Turbo_Mike

I just put a 2000 ls motor into my 92 vx, and following tom's right up, i used the obd2 engine harness and plugged it into my vx harness. There was a 4th vx plug that had no where to plug into the ls harness. I"M using an obd1 p75 ecu.

I'm getting spark and fuel, its turning over, but wont fire. Timing is on correctly, but i havent checked compression yet. I still need a pcv valve and to figure out where the control box vacuum hoses go, but that should only affect idle, not start up.

All my grounds are good....what else should i look for??


Also...there is a long lead coming from my pos. terminal on the ls harness that looks like it SHOULD be a groudn wire, but certainly isnt. where should this wire go to? ( No its not the one for the starter) ITs long, thick, and has white sheathing.

Turbo_Mike

just checked compression which was good....

If i was getting fuel and have been cranking it over as much as i have been, should the plugs be wet? I pull them out and they are dry, but i cant smell guess cause i have a realy bad cold and its like 27* outside.

Turbo_Mike

no CEL either

KevronsEG

Do you hear your fuel pump prim when you turn the key forward? Not to start it just all the way forward. If you dont, it means your pump is not turing on. The pump prims as long as the check engine light stays on then goes off when you turn the key forward. sorry if its confusing.

Kevron

Turbo_Mike

Yea sorry, pump is priming. I'm getting pressure in teh fuel rail...but maybe the injectors arent firing..? The plugs are not getting wet.

Turbo_Mike

Threw my p28 in it and it only says code 21.

I would think if there was aproblem with the harness/ injectors it woudl be throwing a code right?

Turbo_Mike

BTW, this car ran like a top 3 days ago .

Turbo_Mike

ttt

brmiddle

I say take it over to Bun or Flip see if they can hook it up!

wanna see it when them 84's come rollin out!

743power

Turbo_Mike

Thanks for the pic, but there is a post on my positiver terminal that has ANOTHER lead thats like 2 feet long coming off of it...never seen anything like it before. I can get a pick in a day or two.

I tested out the injectors tonight, and they were seeing 12 volts to only one prong on the clip not both....then i grounded out the other prong to make the injectors 'click' and they didnt....?

Turbo_Mike

bmp

Turbo_Mike

help please

Turbo_Mike

1) I figured out the long lead i was talking about goes to the ABS pump

2) I followed the procedure in the hsm and tested the injectors in and out , back and forth. everything checks out. now i'm wondering if its the feed line to the fuel rail, and if i installed it correctly?

Should the bolt/fitting coming out of the fuel rail have a hole going through it? or only on the end going straight in the fuel rail? Mine only goes straight in, with no holes going straight through, but i have a d series in the garage that has a hole going straight down trhough it where the fuel line bolts on.... Could i be using the wrong hose setup or something?

Turbo_Mike

took out fuel rail and injectors and they are not squirting... all wiring checks out and is correct. injector resistance is perfect.... could all four be clogged from sitting????

Sleepy_Red_hatch

wow talk about talking to yourself.....bump for you my good man

743power

ecu fuse blown?

eg6_rick

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 743power &raquo;</TD></TR><TR><TD CLASS="quote">ecu fuse blown?</TD></TR></TABLE>

^^ that and check your firing order, don't forget ground wires by the thermostat next to right under the dizzy. GL.

Contender25

Em aren't obd2 and obd1 injectors differen't?, at least from what i heard. If you're using the ls obd1 ecu to plug right up but you're injectors are obd2 then that might be the problem "possible" but i would check it out anyways since it sounds like you got everything else checked out fine.

KevronsEG

as long as you run the obd2 Engine harness it works fine

Turbo_Mike

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sleepy_Red_hatch &raquo;</TD></TR><TR><TD CLASS="quote">wow talk about talking to yourself.....bump for you my good man</TD></TR></TABLE>

lol..thanks. just wanted to keep it undated

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eg6_rick &raquo;</TD></TR><TR><TD CLASS="quote">

^^ that and check your firing order, don't forget ground wires by the thermostat next to right under the dizzy. GL.</TD></TR></TABLE>

firing order is good, i'm getting spark, thats not the issue. ground are all good, i double checked and cleaned them up more.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Contender25 &raquo;</TD></TR><TR><TD CLASS="quote">Em aren't obd2 and obd1 injectors differen't?, at least from what i heard. If you're using the ls obd1 ecu to plug right up but you're injectors are obd2 then that might be the problem "possible" but i would check it out anyways since it sounds like you got everything else checked out fine. </TD></TR></TABLE>

you can use obd2 junk in an obd1 car.... the only difference i know of is the clips ( as well as dizzy, alternator, etc) but yea...i that shouldnt be the problem

jdmh22delsol

u used obd1 harness with obd2 injectors if u wired the obd2 plugs onto obd1 harness the wires are most likely backwards i did it b4 the 2 wires on obd2 injectors are backwards compaired to obd1 which will make them not work

743power

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmh22delsol &raquo;</TD></TR><TR><TD CLASS="quote">u used obd1 harness with obd2 injectors if u wired the obd2 plugs onto obd1 harness the wires are most likely backwards i did it b4 the 2 wires on obd2 injectors are backwards compaired to obd1 which will make them not work</TD></TR></TABLE>

he used the obd2 harness

Turbo_Mike

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 743power &raquo;</TD></TR><TR><TD CLASS="quote">

he used the obd2 harness</TD></TR></TABLE>

Contender25

Well try switching back to you're obd1 harness to the car with the obd1 injectors, might as well...only takes like 5 mins.