Yo Rich,
Welcome to the Zone with your fine looking 85!
Check Vehicle Identification Number (VIN) for 80-96 Model Year &
Engine Type by NHTSA via vpic @
https://vpic.nhtsa.dot.gov/decoder/?IsExport=False
Besides the usual visual, driveability and leak checks, look for:
Engine Oil level: If the oil level is low, chances are the engine uses oil or leaks. Beware of water in the oil (there is probably a cracked block or bad head gasket), or thin, dirty oil with a distinct gasoline smell (this may indicate internal engine problems).
I suggest checking and replacing all fluids if maintenance records aren't provided by seller.
See 1985 Lubrication Specs @
http://www.garysgaragemahal.com/lubricant-specifications.html
by Ford via Gary
Look for leaks after engine has cooled down, esp overnight.
Pull the transmission dipstick out when the engine is running at normal operating temp. The level should read FULL.
For tge C6 automatic transmission, if equipped, , look for leaks around pan from (front) Pump seal. Dark brown or black fluid that has distinct burnt odor, indicates a transmission in need of repair or overhaul.
Odor may indicate overheating condition, clutch disc or band failure. Use an absorbent white facial tissue and wipe the fluid level indicator. Examine the stain for evidence of solid particles and for engine coolant signs (gum or varnish on fluid level indicator).
If particles are present in the fluid or there is evidence of engine coolant or water, the transmission pan must be removed for further inspection.
Here are:
1985 Bronco Dealer Brochure via Gary @
1985 Bronco - Gary's Garagemahal (the Bullnose bible)
️➡1985 Electrical & Vacuum Troubleshooting Manual (partial) via Gary @
1985 EVTM - Gary's Garagemahal (the Bullnose bible)
SUGGEST YOU PRINT THIS OUT.
1985 Bronco/F Series Specifications by Gary @
http://www.garysgaragemahal.com/axle-ratios.htm
1985-1986 Fuel System Adjustments by Gary @
1985-1986 Fuel System Adjustments - Gary's Garagemahal (the Bullnose bible)
80-86 Bronco Differences by Gary @
1980 - 86 Ford Trucks - Gary's Garagemahal (the Bullnose bible)
Fasteners & Illustrations by Gary @
Ford 1980-86 Pickup Fasteners - Gary's Garagemahal (the Bullnose bible)
Free registration for Technical Service Bulletins, (80 through 96), same as by Ford @
BBB Industries- Premium Alternators, Starters, Power Steering Products | TSB's & Wiring Diagrams
GOOD FORTUNE WITH YOUR 85!
Al