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More vss questions


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Funkdrunk87
New User

Jun 19, 2017, 10:23 PM

Post #1 of 4 (286 views)
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I feel really dumb for asking this, but on a 2000ford escort, is there a difference between the iss and oss? Whenever I look to purchase them online all I ever find listed is the Vss. Are they both the same sensor, just in different locations?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jun 20, 2017, 5:58 AM

Post #2 of 4 (265 views)
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I have no idea what an "iss" or "oss" even is.

A VSS is a Vehicle Speed Sensor.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
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Jun 20, 2017, 7:02 AM

Post #3 of 4 (252 views)
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ISS is input speed sensor and OSS is output speed sensor. The output speed sensor is usually the vehicle speed sensor (VSS). The input speed sensor is used to determine the rpm of the input shaft of the transmission. Using the both sensors inputs along with engine rpm allows the power train computer to determine the transmission's current gear ratio and torque converter slip speed.





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Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jun 20, 2017, 7:53 AM

Post #4 of 4 (245 views)
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I should have realized that. I've never seen the acronyms used.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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