1986 Bronco (Mossberg)

[gatof16]

Meet my newest project, Mossberg. It's a 1986 Bronco 302 EFI AOD that I found in a field in central Oklahoma. It is covered in moss and fungus that is stained into the paint!! The previous owner said it had been sitting for 15 years. I'd say it housed about 20 critters during that time, two of which died in it. There were no keys and the steering wheel was locked 45 degrees off, so we decided to drill out the cylinder, which was a complete mess and ruined the collar. The fuel injection harness had been completely eaten, so I had to rebuild it. After replacing the collar shroud and installing the new key cylinder, I have been unable to get the engine to crank with the key.

If I jump the starter relay at the ignition post, it cranks. So I believe the relay is good. If I stick a continuity tester in the connector going to the neutral safety switch (NSS), the light comes on when I turn the key. If I jump the NSS connector, I do not get power up to the ignition post on the starter relay.

So my question is: does the R/Lt B wire that comes from the NSS and goes to the starter relay stop through anything? Is it a continuous wire? The wiring diagram seems to show it as a straight shot. Can't figure out why power isn't making it through. I'm afraid it might be chewed somewhere but I don't know how it's routed!

Thanks in advance for any help someone can provide!

[gatof16]

[ArdWrknTrk]

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[ArdWrknTrk]

Here's a link to the '86 EVTM start and run wiring.       http://www.garysgaragemahal.com/start--ignition.html

You'll see there's at least three connectors C121, C128 & C190.

I would look first at the clutch switch jumper (connector 190) up near the forward side of the fuse panel, since you have an automatic.
You can use a spare fuse as a makeshift jumper to test the rest of the wiring.

Note, that at the end of each EVTM chapter there are the pertinent troubleshooting steps laid out for you.

[Rembrant]

Now that's a project! I've brought a couple home now that looked like this. Takes a full day of work with the shop vac and a full bottle of degreaser before they're even fit enough to get inside to even try to start...lol.

[Gary Lewis]

Yes, Cory, that is a PROJECT!  It makes me tired just looking at it.  (Or, maybe it is the 2nd Moderna shot that's making me tired?)

I'm curious, what part of central OK?

[gatof16]

Hey Gary! It was near the town of Drumright...I live in Owasso, btw.

[Gary Lewis]

Drumright!  Was there on Wednesday.  Took Big Blue out to stretch his legs, and to get us out of the house.

How do you say Owasso?  My friends from Haskell, that live just west of Collinsville, say Owasso, with the emphasis on the O.

[Gary Lewis]

By the way, you aren't on our map: Bullnose Forum/Member's Map in the menu.  Happy to add you if you'd like.

[gatof16]

This info is perfect. Thanks Jim!

[gatof16]

Sure please add me! Depends on what mood I'm in, but I normally say O-wasso!

[Gary Lewis]

You are on the map.  Hope you like Italian food.  

So, are you originally from Owasso?  We've been here in 'took for about 12 years, but get over your way frequently for shopping, doctor's visits, etc.

[salans7]

Wow that Bronco is dirtier than both my 1986 and 1988 parts trucks combined.

[gatof16]

We've lived in Owasso since 2007. I grew up in East Tulsa and went to college at OU. After a few years in the active duty Air Force we came back to Owasso to settle in the suburbs! Hope to see you at your next Bullnose get together!

[Gary Lewis]

Thanks for your service.  

And, I certainly hope we get to meet.  

[gatof16]

Finally got back to working on Mossberg...thanks to Jim and the EVTM diagram the culprit ended up being this connector by the crossmember. Cleaned it well and added some bulb grease and now it cranks like a champ! Hopefully this weekend I can put the new tank w/ pump in after I clean out the lines. Then get it running!20210328_165450.jpg

[Gary Lewis]

Excellent!  Glad you found it and got it fixed.

[ArdWrknTrk]

I'm glad you were able to find the problem with the help of the documentation here.  

Looking forward then the update!

[Machspeed]

Just came about this post to find another local Okie among us....Wagoner here. Glad to have you and hope to meet you at one of our future get togethers!

Noted you were in the AF. Thank you for your service. I too was AF, in fact it is what brought me to Oklahoma. Last duty station was Altus AFB working on C5's, C141's and KC-135's.

As to your Bronco, you have  your hands full there, but you're in the right place to get it all worked out.

Glad to have with us!

[gatof16]

Thanks John! And thanks for your service too!

After cleaning out 500 pounds of mouse turds, rebuilding the EFI harness that was chewed up, replacing the steering column I butchered to unlock the cock-eyed steering wheel (including a new lock cylinder), troubleshooting wires and connectors related to the ignition system, and replacing the fuel tank/pump after blowing out all of the lines, I have a video to share. I apologize for it being 6 minutes long, but I wanted to capture this on video. Feel free to correct me if I say anything that's not right, I'm still learning!

https://youtu.be/YfvnPbkYzec