I'm having trouble finding circuit diagrams for this engine. My haynes manual only has electrical wiring diagrams for the 2.4 and 3.1. Also, does anyone know where the fuel pump relay and fuse are located?

 

You'll only find mediocre info in a Haynes or Chiltons manual. I bought a Bishko service manual on CD for my 96 Oldsmobile and I have paper copies of the Factory Service Manual and Chassis Service Manual for my 71. Unfortunately, Bishko only has a body manual for your car.

http://www.autobooksbishko.com/searc...e&category=All

 

Go to Alldata.com and buy a 1 year subscription for your car. Its not that expensive and you will have all of the factory data.

 

thanks, I ended up getting the sub at alldata. I can't figure this out. I disconnected the Ignition Control Module and since plugging it back in I have no voltage to the fuel pump relay and the crankshaft sensor. Looking at the connector I have voltage on pin P which should be the ICM's power supply...looking at the ICM itself there isn't a pin for that pin and it looks like it never had one there. How is this possible?

 

Why did you disconnect the ICM in the first place ? What was the original issue with the car ?

 

That should be a Pink & Black wire ? Is the wire there ?
The fuel pump relay looks like it is driven from the ECM

 

the initial problem was crank no start. at the time I had power to the fuel pump. I didn't have spark however from the coil packs. I pulled the ICM to replace it. Yes, the fuel pump relay is driven by the ecm on the green/whte wire. the pink/black whire goes to ign 12v and should always have voltage when key is on. Anyway, I can't figure out why since unplugging the ICM and plugging in a new one (even putting the old one back too) I cannot get power anywhere down the line that is fed by it, the Crank sensor, Cam sensor, fuel injectors, and the positive voltage posts off the top for each coil pack. Well, I can see why I just don't understand how it was working before when the power into the ICM is a pin on the connector that doesn't have a pin on the ICM. pics for reference attached, and yes I removed the insulator in the connector so I could see if the pin was just broken off.

Connector with 13 pins

type II ingition control module

 

Have you checked the ecm fuse ? That looks like it feeds the 12V to the ECM and the ICM In your picture, which contact is pin "P" ?

 

I've checked all fuses, but I can check them again. pin P is the farthest left (the one that doesn't exist on that ICM. the connector has 14 pins and the ICM has 13.

the only ICM I can find that has 14 pins is the Type I but what it had in it when we got it was clearly a Type II

 

And the purple/black wire is definitely in that position in the harness plug ?

 

I am getting ready to close up and go home so I might not look at this any more till later.

 

I'm not aware of any purple/black wire. the ICM power wire is is pink, or should be. its hard to tell with the age and dust and grime.

 

Sorry, I meant pink/black. Is it there ???

 

It is. I just solved the problem. further down the wiring harness I found a break in the wire. repaired and she's running once again.