ChryslerConquest1988Overview/chrysler/conquest/1988/base/

1988 Chrysler Conquest

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1988 Conquest.

Transmission Automatic 4-spd

The 1988 Chrysler Conquest, equipped with a 4-speed automatic transmission, delivers EPA-rated fuel economy of 16 mpg city, 22 mpg highway, and 18 mpg combined—a figure that reflects its performance-oriented nature—and requires 4 quarts of oil with filter using 15W-40, 10W-30, or 5W-30 viscosity grades for service intervals; in terms of factory-recorded reliability, this model year stands out with zero recalls and a remarkably low three total owner complaints on record, with the top reported concern centered on vehicle speed control, suggesting that while minor drivability issues existed, the 1988 Conquest avoided the systemic problems that would affect other model years within this nameplate's production run.

Model year198919881987

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity4 qt w/ filterOEM · verified
Engine oil type15W-40 / 10W-30 / 5W-30OEM · verified
EPA fuel economy16/22/18 mpgEPA · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined16 / 22 / 18 mpg
DrivetrainRear-Wheel Drive
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 4 qt w/ filter of 15W-40 / 10W-30 / 5W-30 engine oil, GL-5 · 80W-90 · 85W-90 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear OilGL-5 · 80W-90 · 85W-90
Differential Gear Oil Capacity2.5 Pints
Engine CoolantETHYLENE GLYCOL
Engine Oil15W-40 · 10W-30 · 5W-30
Engine Oil Capacity4 qt w/ filter
Power Steering FluidUSE MOPAR PART NO. 4318055 OR EQUIVALENT

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 3,000 mi; spark plugs every 30,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 3,000 miEngine Oil (drain & refill)
Every 6,000 miEngine Oil Filter (replace)
Every 7,500 miBrake Hydraulic System (inspect fluid level) · Power Steering System (inspect)
Every 15,000 miBrake Line (inspect) · Brake Linings (inspect) · Engine Valves (inspect valve lash) · Exhaust System (Complete) (inspect)
Every 30,000 miAccessory Drive Belt (inspect) · Differential (inspect fluid level) · Drive Axle Assembly (drain & refill) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Spark Plugs (replace)
Every 50,000 miEngine Coolant System Hoses (inspect) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Filter (replace) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect)
Every 60,000 miAir Intake Duct (inspect) · Fuel Evaporative Emission Control System (inspect) · PCV System (inspect) · Spark Plug Wires (inspect) · Turbocharger Oil Line (inspect) · Vacuum Line (inspect)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified
Tool requiredDRBIII scan tool (dealer / locksmith)
WhyTransmitter codes are written into the receiver in the passenger door module
Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified
When neededAfter Sentry Key Immobilizer Module (SKIM) replacement
Tool requiredDRBIII scan tool
Also requiredThe vehicle's four-digit PIN code

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 1988 Chrysler Conquest dominate in one area — the vehicle speed control, 1 of 3 reports (33%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the vehicle speed control pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

0
Open recalls
NHTSA campaigns
0
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
3
Owner complaints
0 involved a crash · 0 a fire

Owner complaints filed with NHTSA, by component

All 3 complaints on record, top 3 components.

Vehicle Speed Control1
Wheels1
Steering1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Conquest. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 1988 Conquest take?

4 qt w/ filter of ABOVE 20 degrees F: 30, ABOVE 10 degrees F: 15W-40, ABOVE 0 degrees F: 10W-30, BELOW 100 degrees F: 5W-30, per the factory manual.

Does the 1988 Conquest have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Conquest get?

EPA figures are 16 city / 22 highway / 18 combined mpg.