1978 Dodge Diplomat Auto
Unverified
All photo credits
- Photo: 1981 Dodge Diplomat coupe, front right by Mr.choppers, CC BY-SA 3.0, via Wikimedia Commons
- Photo: 1980-1983 Dodge Diplomat 1 by IFCAR, Public domain, via Wikimedia Commons
- Photo: 1980-1983 Dodge Diplomat 2 by IFCAR, Public domain, via Wikimedia Commons
- Photo: Brown Diplomat Right Side by Ryanandlenny, CC BY 3.0, via Wikimedia Commons
- Photo: 1981 Dodge Diplomat coupe, rear right by Mr.choppers, CC BY-SA 3.0, via Wikimedia Commons
The 1978 Dodge Diplomat Auto is a 3.7-liter inline-6 with a 3-speed automatic and rear-wheel drive.
The Diplomat measures 206.1 inches long on a 112.7-inch wheelbase.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Sedan |
| Powertrain | Gas |
| Engine | |
| Engine Type | 3.7L Inline-6 OHV |
| Displacement | 3.7 L |
| Valvetrain | OHV, 2 valves/cylinder |
| Injection Type | 1-barrel carburetor |
| Drivetrain | |
| Drive Type | RWD |
| Transmission | |
| Transmission | 3-speed automatic |
| Dimensions & Weight | |
| Length | 206.1 in |
| Height | 55.1 in |
| Wheelbase | 112.7 in |
Similar cars
Rivals to the 1978 Dodge Diplomat Auto with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
Not crash-tested by NHTSA for this model year.
Recalls
3 recalls on file with NHTSA for the 1978 Dodge DIPLOMAT. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.
Dec 28, 1977 · LATCHES/LOCKS/LINKAGES:HOOD:LATCH
ON THE INVOLVED VEHICLES, THE HOOD SECONDARY CATCH SYSTEM MAY BE MISALIGNED WHICH MAY CAUSE THE SECONDARY CATCH TO MALFUNCTION. CONSEQUENTLY, THE HOOD MAY NOT BE SECURELY LATCHED.
Remedy: DEALER WILL ADJUST THE CATCH SYSTEM TO FULLY SECURE THE HOOD, WITHOUT CHARGE.
NHTSA campaign 77V240000
Nov 28, 1977 · STEERING: STEERING WHEEL/HANDLE BAR
THE COLUMNS MAY CONTAIN STEERING SHAFTS IN WHICH THE STEERING COLUMN COUPLING ROLL PIN RETAINING NOTCH WAS MACHINED TOO DEEP. THIS MAY CAUSE THE STEERING WHEEL SHAFT TO BECOME DISENGAGED FROM THE REST OF THE STEERING ASSEMBLY.
Remedy: DEALER WILL INSTALL A COTTER PIN THROUGH THE ROLL PIN TO ENSURE RETENTION, AT NO COST TO OWNER.
NHTSA campaign 77V211000
Oct 25, 1977 · SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
ON THE INVOLVED VEHICLES, DAMAGE TO THE FRONT WHEEL BRAKE HYDRAULIC SYSTEM COULD OCCUR DUE TO FRONT WHEEL BRAKE LINE TUBE CORROSION. FRONT WHEEL BRAKE HOSES MAY BECOME BRITTLE AND CRACK DUE TO PROLONGED OPERATION IN COLD TEMPERATURES.
Remedy: THE DEALER WILL REPLACE BOTH FRONT HOSES IF FOUND NECESSARY AND IN ADDITION, WILL INSTALL A PLASTIC SHIELD BETWEEN THE BATTERY THERMO-GUARD AND THE TUBES TO PREVENT CORROSION.
NHTSA campaign 77V188000
Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 1978 DODGE DIPLOMAT. US-market vehicles only; data cached for up to 7 days.