Help im going crazy!!

[madsupra88]

Hey whatsup guys, im having a few issues here that ive been trying to work out but i just cant seem to figure ANYTHING out.

My project that ive been workin on for the past 2 years is almost done, and im not sure if im missing something here or what, my setup =

built motor
th350 trans
FFIM

Removed ABS
Removed Cruise Control

This is a 88 turbo harness and used to be a 5sp.

problem #1

These two wires are coming off of the main harness near the injector clips.. anyone know where they go or what their for?

Problem #2

What is this? the mini plug there!

Problem #3

The car does not get any spark, no matter what i do. i have done the following

Tested my ingniter (good) also swapped a known good one in.

Tested my coil packs (good) also swapped with a couple known good ones.

I have new plug wires

new spark plugs

It cranks strong but will not start due to no spark. im running out of ideas here and im really pissed i cant get my new motor to start.

also does this seem ok

I have a decent gauge wire hooked up from chassis to the block. is that necessary!

I never ask for help cuzz im usually really good at workin on our cars, but this one is blowing my mind.

any help is greatly appreciated.

p.s sorry for the long post

-saif

 

[lsaint07]

is your cps hooked up or in good working condition?

 

[thaiyota]

first pix looks like a plus going to r154 tranny(i have to look at mine later to confirm this)

second pix, mine is like that too, car runs fine..

no spark, check ur fuse..

 

[mdr40z]

cps in wrong or ground under coil pack?

 

[madsupra88]

cps in wrong or ground under coil pack?

I had my buddy come over with his car and his is not even grounded! so i dont think thats the problem although ill ground it anyways.

 

[mdr40z]

I had my buddy come over with his car and his is not even grounded! so i dont think thats the problem although ill ground it anyways.

my car wouldn't run without it, beat my head on the wall for days trying to figure it out too.

 

[MKiiiturbodrift]

yeah it needs a ground. it may just be your buddys is grounding through the head or valve covers. Check the CPS like mentioned before, and make sure that there is no loose connections under the fuse box cause thats what got me.

 

[simpsons7s]

check your ecu fuse (15A) by the driver kickplate

 

[jetjock]

1) The EFI fuse in in the engine compartment and all that's needed to check it is to see if the check engine light comes on with the key.

2) The coil pack bracket does not need to be grounded. Any engine that won't run without it has other problems.

3) Using a meter would go a lot further towards finding this simple problem.

 

[madsupra88]

I was testing EVERYWHERE for voltage yesterday with my meter, i get voltage to the igniter, and also coming out of the igniter into the coil pack plugs. and also get voltage coming out of the coil packs power plugs. so i know coil packs are getting power. i have tried 3 known good ones and no luck.

only thing i havnt checked is my cps, but even if its out of line, i didnt think it would eliminate spark completley!!

all fuses are good, im gonna plug in a different ecu also to rule that out.

 

[jetjock]

The igniter supplies ground to the coil packs so maybe you should start looking at the grounding. The igniter has to be bolted to the chassis to work for example. Does the tach flicker during cranking? A bad CPS or it's connector wiring (common) will prevent spark. And I see no mention of codes. Fwiw it's often easier to remove the CPS and spin it by hand with the key on when troubleshooting a no spark condition. Saves wear and tear on the starter and battery. Course, if you do that you'll have to reinstall it at some point...an easy task that, astonishingly, seems to defeat many here.

 

[madsupra88]

The igniter supplies ground to the coil packs so maybe you should start looking at the grounding. The igniter has to be bolted to the chassis to work for example. Does the tach flicker during cranking? A bad CPS or it's connector wiring (common) will prevent spark. And I see no mention of codes. Fwiw it's often easier to remove the CPS and spin it by hand with the key on when troubleshooting a no spark condition. Saves wear and tear on the starter and battery. Course, if you do that you'll have to reinstall it at some point...an easy task that, astonishingly, seems to defeat many here.

Ok im getting codes

22
24
34
51

And if its possible could you clear up on how to play with the cps again, i couldnt quite understand it.

I do appreciate the help

 

[madsupra88]

btw when i first dropped the motor in the car, i had to hard wire the cps wires because the clip coming off the harness was broke, so i cut the one off the cps and just wired it with no clip.

hmmm come to think about it..... maybe i mixed one of the wires!

is there anyway someone could tell me this

what are the colors of the wires coming off of the cps

and what colors do the connect to on the harness??

I feel like an idiot now

 

[jetjock]

None of those codes will prevent spark but all need to be repaired at some point. For now clear them (they may be old) and check for new ones after cranking the engine.

Although I've never had the problem CPS wiring can become faulty in the area of the connector or the connector itself can go bad. Usually happens because the hose heat shield is missing. Try jiggling the wires there. You can also try checking the pick up coil signals or resistance, either at the connector or at the ECU.

Edit: I see you hard wired it. Yeah, you need to make sure it's right....

 

[mdr40z]

with regard to the cps, I install it by the book then if it doesn't start turn one tooth in either direction.
It doesn't ever seem to be right the first time

 

[jetjock]

Do what works I guess. I've never had to move it one tooth. Hell, the only time I follow the book is if I've turned the engine over when it's out and even then it goes right in and times the way it should. Otherwise I just mark it. Simply offset it a bit so that after it's seated the pickup ends up being triggered when the bracket slot is somewhat centered in the bolt hole. It's not rocket science...

 

[lsaint07]

i bet you got the wires wrong. i ran into the same problem. here is the info i got for my situation from a fellow member.

Just looked at my '89:
CPS.................Harness
Green.................Red
Red....................Blue
Tan (or white?)....Black
Yellow................Yellow
__________________

 

[madsupra88]

Ok

rewired my cps and no luck! the wires on the cps and my harnes are faded ( i have 2 tan on my cps) so i dont know which on is wich. so i wired them one way, no luck. and rewired them the other way and still no luck. i eben swapped in a known good cps and no luck

I had a batt relocation, so i moved it back up front to see if it would make a difference and nope.

swapped in a different ecu and no luck


I went through all my wiring and found a few shady spots that were weak/broken wires

soo. i took my whole engine harness out of the car and now im in the process of testing continuity on each wire to make sure its getting seignal from the ecu plug to the engine plugs.


Man this this giving me a headache.


how many ground are on the car could some one point them out!

 

[jetjock]

Err, no need to remove the harness for that. Besides, signal tracing would have been easier and far more effective. And it's a no brainer to figure out the CPS wiring. After all the ECU pinout is in the manual. Once the four wires are identified they can then be matched to the CPS pickups. The identity of those are obvious and even if they weren't you could only get it wrong once.

Ground points are here:

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=148

 

[madsupra88]

Ok ive made sure of everything everyone mentioned but still no luck.

Im almost positive its my switch signal!!1

I dont think my computer is getting power because of my switch! i did get a code 51 wich is a switch signal, without that my computer wont work which in turn im cranking the car with a dead computer!

now where the crap do i start lol damn man this is so frustrating.