Needing help with obd0 to obd1

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Old Oct 13, 2015 | 08:28 AM
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Icon4 Needing help with obd0 to obd1

So first thing is first, I have read multiple threads etc... So please don't say I need to search for the answers.

I put a z6 in a wagovan, I am using high impedance injectors, zerg ecu jumper, dizzy is wired in directly didn't use a jumper (its hooked up correctly).

So heres the deal, they jumper has 3 grounds... those grounds are pushing power through them?

When I try and turn the car over I get nothing! not even a click at the starter.. Well when I hook those "grounds" up I then can get a click but the wires will ground out.. I am super stuck, I have never had a swap be this tough! someone please educate me.. Thank you in advance!
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Old Oct 13, 2015 | 09:16 AM
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Default Re: Needing help with obd0 to obd1

So your ground wires are "grounding out" when hooked up...isn't that what they're supposed to do?

I hate to say this but have you tried back tracking the conversion harness wires to make sure they are correct? Some companies make mistakes sometimes, might be a good idea to at least eliminate that possibility for your set up. You can compare your harness to ECU pinouts found online.
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Old Oct 13, 2015 | 09:17 AM
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Default Re: Needing help with obd0 to obd1

Alright, they are pulling 9v.. Does that help? Isn't grounding out the correct terminology? correct me if I am wrong.
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Old Oct 13, 2015 | 09:24 AM
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Default Re: Needing help with obd0 to obd1

So its shorting out when I turn ignition on. Does that help?
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Old Oct 13, 2015 | 09:38 AM
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Default Re: Needing help with obd0 to obd1

Just a quick search yielded this:

Zerg Industries Jumper harness??? - D-series.org

Maybe you're experiencing the same problem.
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Old Oct 13, 2015 | 09:51 AM
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Default Re: Needing help with obd0 to obd1

I've read that once already. But this is happening on different ecu jumpers..
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Old Oct 13, 2015 | 12:56 PM
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Default Re: Needing help with obd0 to obd1

anyone?
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Old Oct 14, 2015 | 02:55 AM
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Default Re: Needing help with obd0 to obd1

I'd say try running the A6 dizzy and ECU and see if you can get the motor to crank up and run. It won't hurt it to idle. I'd say it is likely the harness or your distributor repin. But if you say it isn't those, it is tough to troubleshoot.
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Old Oct 14, 2015 | 06:52 AM
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Default Re: Needing help with obd0 to obd1

What about the starter being the issue? this is why I think that.. I will unhook the ignition 12v from the starter, then I will take the 12v post from starter to the ignition post and try and jump, and it will just turn on the interior, like dash lights, seats belts etc.. I am wondering if the starter is shorting out on the block maybe.. IDK, this is completely weird, I have been working on cars for a long time and I have never encountered this at all. Also the jumper comes with the PG wires that states ground, well those are pulling 8-10v when I test those..
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Old Oct 14, 2015 | 06:59 AM
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Default Re: Needing help with obd0 to obd1

The starter gets a signal from the key in the last 'on' position. Other than that, it has 12v direct from the battery and grounds to the transmission casing and to the chassis through the trans ground. If you think it is the starter, swap starters real quick and give it a turn.
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Old Oct 14, 2015 | 07:14 AM
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Default Re: Needing help with obd0 to obd1

I am gonna have to give that a try today. I really wanted to see if anyone else had encountered this issue as well, and what steps they took.
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Old Oct 15, 2015 | 08:44 AM
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Default Re: Needing help with obd0 to obd1

any one else?
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Old Oct 17, 2015 | 02:31 PM
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Default Re: Needing help with obd0 to obd1

please help, I need to get this car going!! please please! lol
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Old Oct 18, 2015 | 10:16 PM
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Default Re: Needing help with obd0 to obd1

try an a6 ecu and distributor. I agree I think it's the harness or repin. I converted a 99 hatchback to OBD1 with a rywire harness which is supposed to be the best. Had an issue...
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Old Oct 19, 2015 | 05:27 AM
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I just don't understand how that will affect somethings shorting out, I did check my starter it's good, I looked over the ecu nothing is showing burnt or swelled, I guess the last two things are the only things left that actually changed in the car. What's crazy is the swap was running fine in the eg.
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Old Oct 19, 2015 | 06:13 AM
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Default Re: Needing help with obd0 to obd1

But was the swap running any of those conversion parts?
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Old Oct 19, 2015 | 06:28 AM
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Only thing different is the ef engine harness and jumper.
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Old Oct 19, 2015 | 08:34 AM
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Default Re: Needing help with obd0 to obd1

Originally DPFI or MPFI?
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Old Oct 19, 2015 | 08:38 AM
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Dpfi
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Old Oct 19, 2015 | 09:03 AM
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Default Re: Needing help with obd0 to obd1

You converted everything right? Not just the ecu jumper and distributor?
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Old Oct 19, 2015 | 09:20 AM
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Let's see I moved pins around on the ecu harness, didn't use low impedance injectors so I have all 4 injectors going straight to ecu harness... Am I missing more?
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Old Oct 19, 2015 | 09:48 AM
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Default Re: Needing help with obd0 to obd1

I believe that you're also supposed to flip wires on the TPS.

Granted there are no "ground" swaps involved in the MPFI conversion process, are you supposed to add grounds with that conversion harness? Just to be clear I'm understanding this as you are adding multiple ground points to chassis. My understanding is that an adapter harness just converts your existing ECU connector to a different ECU connector which in your case adds necessary plugs for a different distributor and VTEC related parts.
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Old Oct 20, 2015 | 02:29 AM
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Default Re: Needing help with obd0 to obd1

Did you try running the engine OBD0 with the A6 distributor and ECU?
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Old Oct 20, 2015 | 06:41 AM
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So I tried just eliminating the jumper put the obd0 ecu in and just to see if it would even turn over still. I get nothing at all! I can't even run a ground from the starter to the chassis with out it melting the wire when I try and turn it over, I'm stuck at this point. The car should at least turn over! It's not.

-- car won't turn over
-- ground melts when I try and start
-- when ground is connected start will try to turn then melts wire..
-- the jumper "grounds" pull 9-10v when I try to start..
-- the ignition 12v to starter only get 7-8 volts as well.


These are my issues, I really don't feel changing the dizzy and ecu will make it turn over.
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Old Oct 20, 2015 | 07:30 AM
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Default Re: Needing help with obd0 to obd1

It won't start with your OBD0 ECU (DPFI ECU right?) unless you run it with the matching intake manifold and distributor.
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