1993 VOLKSWAGEN CORRADO Engine oil

A/C COMPRESSOR OIL CHECKING
Article Text (p. 21)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PM
2) Stop engine. Discharge refrigerant. See SERVICING
PRECAUTIONS. Measure the amount of oil drained/discharged into
refrigerant recovery/recycling equipment.
3) Remove compressor from vehicle. Drain compressor oil from
compressor drain plug and measure oil amount. Add this amount to
amount drained in step 2), to obtain total amount drained.
4) Fill compressor with total amount drained, using new oil.
If any major components of the system were also replaced, determine
the amount of additional oil needed. See COMPONENT REFRIGERANT OIL
CAPACITIES (ZEXEL ROTARY VANE & 6-CYLINDER) table for specified
amount.
COMPONENT REFRIGERANT OIL CAPACITIES (ZEXEL ROTARY VANE & 6-CYLINDER)ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄComponent Ounces
Condenser
Altima & Maxima ............................................... 2.5
NX, Pickup, Sentra & 300ZX ................................ 1.0-1.7
Evaporator
Altima & Maxima ............................................... 2.5
NX, Pickup, Sentra & 300ZX ................................ 1.5-2.5
Receiver-Drier
Altima & Maxima ............................................... 0.2
NX, Pickup, Sentra & 300ZX ................................ 0.5-0.8
Refrigerant Lines (1) .......................................... 1.0
(1) - Add only if a refrigerant oil leak is indicated.
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ 6-CYLINDER
Audi
1) The use of refrigerant recovery/recycling is recommended
by manufacturer. After refrigerant recovery process is completed, the
amount of compressor oil removed must be measured and the same amount
added to A/C system.
2) Add one ounce of refrigerant oil when replacing
accumulator. When replacing condenser, add amount drained from
condenser plus 1/3 ounce of refrigerant oil. When replacing
evaporator, add amount drained from evaporator plus 2/3 ounce of
refrigerant oil.
Nissan
1) Before checking and adjusting oil level, operate engine at
1200 RPM. Set controls at maximum cooling and high blower motor speed
for 10 minutes to return oil to compressor.
2) Stop engine. Discharge refrigerant. See SERVICING
PRECAUTIONS. Measure the amount of oil drained/discharged into
refrigerant recovery/recycling equipment.
3) Remove compressor from vehicle. Drain compressor oil from
compressor drain plug and measure oil amount. Add this amount to

A/C SYSTEM GENERAL DIAGNOSTIC PROCEDURES
Article Text
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:48PM
ARTICLE BEGINNING
1993 AIR CONDITIONING & HEAT
A/C General Diagnostic Procedures
Diagnosis is an important first step in A/C system servicing.
To save time and effort, systems should be carefully checked to
identify the causes of poor performance. By using the following
diagnostic charts, defective components or system problems can be
quickly located. To identify problems that are specific to one system,
refer to the repair section of this manual. The charts in this section
apply to all systems.
PREPARATION FOR TESTING
1) Attach Low and High pressure gauges.
2) Start engine and allow to warm up.
3) Set system to COOL and blower to HIGH.
4) Open car doors and hood.
5) Run engine at fast idle for 2-3 minutes.
AIR CONDITIONING SYSTEM PERFORMANCE CHECK
AIR CONDITIONING SYSTEM PERFORMANCE CHECK TABLEÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄPERFORM TESTS: SHOULD BE: IF:
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄTemperature Check Temperature Check Is:
* Switch to LOW blower.
* Close doors.
* Check outlet temperature. 35-45
ø F Too warm - Check
control lever
operation, heater
water valve, cooling
system and gauge readings.
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄPERFORM TESTS: SHOULD BE: IF:
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄVisual Check Visual Check Shows:
* Compressor Quiet with no leaks Noisy - Check belts,
oil level, seals,
gaskets, reed valves.
* Condenser Free of obstructions Blocked - Clean off.
Plugged - Flush or
replace.
* Receiver-Drier Dry and warm to touch Frosty - Check for
restriction, replace
desiccant.

A/C SYSTEM GENERAL SERVICING
Article Text (p. 7)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:48PM
Vigor). Use High-Side Adapter (J-25498).
(3) - On low pressure line (near battery on Integra; near
right rear of engine on Legend; near compressor on
Vigor).
(4) - On high pressure (discharge) hose/line.
(5) - On low pressure (suction) hose/line.
(6) - On high pressure line, between compressor and condenser.
(7) - On suction accumulator/drier.
(8) - On low and high pressure hoses, behind compressor.
(9) - On receiver/drier and low pressure hose (near
compressor).
(1)(0) - On compressor discharge hose and accumulator.
(1)(1) - On compressor discharge and suction ports.
(1)(2) - Front of condenser on right side.
(1)(3) - Towards rear of compressor.ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ REFRIGERANT RECOVERY/RECYCLING
Refrigerant recovery/recycling equipment is used to remove
refrigerant from vehicle's A/C system without polluting atmosphere. To
remove and recycle refrigerant, connect the recovery/recycling system
and follow instructions provided with the system.
The removed refrigerant is filtered, dried and stored in a
tank within the recovery/recycling system until it is ready to be
pumped back into the vehicle's A/C system. With refrigerant stored in
the recovery/recycling system, A/C system can be opened without
polluting atmosphere.
NOTE: Separate sets of hoses, gauges and refrigerant
recovery/recycling equipment MUST be used for R-12 and
R-134a based systems. DO NOT mix R-12 and R-134a
refrigerants, as their refrigerant oils and desiccants are
not compatible. On systems with R-134a refrigerant, use
Polyalkylene Glycol (PAG) wax-free refrigerant oil.
END OF ARTICLE

