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OBD0 and OBD1 what are the exact differences

Old 18-Mar-2006, 10:10 PM
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OBD0 and OBD1 what are the exact differences

As stated above between obd 0 and obd 1 what are the exact differences, and please just dont say emissions related, im looking for exact details


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Old 18-Mar-2006, 11:55 PM
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thats a very general question. What do you mean? The difference between obd 0 and obd 1 ecus? engines? injectors?
Obd0 ecus use peak and hold injectors (low impedance), where as obd1 uses saturated (high impedance). Obd0 ecus use 1 (sometimes 2) single wire o2 sensor whereas obd1 ecus use 1 four wire o2 sensor. Obd0 distributors are different than obd1 distributors. Obd0 engines use cable trannys whereas obd1 engines use hydro.
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Old 19-Mar-2006, 04:00 PM
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those answers are just related to Honda vehicles, on the wide range of vehicles out there what are the main differences between obd0 and obd1 relating to sensors and ecu differences
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