water into the sensor because the sensor restores the reference air through the wire harness(see my earlier post)and having this non-sealed ground could contaminate the reference air.
Using a four wire isolated ground(outer electrode has an isolated ground running from the electrode to the ECU)on a three wire application simply wont work because the sensor circuit is open because the sensor is not grounded.
Its best to use what originally came with the car.
Hope this helps!! <hr></blockquote>