91 Bronco cranks wont start

[westcobronco]

1991 bronco 5.8 L automatic transmission took it for a drive today battery light came on, dash charge gauge pegged, brought it back home turned it off a few minutes later turned it back on was running rough then just shut off.
I could smell burnt electrical wiring inside but I do not see any thing burned under the dash and will no longer runs although it does crank, I do not hear the fuel pump whine, I did run the diagnostic check on the fuel pump relay and EEC relays they all seem to be fine if I jump the fuel pump relay I then could hear the fuel pump prime is there a fusible link that I could have blown under the dash

 

[Tiha]

Someone else I am sure will chime in, but wasn't that one of the years for the ignition switch recall?

 

[miesk5]

Yo westcobronco,
Welcome!

Inspect Fusible Link G, etc.



View attachment 175180
View attachment 175181View attachment 175182


o
Troubleshoot a No Start Ford 4.9, 5.0, 5.8 @ Part 1 -How to Troubleshoot a No Start (Ford 4.9L, 5.0L, 5.8L).

Try a Self Test for Diagnostic Trouble Codes by my pal, BroncoJoe19 @ Code Reader.....
The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test
●
Here are the 1990 F Series/Bronco Pre-Delivery Shop & Electrical & Vacuum Troubleshooting Manuals (EVTM), Partial by member Kingfish999 in Google Drive (similar to your 91) @ 1990 Ford Truck service manuals - Google Drive
Slow scrolling for my slow Comcast Highest Cost Blast Internet..
Suggest you download the docs for faster scrolling and to use the page index.

1991 Bronco Dealer Brochure by Ford via via Dezo's Garage @

https://www.xr793.com/wp-content/uploads/2020/07/1991-Ford-Bronco.pdf

Haynes Red Manual for 80-95 Bronco & F Series @ Hanes guide 80-96 bko f series.pdf via member BroncMom
Al

 

[miesk5]

Yo westcobronco,
Welcome!

Inspect Fusible Link G, etc.
View attachment 22372
View attachment 22371
View attachment 22370
View attachment 175180
View attachment 175181View attachment 175182


o
Troubleshoot a No Start Ford 4.9, 5.0, 5.8 @ Part 1 -How to Troubleshoot a No Start (Ford 4.9L, 5.0L, 5.8L).

Try a Self Test for Diagnostic Trouble Codes by my pal, BroncoJoe19 @ Code Reader.....
The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test
●
Here are the 1990 F Series/Bronco Pre-Delivery Shop & Electrical & Vacuum Troubleshooting Manuals (EVTM), Partial by member Kingfish999 in Google Drive (similar to your 91) @ 1990 Ford Truck service manuals - Google Drive
Slow scrolling for my slow Comcast Highest Cost Blast Internet..
Suggest you download the docs for faster scrolling and to use the page index.

1991 Bronco Dealer Brochure by Ford via via Dezo's Garage @

https://www.xr793.com/wp-content/uploads/2020/07/1991-Ford-Bronco.pdf

Haynes Red Manual for 80-95 Bronco & F Series @ Hanes guide 80-96 bko f series.pdf via member BroncMom
Al

 

[BroncoJoe19]

miesk5's responses are so... right on.
I didn't read through it, but considering that your battery light came on before it stalled, I'd consider a blown alternator.
try giving that a smell. Perhaps disconnect it and see if she'll start.

Puling codes is a good place to start looking

 

[westcobronco]

Spent the day chasing wires nothing burned, got a rebuilt Alt from local rebuilder in Escondido Ca that I have been using for years, they checked my alternator and the regulator was over charging.

That burned electrical smell in my experience lingers, so I started getting close to areas under the dash I could barely smell it in the ECM so I pulled it and I could smell it inside, opened it up and sure enough 2 blue resistors are burned and black trails leading to them from the main center chip.

So now the question is. Where do I get one? I found a company online Flagship One and Car COmputer Exchange, neither have decent reviews.

Anybody recommend where I could find one?

Thanks

 

[westcobronco]

Yo westcobronco,
Welcome!

Lots of good stuff...Thank You.
I see you're in Coronado I grew up in Imperial Beach right down the strand from you. Live in Pauma Valley now North County Inland

 

[Motech]

A rebuilder in PA (877) 687-3267
A rebuilder in TX (866) 326-4227

 

[L\Bronco]

Spent the day chasing wires nothing burned, got a rebuilt Alt from local rebuilder in Escondido Ca that I have been using for years, they checked my alternator and the regulator was over charging.

That burned electrical smell in my experience lingers, so I started getting close to areas under the dash I could barely smell it in the ECM so I pulled it and I could smell it inside, opened it up and sure enough 2 blue resistors are burned and black trails leading to them from the main center chip.

So now the question is. Where do I get one? I found a company online Flagship One and Car COmputer Exchange, neither have decent reviews.

Anybody recommend where I could find one?

Thanks

Try Cardone.com, they have a list of retailers on their website and you can look up the part number yourself. Some are available through rock-auto and Amazon once you have the part number.
Hope that helps
Cheers

 

[Motech]

Good point about the part number. Use the one printed on the sticker of your original PCM.

 

[johnnyreb]

Spent the day chasing wires nothing burned, got a rebuilt Alt from local rebuilder in Escondido Ca that I have been using for years, they checked my alternator and the regulator was over charging.

That burned electrical smell in my experience lingers, so I started getting close to areas under the dash I could barely smell it in the ECM so I pulled it and I could smell it inside, opened it up and sure enough 2 blue resistors are burned and black trails leading to them from the main center chip.

So now the question is. Where do I get one? I found a company online Flagship One and Car COmputer Exchange, neither have decent reviews.

Anybody recommend where I could find one?

Thanks

Try Green Sales in Ohio-they have alot of old and late model stuff.

 

[johnnyreb]

Try Green Sales in Ohio-they have alot of old and late model stuff.

New old and late model parts they do have