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Yo Falcon,
E4OD Transmission Control Indicator Light (TCIL) is a LED with an overdrive on/off switch at end of the Transmission shifter stalk; flashing OD light is an indication of a transmission related trouble code in the Powertrain Control Module (PCM).
The transmission control switch is a momentary contact switch. When the switch is pressed, a signal is sent to the powertrain control module (PCM) (12A650). The powertrain control module then energizes the transmission control indicator lamp and the coast clutch solenoid, applying the coast clutch to provide engine braking and cancels fourth gear operation; does it cause the lamp to glow?
The TCIL indicates overdrive cancel mode activated (lamp on), electronic pressure control circuit shorted or monitored sensor failure (lamp flashing).

182485
182486


As Broncmom advised.

Try a Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19 @ Code Reader
The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test and greater than 180° F for the Key On Engine Running (KOER) Self-Test. Run it around to heat the engine up and shift thru all gears including Reverse. Make sure A/C is off and transmission is in Park (automatic); or in Neutral for a Manual & release clutch. Then turn off engine, all accessories/lights (close driver's door) , etc.

Do KOEO test First. Post Code(s) here according to KOEO & KOER.
A helper can assist you by counting the codes. Some use their smart phones to record them.

BEWARE OF FAN, BELTS, PULLEYS, HOT HOSES, IGNITION HIGH TENSION WIRES, AND ENGINE COMPONENTS

Or ask local mom and dad parts stores if they will test it for you.
Or purchase a coder reader such as Equus 3145 Innova OBD I Code Reader for Ford EEC IV Engines at Walmart & most parts stores.

"missing the two floor mount brackets that let rear seat fold forward can you order them? "
One of our Vendors , Jeff's Bronco Graveyard, a.k.a. "The Graveyard," has a classified section;
Bronco Graveyard Registry

For a YARD SEARCH on-line, I use;
Hollander Quality Replacement Parts | Find Used Auto Parts | Online Locator
A yard that uses Hollander Interchange can search other yards and have it shipped including some Canadian yards.
"...For over eighty years, Hollander has been making the best tool for fast, interchangeable part matches. The new Edition Hollander Interchange contains more interchangeable options than ever before.
The Hollander Interchange provides auto recyclers and auto collectors, rebuilders, and others with the easiest and most comprehensive solution for identifying interchangeable auto parts..." See their yard Directory @ Seller Directory | Used Auto Parts | Hollanderparts
Can select a certain part.
Your Search: 1991 >Ford > Bronco > Interior > Seat Rear > Alternate Seat Rear
 
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