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1990 Mercury Cougar CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Mercury REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
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- 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Mercury Cougar car and truck
repair procedures including Mercury engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your Mercury Cougar automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
A/C & Cooling System Maintenance -> Ford Motor Co. -> 1990-2002 Ford Thunderbird & Mercury Cougar
Vehicle: 1990 Mercury Cougar LS 3.8 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
ANTI-LOCK BRAKES, FORD MOTOR CO. -> Cougar/Mark VII & Thunderbird -> SYSTEM SERVICE -> Bleeding System Using A Fully Charged Accumulator -> Brake Bleeding Less Pressure Bleeder -> Brake Bleeding w/Pressure Bleeder -> FRONT BRAKES -> HYDRAULIC RESERVOIR, CHECK & FILL -> REAR BRAKES -> SYSTEM BLEEDING -> SYSTEM DISCHARGE
Vehicle: 1990 Mercury Cougar LS 3.8 V6 GAS
SYSTEM DISCHARGE
Before servicing any system component which contains high pressure, it is mandatory that the hydraulic pressure in the system be completely discharged. To discharge the system, turn ignition switch to Off position, then pump brake pedal a minimum of 20 times, until an increase in pedal force is clearly felt.
SYSTEM BLEEDING
FRONT BRAKES
The front brakes can be bled in the conventional manner or with brake bleeder tool No. 104-00064 or equivalent, with or without the accumulator being charged.
Brake Bleeding Less Pressure Bleeder
- Remove dust cap from the righthand ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
Ford Motor Co. Passenger Cars -> Fuel Pressure Relief -> Except Aspire, Festiva, Focus, Fusion, Milan, 2003-06 Crown Victoria, Grand Marquis, Sable, Taurus & Town Car, 1991-96 Escort, 1988-96 Tracer, 1991-94 Capri, 1989-91 Probe & 2005-06 Mustang
Vehicle: 1990 Mercury Cougar LS 3.8 V6 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
When installing the fuel filter, ensure the flow arrow is facing in the proper direction...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 1990 Mercury Cougar LS 3.8 V6 GAS
Disassemble
Do not clamp driveshaft in jaws of a vice or a similar holding fixture.
- Place driveshaft on a suitable workbench.
- Mark positions of driveshaft components relative to driveshaft tube. This ensures all components are reassembled in same relationship to maintain correct balance.
- Index driveshaft and driveshaft components.
- Clamp U-Joint Tool in a vise.
- Remove snap rings.
- If bearing cup cannot be pressed all way out, remove it with vise grips.
- Remove driveshaft slip-yoke.
- Position driveshaft in U-Joint Tool.
- Press out a bearing cup.
- Rotate driveshaft 180 degrees.
- Press on...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Mercury Cougar LS 3.8 V6 GAS
- Disconnect battery ground cable.
- Disconnect wire harness attachments to alternator assembly.
- Loosen alternator pivot bolts. Remove adjustment arm bolt from alternator.
- Disengage alternator drive belt fr...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
Ford Motor Co. Cars -> Low Oil Level Warning Indicator ->
Vehicle: 1990 Mercury Cougar LS 3.8 V6 GAS
This system is used to indicate when the engine oil level is 11/2 quarts or more below the specified level. The lamp should light during engine starting. If the oil level is sufficient, the lamp will go off when the engine is operating. If the ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1990 Mercury Cougar XR-7 3.8 V6 GAS
Inlet
- Drain coolant into a suitable container.
- Loosen hose clamp connecting hose to heater core inlet tube.
- Loosen hose clamp connecting hose to engine.
- Remove hose from vehicle.
- Reverse procedure to...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Mercury Cougar AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Mercury Cougar LS 3.8 V6 GAS
- Rotate automatic tensioner away from belt.
- Remove old belt from pulleys.
- Install new belt over pulleys.
- Ensure all V-groo...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Mercury Cougar AUTOMOBILES
Component location diagrams for most 1990 Mercury Cougar cars and light trucks sold in the U.S. from 1990+.
 I/P Components Diagram for 1990 Mercury Cougar LS 3.8 V6 GASComponents on diagram: |
 Rear Of Engine Diagram for 1990 Mercury Cougar LS 3.8 V6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1990 Mercury Cougar AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Mercury Cougar cars and light trucks sold in the U.S.
 1990 Mercury Cougar XR-7 3.8 V6 GAS Wiring DiagramComponents on diagram: |
 1990 Mercury Cougar XR-7 3.8 V6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Mercury Cougar AUTOMOBILES
OEM TSB listings for most 1990 Mercury Cougar cars and light trucks sold in the U.S. from 1985+.
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Document: MERCON ATF IS BEING REPLACED BY MERCON V AS A SERVICE FLUID FOR SOME MANUAL TRANSMISSIONS Vehicle: 1990 Mercury Cougar XR-7 3.8 V6 GAS Auto Systems: |
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Document: MERCON ATF IS BRING REPLACED BY MERCON V ATF AS A SERVICE FLUID Vehicle: 1990 Mercury Cougar XR-7 3.8 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Mercury Cougar AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Mercury Cougar 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 Cougar 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 Cougar 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 Cougar 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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