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1990 Mercury Topaz CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Mercury REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
A/C & Cooling System Maintenance -> Ford Motor Co. -> 1990-2002 Ford Escort,Tempo, ZX2 & Mercury Topaz & Tracer
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
DRUM BRAKES, FORD MOTOR CO. -> General Information -> SERVICE PRECAUTIONS
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
When working on or around brake assemblies, care must be taken to prevent breathing asbestos dust, as many manufacturers incorporate asbestos fibers in the production of brake linings. During routine service operations the amount of asbestos dust from brake lining wear is at a low level, due to a chemical break down during use and a few precautions will minimize exposure.Do not sand or grind brake linings unless suitable local exhaust ventilation equipment is used to prevent excessive asbestos exposure.
The brake shoe and lining assemblies should be replaced if the lining is ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
Ford Motor Co. Passenger Cars -> Component Locations -> 1988-94 Tempo & Topaz 2.3L Engine
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
Ref...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
If removing both righthand and lefthand driveshafts, install plugs T81P-1177B, or equivalent. Failure to do so may result in dislocating of differential side gears, requiring transaxle disassembly to align gears. Also, driveshaft removal and installation procedures are the same for manual and automatic transaxles except for the following: due to automatic transaxle case configuration, righthand driveshaft assembly must be removed first. Removal tool T81P-4026-A, or equivalent, is then inserted into transaxle to remove lefthand inner CV joint assembly. If only lefthand dri...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
- Disconnect battery ground cable.
- Disconnect wire harness attachments to integral alternator assembly. Pull connector straight out.
- Loosen alternator pivot bolt. Remove adjustment are bolt from alternator.
- Disengage alte...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
Ford Motor Co. Cars -> Low Coolant Lamp ->
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
The low coolant warning lamp should light whenever the coolant level in the coolant recovery bottle is 1/4 to 3/4 inch or more below the cold full mark. Raise coolant level in recovery bottle to the cold full mark to turn lamp off.
On models equipped with GEM module and low coolant level warning system, t...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
Lower
- Drain coolant into a suitable container.
- Loosen hose clamp connecting hose to radiator.
- Loosen hose clamp connecting hose to water pump inlet tube.
- Remove hose from vehicle.
- Reverse procedure...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Mercury Topaz AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Mercury Topaz 2.3 L4 GAS
- Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Mercury Topaz AUTOMOBILES
Component location diagrams for most 1990 Mercury Topaz cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 1990 Mercury Topaz AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Mercury Topaz cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Mercury Topaz AUTOMOBILES
OEM TSB listings for most 1990 Mercury Topaz cars and light trucks sold in the U.S. from 1985+.
Document: WHINING / BUZZING NOISE COMES THROUGH ENTERTAINMENT OR TWO-WAY RADIO SPEAKER Vehicle: 1990 Mercury Topaz 2.3 L4 GAS Symptoms: |
Document: FORD MOTOR COMPANY POSITION ON PROPYLENE GLYCOL-BASED ENGINE COOLANTS Vehicle: 1990 Mercury Topaz 2.3 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Mercury Topaz AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Mercury Topaz cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1990 Mercury Topaz cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1990 Mercury Topaz cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1990 Mercury Topaz cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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