There are three part numbers for a 89+ 7M-GTE MA70 knock sensor:
89615‑30020 08/1988 to 08/1991
89615‑33010 08/1991 onwards (supplied by MATUSITA)
89615‑33020 08/1991 onwards (supplied by NIPPONDENSO)
Both of the 1991 onwards sensors have been replaced by another number 89615-32030, so I assume that they were both interchangeable (FYI this replacement part no. is shared by later model Camry, Highlander, Rav4 and others).
However what I was wondering is whether the later model sensors are compatible with an earlier car. The only component really affected by the knock sensor is the wiring harness and ECU so my questions are:
I assume the engine block mounts for the sensors wasn't modified in 1991?
Any help appreciated.
-Tom
89615‑30020 08/1988 to 08/1991
89615‑33010 08/1991 onwards (supplied by MATUSITA)
89615‑33020 08/1991 onwards (supplied by NIPPONDENSO)
Both of the 1991 onwards sensors have been replaced by another number 89615-32030, so I assume that they were both interchangeable (FYI this replacement part no. is shared by later model Camry, Highlander, Rav4 and others).
However what I was wondering is whether the later model sensors are compatible with an earlier car. The only component really affected by the knock sensor is the wiring harness and ECU so my questions are:
- is a pre-1991 harness/KS connector different than a post-1991 harness?
- if I'm running a later model (i.e. a 1991 or above model) ECU, will the newer model knock sensors work?
I assume the engine block mounts for the sensors wasn't modified in 1991?
Any help appreciated.
-Tom