A/C-HEATER SYSTEM - MANUAL
Article Text (p. 4)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:49PM
too low. This protects compressor if not enough refrigerant is in
system. Low-pressure cut-out switch shuts compressor off at about 29
psi (2.0 kg/cmý).
THERMOSWITCH
Thermoswitch shuts compressor off if coolant temperature is
greater than 248
øF (120øC).
ADJUSTMENTS
AIR DISTRIBUTION CONTROL
1) Move air distribution control knob to defrost position.
Connect 3-foot long control cable to footwell/defrost flap lever. Push
flap lever toward cable and secure cable sheath with retainer clip.
2) Move air distribution control knob to panel (vent)
position. Connect 2-foot long control cable to center flap lever. Push
flap lever away from cable and secure cable sheath with retainer clip.
TEMPERATURE CONTROL
Move temperature knob to full cool position. Connect
temperature control cable (Blue sheath) to temperature flap lever.
Push flap lever away from cable and secure cable sheath with retainer
clip.
TROUBLE SHOOTING
NO COOLING
1) Ensure blower fan motor operates in all 4 speeds. Ensure
air duct closes off outside air and heater water valve is closed.
Clean condenser.
2) Inspect receiver-drier pressure seal. If seal is good, go
to step 3). If seal is broken, replace seal. Evacuate and recharge
system. If system cools properly, testing is complete. If system does
not cool, connect pressure gauges.
3) Adjust engine speed to 2500 RPM. Set controls for maximum
cooling and high fan. Insert thermometer in left air duct and close
all other ducts. With vehicle in shade, close windows and doors and
connect pressure gauges. Operate system for 10 minutes.
4) If fan does not operate, replace pressure switch. Ensure
system is okay. If fan does come on, turn engine off, and check for
condenser obstructions and blocked airflow.
5) Turn air conditioner on and off with temperature control.
Ensure compressor clutch engages. Push lever to extreme right position
and back again. A click should be heard from compressor clutch. If a
click is not heard, check for voltage at clutch coil wire with switch
on. If voltage is present, replace clutch coil. If voltage is not
present, check wiring or replace thermostatic switch.
6) If compressor clutch operates, check gauge readings. If

A/C-HEATER SYSTEM - MANUAL
Article Text (p. 6)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:49PM
connect pressure gauges. Operate system for 10 minutes.
3) Check for cool air from left duct. Low pressure gauge
should read more than 16 psi (1.1 kg/cmý). If low pressure gauge
reading is incorrect, place hands around expansion valve to warm
valve. If pressure rises, moisture is present in system. Discharge A/C
system using approved refrigerant recovery/recycling equipment.
Evacuate and recharge system. If pressure does not rise, go to next
step.
4) Check temperature on thermometer when thermostatic switch
turns compressor off. If temperature is 39
øF (4øC), system is okay. If
temperature is lower than 39
øF (4øC), ensure capillary tube installed
length is 13" (330 mm). If capillary tube installation is correct,
replace thermostatic switch.
TESTING
A/C SYSTEM PERFORMANCE
1) Park vehicle out of direct sunlight. Start engine and
operate engine at 2500 RPM. Set A/C controls to outside air, panel
(vent) mode, full cold, and A/C button on.
2) Set blower/fan on high speed and open windows. Operate
system for 6-7 minutes to allow system to stabilize. Insert
thermometer in center vent, and measure temperature. Temperature at
center vent must be 19-40
øF (-7 to 4øC) at center vent, with high side
and low side pressures within specification. See SPECIFICATIONS table
at beginning of article.
AMBIENT TEMPERATURE SWITCH
1) Remove air intake grille from right side cowl. Remove
switch from panel on right side of tray area. Place switch in freezer.
2) Using a DVOM, check switch resistance. Switch resistance
must be infinite (no continuity) below 30
øF (-1øC). Allow switch to
warm above 45
øF (7øC). Switch resistance must be zero ohms
(continuity). Replace switch if necessary.
COMPRESSOR CLUTCH COIL
Disconnect compressor clutch harness connector. Check
resistance between clutch connector terminals. Resistance reading
should be 3.6 ohms. If resistance reading is not as specified, replace
clutch coil.
DUAL-PRESSURE SWITCH
High-Pressure Cut-Out Switch
Locate dual-pressure switch on refrigerant line (right strut
tower). Switch is identified by its 4 wires. Ensure switch opens at
464 psi (32 kg/cm
ý). Ensure switch closes at 348 psi (24 kg/cmý).
NOTE: Dual-pressure switch may be removed without discharging

