Ef dpfi to obd1 prob no start no nothing!!

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Old Jul 27, 2013 | 09:30 AM
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88_hatch_ls's Avatar
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From: joplin, mo, us
Default Ef dpfi to obd1 prob no start no nothing!!

This is a redo of my last post but I'm going to tell in detail of what I did maybe it will help.

Ok I have an 89 wagon non rt4wd that I have swapped lsv in. My buddy sent me the mpfi conversion harness cause that's all he had so I went ahead and did the dpfi-mpfi swap: moved c1 and c2 to b10 and b12, I cut the a1 a2 a3 and a5 wires from the jumper and just ran them straight to the injectors and put "inline" resistors to the injector wires and merged them all together to go to a15. Then for the dizzy I cut b15 and b16 on the conv harness and ran them for the two wires I needed for the dizzy. I matched up all the wires for the dizzy to my stock dx harness (made a jumper from my stock plugs to the obd1 dizzy plug) and ran the two new ones I just mentioned. I've also ran the new o2 sensor wires and the vtec wires directly from the conv harness too. Here's the problem... I turn the key on the tach jumps straight to 3.5 g's and doesn't come down, the check engine light stays on so does oil and battery, fuel pump doesn't kick on for the prime or anything, when I crank it there is no spark or fuel.. I am lost!! I traced all wires that I made for the dizzy from there correct spot in ecu to what color they are supposed to be at the dizzy plug thinking I got one wrong or something but they ohm'd out fine. The only ones I did not ohm were the two wires in the two prong connector to the dizzy, because I do not know where they go.. I wanted to tell you exactly everything I did incase I missed something or didn't plug something in right so if you have any advise for me I would really appreciate it!!!! I
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Old Jul 27, 2013 | 01:28 PM
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jdmjunkieXL's Avatar
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From: West
Default Re: Ef dpfi to obd1 prob no start no nothing!!

The 2 wire connector to the dizzy i think is blue engine speed and black/yellow ignition should match up same colors on the obd-0 10pin rectangle plug on pass side
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Old Jul 27, 2013 | 01:45 PM
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88_hatch_ls's Avatar
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From: joplin, mo, us
Default Re: Ef dpfi to obd1 prob no start no nothing!!

I figured as much. So I was doing so more diagnosing and cam up with this: Ecu plugged in the orange,white, and white/blue wires from the dizzy all ohm out.. As in I can put a wire from the volt/ohm meter on the orange wire to dizzy and the other wire to the white wire from dizzy and there are ohms like they are touching somewhere. I can do that with all three wires when the Ecu is plugged in but when I unplug it it shows no ohms.. Are those three wires supposed to be connected in the Ecu somewhere? If not wouldn't that indicate my Ecu is bad?
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Old Jul 27, 2013 | 04:23 PM
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turn&burn89's Avatar
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From: South Puget Sound
Default Re: Ef dpfi to obd1 prob no start no nothing!!

dont know too much about the swap but sounds like a bad ground on the ecu side....?
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Old Jul 27, 2013 | 06:13 PM
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88_hatch_ls's Avatar
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From: joplin, mo, us
Default Re: Ef dpfi to obd1 prob no start no nothing!!

the swap is built ls/v turbo w/ b16 head obd1
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Old Jul 28, 2013 | 01:44 AM
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swordofdoom's Avatar
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From: Lincoln, WTF, USA
Default Re: Ef dpfi to obd1 prob no start no nothing!!

If you have a chipped OBD1 you should be able to datalog or even find a way to get codes for what your missing. Shoot me a PM if you need help with a datalogger.
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Old Jul 28, 2013 | 08:46 AM
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From: joplin, mo, us
Default Re: Ef dpfi to obd1 prob no start no nothing!!

Ya I try to get the codes by jumping the two wires but it does nothing, it's chipped with chrome right now that's how I got the Ecu. I haven't soldered in that piece to datalog yet though. I really want to see if anyone knows about the three wires I mentioned if they are supposed to be connected in the Ecu somewhere?
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