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Suggestions to Help a buyer purchase a 84 0r 85 Convertible
Inspecting a Classic Icon
The 1984-1985 Eldorado Convertible represents the end of an era. Because these cars were often purchased as "instant collectibles," many have low mileage—but low mileage does not always guarantee perfect condition. Rubber seals dry out, electronics age, and the unique convertible systems need regular exercise.
Your inspection should start with the body lines and paint. The ASC conversion was high quality, so gaps should be even. Look closely at the rear quarter windows and the header bar where the top latches; these are specific stress points for the convertible model.
Mechanically, listen to the HT4100 engine. It should be whisper-quiet. Any ticking or overheating issues are red flags. Finally, test every button. From the Twilight Sentinel to the power antenna, these cars were technological marvels in the 80s, and restoring those features can be time-consuming. Use this guide to separate a true "Survivor" from a car that just looks good from ten feet away.
A Checkpoint Guide
Buying a 1984-1985 Eldorado Convertible is an investment in American luxury history, but these forty-year-old classics require a sharp eye. Unlike the standard coupe, these vehicles underwent a complex conversion by ASC, meaning there are two layers of craftsmanship to inspect: the factory Cadillac engineering and the custom convertible reinforcements.
First, focus on the HT4100 V8 engine. While smooth, it requires a well-maintained cooling system to avoid costly failures. Always ask for service records. Next, inspect the convertible top mechanism. It should operate smoothly without binding; replacement parts for the scissor top assembly are rare and expensive.
Crucially, examine the underbody and frame. The ASC conversion added structural bracing to compensate for the roof removal; ensure these points are solid and free from rust. Purchasing the best example you can afford is always cheaper than restoring a neglected one. This guide highlights the critical areas where a little knowledge now saves a fortune later.
Factory commissioned Eldorado must have a 67 in VIN
This Sticker tells us about the car and how it left the Cadillac factory in Linden New Jersey ,
84 & 85 Optional Equipment RPO CODES
A80 Recliner Power Driver Seat
A81 Recliner Power Passenger Seat
AG2 Seat Adjuster – 6-Way Power, Passenger
AU4 Door Locks – Automatic
B48 Trunk Mat
B93 Door Edge Guards
C49 Defogger rear window (inc. LO2 & Heated out side mirrors 1985 only)
C97 Illuminated Entry System
D62 Mirrors – Auto Day/Night
D74 Mirrors – Illuminated Vanity
DD8 Mirror Automatic Day/Night Inside
UB8 Trumpet Horn
DG2 Mirrors Electrically powered outside chrome
K05 Engine Block Heater (Incl. w/ LF9)
L02 Generator 100 amp (inc with LT8 & C49
N08 Fuel Filler Door – Remote Locking
N37 Steering wheel Tilt and Telescopic
PG9 Wheels Spoked aluminum alloy (1985 only)
T80 Headlamp Control – Guidematic
NA5 Emissions label California (avail with NA5)
T82 Twilight Sentinel
UA1 Battery Heavy Duty
U02 Instrument Cluster – Digital
U83 Antenna Tri Band Included with UN8
UU6 Cassette Player w/ Equalizer
UN8 Universal Citizens Band Transceiver
V4C Cruise Control
V50 License Frame – Rear
V51 License Frames – Front and Rear
YL2 Paint Firemist Exterior color (only Autumn Maple or Corinthian Blue )
Visit our classified listing if your looking for a Eldorado Convertible
Looking for that special Eldorado convertible , we have a special listing page only for 1984 or 1985 Cadillac Eldorado ASC American Sunroof Company Factory commissioned cars