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Old 07-07-2021, 09:51 PM   #21
Reserector
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Run the single O2 sensor in one of the pipes. See how that goes. That should satisfy the system. It will only check one bank, but both banks should have the same mixture, theoretically.
If you changed the ecm and harness to the one that was on that engine, it should all plug right back up with the exception of the trans. What am I missing?
As for the trans, I am sure someone on here has swapped from auto to manual and wrote what to connect. We just need to do some searching for that little tidbit of knowledge.
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Old 07-07-2021, 10:41 PM   #22
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Originally Posted by Selftitleduser View Post
2 is to run a cross pipe directly across where the y was and install o2 there.
Danke
That sounds like a winner to me. A cross pipe or x-pipe is always great for performance, and it should nearly mimic the stock setup.
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Old 07-09-2021, 07:51 PM   #23
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Originally Posted by Reserector View Post
Run the single O2 sensor in one of the pipes. See how that goes. That should satisfy the system. It will only check one bank, but both banks should have the same mixture, theoretically.
If you changed the ecm and harness to the one that was on that engine, it should all plug right back up with the exception of the trans. What am I missing?
As for the trans, I am sure someone on here has swapped from auto to manual and wrote what to connect. We just need to do some searching for that little tidbit of knowledge.
thats what i am going to try first, hope the system wont even notice the change in exhaust.
as far as the ecm and harness, the flex and check connectors seem to be completely different, and the starting system changed between the models. instruments, grounds and connections for charging have to be spliced in. the issue is getting the 87 to communicate with the 94 ECM.
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Old 07-09-2021, 08:08 PM   #24
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this would be much easier with a wiring diagram for the 87 VG30i
The manuals at nicoclub list an 88 manual, but all the info is for 94.
maybe I am missing something?
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Old 07-09-2021, 08:19 PM   #25
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So, trying to understand where you are with this...

Still have the 87' wiring? ...and trying to install the 94' engine?


I thought you mentioned pulling the 94' harness and installing it in the 87' body... is this still on the table?

Please clarify...
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What he is saying is the aerodynamics of a D21 is a brick in the wind.
Probably at least as bad as a Jeep so worse than a cow.
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Old 07-09-2021, 08:21 PM   #26
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Check page 7+ here?: https://www.nicoclub.com/service-man...Section+EC.pdf
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Quote:
Originally Posted by Deerhurst
What he is saying is the aerodynamics of a D21 is a brick in the wind.
Probably at least as bad as a Jeep so worse than a cow.
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Old 07-09-2021, 08:24 PM   #27
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https://f01.justanswer.com/DETAILGUY...ion_wiring.pdf
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Old 07-09-2021, 08:29 PM   #28
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Originally Posted by 89'HBV6 View Post
So, trying to understand where you are with this...

Still have the 87' wiring? ...and trying to install the 94' engine?


I thought you mentioned pulling the 94' harness and installing it in the 87' body... is this still on the table?

Please clarify...
the wiring for the 87 is still in the 87, as well as the transplanted 94 wiring and the 94 VG30E. i will eventually pull the 87 harness out, but its not really in the way yet.
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Old 07-09-2021, 08:32 PM   #29
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That is for the VG30E, I need this but for the VG30I, the engine that was in my 87. short of that i will have to pull and continuity test all the instrument, power and grounds. also will have to be very lucky and patient.bahaha
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Old 07-09-2021, 08:41 PM   #30
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Originally Posted by Selftitleduser View Post
the wiring for the 87 is still in the 87, as well as the transplanted 94 wiring and the 94 VG30E. i will eventually pull the 87 harness out, but its not really in the way yet.
OK... What about this?

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...the issue is getting the 87 to communicate with the 94 ECM.
Are you referring to just the interior dash/lighting/ect when you say "87'"? So, what parts of the 87' needs to comm with the 94' ECU? Should not be much, if any 87' stuff to comm with the ECU, right?


BTW, I believe when you say ECM... I think we actually refer to it as an ECU. ECM is a Chrysler thing... But, basically the computer, right? (same page check...)

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Quote:
Originally Posted by Deerhurst
What he is saying is the aerodynamics of a D21 is a brick in the wind.
Probably at least as bad as a Jeep so worse than a cow.
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