The owner of the car before me tried to do a dual point to multi point injection but failed. I am not sure what i have and what i don't have. Any help from these pictures would be great. Thanks...Please if anyone is in the West Chester, PA area and can come over and take a look would be great...

ECU Pics...



Wiring From ECU to Engine Bay

4th Injector

3rd Injector

2nd Injector

1st Injector

Distributor

Back on Intake Manifold

Wires into wiring harness



One of the boxes...

Wires from that box goes to white connector then 4 red wires to all injectors

Engine Bay pic

(Where wires that go into wiring harness) seem to end

1 more ECU pic

 

 

Not to be a dick, but you might want to clean it all up. If you have exposed wire connnections that might be a problem and the list goes on. Start from scratch and do it neatly, this could easily fix the problem without you even having to trouble shoot.

BTW use some wire loom and some heat shrink, electrial tape is a no no. I've seen a lot of guys do this and it just doesn't do the job too great for long periods of time. Plus the loom may look cheap, however, it really cleans up the place.

 

Thats what we started to do actually...it was alot worse. The only problem is i don't know where the wire harness is cut and it doesn't need to be cut. Its just a total mess. I was thinking of buying a new dx wiring harness and starting all over again...

 

http://tech.hybridgarage.com/t...g.htm

http://www.angelfire.com/d20/h....html

http://www.geocities.com/c_rexboy/mpfi.html

 

Yeah, I would rip it all out and start over. Might be more work but atleast you know its done right.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RexedM3 &raquo;</TD></TR><TR><TD CLASS="quote">Thats what we started to do actually...it was alot worse. The only problem is i don't know where the wire harness is cut and it doesn't need to be cut. Its just a total mess. I was thinking of buying a new dx wiring harness and starting all over again...</TD></TR></TABLE>

Sure but if what your suggensting means ripping out the underdash harness completely it would be a major pain in the ***....Unless you want to cut a nice lengthy piece of the ECU side harness and connect everything up.


I"m surey ou can salvage that?... maybe..... What i would do is find the best write up possible and then start under the Dash at the ECU........Looks like he did Swap and switch method as well as just cutting and heatshrinking/taping..... You could look at each color coming into the ECU and check if it has the right functional change..(which he did) ..He might have missed just a few things.... and the injection wiring it pretty easy as well


Check this out

http://www.fourthgenhatch.com/mpfi.html

This is the best write up i could find when i did mine.... just make sure you know that if you read through the whole thing, there is a difference between just cutting wires and the swap and switch method. Look at the Chart of the DX and SI, and figure out what each wire is going to and if it makes sense.


Modified by OptimusPrimeX at 7:35 PM 7/25/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RexedM3 &raquo;</TD></TR><TR><TD CLASS="quote">Thats what we started to do actually...it was alot worse. The only problem is i don't know where the wire harness is cut and it doesn't need to be cut. Its just a total mess. I was thinking of buying a new dx wiring harness and starting all over again...</TD></TR></TABLE>

why would he buy another dx harness? he could just pick up the hf or si harness and be set. no wiring at all.

but thats a bitch and id say **** that unless all else fails.

 

damn ghetttto conversion..... try to solder the connections man

 

i feel sorry for you.

 

So your saying if i buy a Si harness everything should just hookup

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by OptimusPrimeX &raquo;</TD></TR><TR><TD CLASS="quote">

Sure but if what your suggensting means ripping out the underdash harness completely it would be a major pain in the ***....Unless you want to cut a nice lengthy piece of the ECU side harness and connect everything up.


I"m surey ou can salvage that?... maybe..... What i would do is find the best write up possible and then start under the Dash at the ECU........Looks like he did Swap and switch method as well as just cutting and heatshrinking/taping..... You could look at each color coming into the ECU and check if it has the right functional change..(which he did) ..He might have missed just a few things.... and the injection wiring it pretty easy as well


Check this out

http://www.fourthgenhatch.com/mpfi.html

This is the best write up i could find when i did mine.... just make sure you know that if you read through the whole thing, there is a difference between just cutting wires and the swap and switch method. Look at the Chart of the DX and SI, and figure out what each wire is going to and if it makes sense.


Modified by OptimusPrimeX at 7:35 PM 7/25/2004</TD></TR></TABLE>

Listen to him I totally agree, and yeah make sure you solder that ****. Butt connectors are for buttheads !!!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RexedM3 &raquo;</TD></TR><TR><TD CLASS="quote">So your saying if i buy a Si harness everything should just hookup</TD></TR></TABLE> Only if you use the Si underdash too which would be a major PITA.

 

And i can't even find the resistor box in the engine bay at all. Where should it be located. And where do the wires from it go into. Could that be a problem why its not starting...

 

The box you showed is the old style resistor box, there are 2 types that I know of that one and then the one that looks like a little amplifier with heat sinks on it and what not.

 

my suggestion is sell the car.....get out while you still can

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by temp &raquo;</TD></TR><TR><TD CLASS="quote">my suggestion is sell the car.....get out while you still can</TD></TR></TABLE>
C'mon dude it is never that bad. It is just wiring for god sake.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXBart &raquo;</TD></TR><TR><TD CLASS="quote">
C'mon dude it is never that bad. It is just wiring for god sake. </TD></TR></TABLE>


oh it is that bad.......look how ghetto that **** is, i know its not his fault but really the easiest way would be a new engine harness and interior harness to solve his problem.......which will require him to invest a lot of time and some money

 

if you need help keeping it mpfi, PM me ill help you, ive done so many of these i can do it in my sleep lol

(i didnt bother reading any of the aboves bty)

 

Its no hurry and i didn't want to invest too much money into this project because it was only gonna be my daily driver. I just want to get it to a running state so it can be driven. And that old style resistor box is the right one...??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RexedM3 &raquo;</TD></TR><TR><TD CLASS="quote">. And that old style resistor box is the right one...??</TD></TR></TABLE> Yeah I've seen those used before. I've always used the other ones, never found a donor with the style you have.

Oh yeah I just noticed you are using a HF manifold, which probally ain't gonna do to much for performance, I got an Si manifold if you want one. I would see if you can get a Y8 mani though if you can find one. They are the best for d-series.

 

I have a BSEE. I'll fly to Philly with my multimeter and hook you up if you pay the Airtran RT ticket...lol. Never visited PA before...

Seriously though, you shouldn't even need to rip out all the old wiring, just clean it up, and shorten/resolder/loom the wires. It looks like the main part of the conversion is done:

*4 wires going thru the firewall:
2 to distributor
2 to injector harness

*MPFI injector subharness and resistor box (twinkie style, like I have. FYI: YOu should paint it yellow. "Where's the cream filling?" j/k).

All the other wiring mods can be done AT the ECU, dist, and injectors.

Oh, and it looks like he's already swapped the necessary TPS wires.

Funny thing, I've had problems like this before that ended up being a bad distributor causing the car not to start.

 

Since the person used 1 color wiring for ALL connections, troubleshooting the wiring is much more difficult.

Anyways, I made this up when doing my friend's MPFI/OBD1 swap. His car started up first shot with no codes, so I know this is pretty accurate.

Enjoy.
http://www.kveng.net/images/fr...m.jpg

 

nice keith! Very simple to follow.

 

o/t but is that an HF intake manifold he is using?