AA - USING THIS SECTION (GENERAL HELP INFORMATION)
Article Text (p. 3)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:49PM
* Replacement intervals.
* Belt adjustment.
* Engine Compression.
* Valve clearance.
* Valve Arrangement.
* Ignition coil specifications.
* High tension wire resistance.
* Spark plug type and gap.
* Firing order.
* Ignition timing.
* Fuel pump performance and injector resistance specifications
* Slow and fast idle speed and mixture specifications.
* Carbon monoxide (CO) level specifications.
* Throttle position sensor/switch specifications.
C - SPECIFICATIONS
This is a collection of quick-reference type specifications.
This article is helpful when you are familiar with proper adjustment
procedures and only need specifications. Included in this section are:
* Battery specifications.
* Fluid capacities.
* Replacement intervals.
* Belt adjustment.
* Engine Compression.
* Valve clearance.
* Valve Arrangement.
* Ignition coil specifications.
* High tension wire resistance.
* Spark plug type and gap.
* Firing order.
* Ignition timing.
* Fuel pump performance and injector resistance specifications
* Slow and fast idle speed and mixture specifications.
* Carbon monoxide (CO) level specifications.
* Throttle position sensor/switch specifications.
D - ADJUSTMENTS
This article contains the information that use to be included
in the TUNE-UP section. Checking and adjusting valves, spark plugs,
spark plug wires, base ignition timing and idle speed are found in
this section. Use this article for routine maintenance. Also, if you
have a driveability problem, ensure all on-vehicle adjustments are
correct before proceeding with any diagnosis.
E - THEORY/OPERATION

AA - USING THIS SECTION (GENERAL HELP INFORMATION)
Article Text (p. 6)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:49PM
1) If no self-diagnostics available, or no trouble codes
present, identify symptom.
2) See trouble shooting procedure to repair complaint. See H
- TESTS W/O CODES
TEST SYSTEM
1) Perform necessary systems and component tests. See I -
SYS/COMP TESTS.
2) Verify that complaint is repaired.
SAFETY PRECAUTIONS
* Always refer to Engine Tune-Up Decal in engine compartment before
performing tune-up. If manual and decal differ, always use decal
specifications.
* DO NOT allow or create a condition of misfire in more than one
cylinder for an extended period of time. Damage to converter may
occur due to loading converter with unburned air/fuel mixture.
* Always turn ignition off and disconnect negative battery cable
BEFORE disconnecting or connecting computer or other electrical
components.
* DO NOT drop or shock electrical components such as computer,
airflow meter, etc.
* DO NOT use fuel system cleaning compounds that are not
recommended by the manufacturer. Damage to gaskets, diaphragm
materials and catalytic converter may result.
* Before performing a compression test or cranking engine using a
remote starter switch, disconnect coil wire from distributor and
secure it to a good engine ground, or disable ignition.
* Before disconnecting any fuel system component, ensure fuel
system pressure is released.
* Use a shop towel to absorb any spilled fuel to prevent fire.
* DO NOT create sparks or have an open flame near battery.
* If any EFI components such as hoses or clamps are replaces,
ensure they are replaced with components designed for EFI use.
* Always reassemble throttle body components with new gaskets, "O"
rings and seals.
* If equipped with an inertia switch, DO NOT reset switch until
fuel system has been inspected for leaks.
* Wear safety goggles when drilling or grinding.
* Wear proper clothing which protects against chemicals and other
hazards.
END OF ARTICLE

C - SPECIFICATIONS
Article Text
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
ARTICLE BEGINNING
1993 ENGINE PERFORMANCE
Service & Adjustment Specifications
Corrado SLC
INTRODUCTION
Use this article to quickly find specifications related to
servicing and on-vehicle adjustments. This is a quick-reference
article to use when you are familiar with an adjustment procedure and
only need a specification.
CAPACITIES
BATTERY SPECIFICATIONSÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄApplication Amp Hr. Rating
Corrado SLC ...................................... 63
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄFLUID CAPACITIES
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄApplication Quantity
Auto. Trans. (Dexron-II)
Dry Fill ...................................... (1)
Refill (Oil Change) ........................... (1)
Cooling System (Includes Heater) .... 9.1 Qts. (8.6L)
Crankcase (Includes Filter) ......... 6.3 Qts. (6.0L)
Man. Transaxle (SAE 75-80/API
GL-4 Or SAE 75W-90, G50
Synthetic Gear Oil) ............... 2.1 Qts. (2.0L)
(1) - Information is not available from manufacturer.
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ QUICK-SERVICE
SERVICE INTERVALS & SPECIFICATIONS
REPLACEMENT INTERVALS
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄComponent Miles
Air Filter ................................... 30,000
Coolant ...................................... 30,000
Fuel Filter (1) .............................. 15,000
Oil & Filter ................................... 7500