2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

S5 TII ECU ground location

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Old Apr 28, 2020 | 03:24 PM
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S5 TII ECU ground location

There are a lot of threads about it, but no clear answer regarding S5 TII car.

Where exactly is the "infamous" ECU ground point located?
Under the intake manifold?
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Old Apr 28, 2020 | 06:21 PM
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https://www.rx7club.com/2nd-generati...ation-1003231/
Pictures:
Proper RX-7 Grounding Procedures
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Old Apr 29, 2020 | 03:31 AM
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Thanks for the links but I have already checked that.

There is only info about S4 cars and a statement that:
On the S5 NAs and some TIIs, the ECU ground can generally be found on the upper intake
I'd like to confirm that on the S5 TII it is also on top of the iron before I start disassembly.
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Old Apr 29, 2020 | 04:33 AM
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The series 4 and 5 ecu earth is on the top of the rear rota housing
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Old Apr 29, 2020 | 09:19 AM
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From: █▬█ █▄█ █▬█ █▄██▬█ █▄█ █▬█ █▄█
Originally Posted by WJM ROTARIES
The series 4 and 5 ecu earth is on the top of the rear rota housing
Near the bell housing
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Old Apr 30, 2020 | 05:04 AM
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No on one of the 2 raised sections with threads taped in them on top of rota housings
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Old May 2, 2020 | 10:42 AM
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From: █▬█ █▄█ █▬█ █▄██▬█ █▄█ █▬█ █▄█
Originally Posted by WJM ROTARIES
No on one of the 2 raised sections with threads taped in them on top of rota housings
Yes, on the rear rotor housing near the bell housing.
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