1989 ford ranger 2.9 4x4 fusible link location between ecc and ecm

[Stevenanderson]

I was experiencing no start no crank removed sprout and got started. Still dont have ignition. I am looking to diagnosis fusible link between ecc relay and ecm.

Any help with location would be beneficiary.

Attach wiring

 

[franklin2]

On my 86 the relay was mounted on the pass side inner fender up high. Beside it was the fuel pump relay. Both of these got power not too far away from the starter relay itself.

 

[franklin2]

Here's a picture. I see soon after your model they went to a underhood power distribution box. Even then the fuel pump relay and the EEC relay are sort of in the same place under a cover, but are fed with large fuses instead of fusible links.

 

[Stevenanderson]

thanks Franklin

 

[Stevenanderson]

The issue came out of nowhere, I have the fuses and they all check out. The truck is running without the Sprout which disconnects the ECM, i believe for timing. I really appreciate the information. Once the sprout goes back in the engine shuts off. I was trying to diagnose the connection between the eec and ecm. Where to start looking?

 

[franklin2]

The ECM is working, since it's firing the fuel injectors. It gets that info from the distributor. It takes that raw info to fire the injectors, calculate engine rpm, and then it modifies the timing on that info and sends it back to the distributor on the spout. That is how it varies the engine timing.

With the spout disconnected, you timing is locked at whatever the distributor is set at. On most all EECIV systems the factory sets the distributor at 10 BTDC with the spout disconnected. Then when you reconnect the computer takes over from there.

I would be curious where your timing is with a timing light and the spout disconnected. If it's not at 10 I would set it there and see what happens. Most of the time you have to clean off the pulley so you can see the marks. I like to clean it off from underneath, take white-out and mark 10 BTDC and then I can easily see that white mark with the timing light when I get the engine started.

 

[Stevenanderson]

Thanks Franklin,
I was able to accomplish all that. The issue came about instantly truck has always ran great. Will all the original equipment. No start cranking with not tachometer moving. After being a dummy DIYer changing parts which I returned took out the sprout fired right up.
Just trying to figure out where to start if I have fusible links because the fuses check out with multimeter. This truck has been in the family the entire time no problem and suddenly a blown fuse or ecm. Find out the best way to diagnose

 

[19Walt93]

The connector you're removing is called the spout (SPark OUTput) connector, and you are correct that it removes the electronic advance. If it's running and you plug in the spout, what happens? Have you checked the codes? If the EEC power relay or it's wiring had problems it wouldn't start at all.

 

[Stevenanderson]

Thanks Walt, insert the sprout, truck shuts off. Never had any wiring issues since truck was brand new. Fortunately I installed a push button start because my ignition went out after removing the sprout. After researching I thought a fusible link to begin, but I have no clue. Truck is running but I can easily notice the difference without the sprout installed. It’s running at lower rpm idling without the sprout.
I have the tools to diagnose and fix just stumped.
I can’t thank the community here enough for the support.

 

[Stevenanderson]

I am going to ride to Advanced and see if I can get a code reading. Couldn’t do that before since it wasn’t moving.

 

[Northidahotrailblazer]

could of the ignition module on the back of the distributor went bad? That would control timing to the ECM....

 

[Stevenanderson]

First thing I did after diagnosis was put in a new distributor with tpi, Nothing, after removing the sprout it running and I put everything original back in, distributor and coil and it’s runs. Just can’t realize the original source that removing sprout ECM would allow it to run.

 

[19Walt93]

Sounds like a poor connection somewhere. Ford's ignition back then was TFI (thick film integrated) ignition. TPI was GM's tuned port induction. Please srop calling the connector a sprout, you're killing me.

 

[franklin2]

Do you have another TFI module laying around? The one you are using is a new one and you still have the old one? I would swap the TFI module out. If you are running a new TFI module, it could have failed. You can't seem to buy anything but junk at the store.