Need help!

[xarewhyayen]

Okay last weekend i finished getting my new soop all together but it wouldnt start. I figured it had to be the old alarm system(aftermarket). So i pulled that out and restored the stock wiring setup to the best of my knowledge. It looks like its back to normal. The car still wont start. When i turn the key to start, i dont notice the fuel pump priming, but when i check the fuel pump operation using the diagnostics port (B+ to FP), the pump works fine.

I tried a spark test and theres no spark while cranking. I also tested the coils per TSRM as well as the primary ignition plugs that go into the coils. I also tested power to the ignition module and tried a known working ignition module+coil pack.

I cant figure out what would cause me to have no spark or ignition, I checked every fuse i could see and even tried a friends EFI main relay.

ANY advice at all that makes sense will be appreciated. If youre a noob, dont bother, but thanks for reading about my misfortune.

 

[xarewhyayen]

Anyone??? im still here trying to figure it out... i even just tried a known good ECU and that didnt do anything either. This shit is killing me

 

[MK3Fury]

Well the EFI fuses and relays would turn off the fuel pump and have nothing to do with the actual ignition. Maybe there is a fuse for the igniter? Or have you tried the cam position sensor? From what the TSRM states that if it is not the Coil or Igniter or fuses then it will prolly be the CPS

 

[jdub]

Check your grounds...the ones that bolt up to the intake manifold.

 

[xarewhyayen]

I tested the cps per TSRM and the pickup coil resistances are fine. The coil pack is grounded, i checked for continuity from the coil pack ground to the -battery and its fine. Ill check around and see if any grounds are missing or not bolted on right again though i checked that several times. I checked all fuses.

 

[MK3Fury]

This might be stupid, but have you replaced the plugs or wires?

 

[3p141592654]

Make sure the ground leads shown here (not attached in the picture) are attached to the bolt on the intake runners. Make sure the igniter was plugged back in. The other thing would be to check for any codes after cranking.

 

[jdub]

Make sure the ground leads shown here (not attached in the picture) are attached to the bolt on the intake runners. Make sure the igniter was plugged back in. The other thing would be to check for any codes after cranking.

Yep! That would be them...just to the left of the dipstick. These are easy to miss when hooking everything up!

 

[xarewhyayen]

The spark plugs are new and the wires came off my working 90t. I even tried a friends spark plug in the end of one of my wires to see if it sparked... no go.

I just checked out those grounds, and i double checked them before i put the motor in. Theyre on there still.
Code 12 showed... which means:
12 RPM Signal
Diagnosis
No "NE" or "G" signal to ECU within 2 seconds after engine has been cranked.
Trouble Area
Distributor, or CPS, circuit
Distributor or CPS
Starter signal circuit
ECU

What exactly is included in the starter signal circuit?
What is "NE"?
What could be wrong with the CPS if all of the pickup coil resistances checked out okay per TSRM testing?
The ECU isnt the culprit itself since i just swapped with my friends 87 (mine is 88) and it did the same thing, still no spark.

What is considered an acceptable resistance between the negative terminal and the ground points? Im seeing resistances around 9-12 ohms between the grounds on the motor and head and the - terminal itself. There is no resistance between the -post and the -cable connector.

 

[xarewhyayen]

whoever figures out my problem today gets 150 bucks. Im desparate to get this car started today my boss is on my ass to get my car outta there.

 

[tookwik4u89]

Most of the time cps problems are in the wiring or connector. Check continuity in all 4 wires throughgh the connector, from about an inch out from the connector in both directions.

 

[gibby]

Did you get the cps back in place right? If you had it out??

 

[xarewhyayen]

I checked the wires out and even wired up my own way, i soldered my own 4 wires on the connector and ran it to the ECU and soldered on there... still no go. And yes, i made sure to do the whole 1tdc deal with the notch and the hole lined up on the CPS. ( even if the timing was off, i would still get spark, just at the wrong time.) The problem here is no spark.


Anyone else?

 

[hottscennessey]

I know it sounds really stupid but I think you should try installing the CPS again.. part of how the TSRM explains it with seeing the valve lobe in the oil filler hole reallly screwed me up. I thought I had it installed correctly but I didn't.

I had the exact same codes when this happened to me, thats why It makes me think this. If you have nothing else to play with.. no other leads.. its worth a shot.

engine @ TDC, align pins, stick it in, start it up. Adjust w/ a timing light. bolt it down. Basically.

Good luck!

 

[xarewhyayen]

I tried installing the CPS again like 4 times. I have Empera here with me and we took out his cps and installed it in mine the same way he puts it in his. We align the mark on the crank to the 0 degree mark. I know its correct because after we put it in mine from his, we had to put his back in and we used the same method and he drove home just fine with it.

This is not a timing issue, its a no spark issue. Thanks for the input though man.... Next? im still here trying everything i can.... any input is appreciated.

 

[johnathan1]

It HAS to be something with the CPS wiring...Maybe test the ignitor? Check every wire, and clean every connector you can.

 

[xarewhyayen]

tested ignitor, rewired cps, swapped in a known working ignitor, connectors were cleaned.

 

[supramk3man]

i know you said something about the alarm system did the alarm go off at any time could it be that the system is locked from the alarm i had something kinda of like this happen and is the car five spee if so i might have a idea

 

[johnathan1]

The alarm system will only stop the starter from cranking, correct? And your starter is cranking...so i am guessing that isn't the problem.

My money is on the wiring to something somewhere being messed up. Test the starter circuit, as well as the ignition circuit...sorry, that's all the help I can offer w/out being there.

 

[supramk3man]

sorry i was reading over it and didnt' notice that it was cranking nm my thoughts good luck though