1990 Volkswagen Cabriolet Service and Repair Manual

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Factory-Grade Data

1990 Volkswagen Cabriolet service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Bestseller Convertible 2-Door
  • Base Convertible 2-Door
  • Boutique Convertible 2-Door

Engines covered

  • 1.8L 1781CC l4 GAS SOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

1990 Volkswagen Cabriolet Recalls & Complaints

NHTSA #91V20100018/11/1991Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

A CRACK CAN DEVELOP IN THE FUEL TANK ADJACENT TO A SEAM WELD IN THE REAR OF THE TANK.

Consequence

FUEL CAN LEAK FROM THE CRACKED FUEL TANK WHICH COULDCATCH FIRE IN THE PRESENCE OF A SOURCE OF IGNITI

Remedy

CHECK VEHICLE WITH A SPECIALLY DESIGNED TOOL FOR THE PRESENCE OF A FUEL TANK CRACK, AND REPLACE FUEL

NHTSA #92V05800014/04/1992Component: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

THE FUEL HOSE ATTACHED TO THE FUEL DISTRIBUTION RAIL ON THE ENGINE MAY SHRINK BEYOND THE CLAMP FORCE OF THE FUEL HOSE CLAMPS, ALLOWING FUEL TO LEAK.

Consequence

FUEL LEAKAGE IN THE ENGINE COMPARTMENT CAN CAUSE AN UNDERHOOD FIRE IF THE FUEL COMES IN CONTACT WITH

Remedy

REPLACE THE FUEL HOSE ATTACHED TO THE FUEL RAIL AND INSTALL A NEW SPRING TYPE SELF-TIGHTENING CLAMP.

NHTSA #91V21500013/12/1991Component: AIR BAGS

THE AIRBAG HARNESS WIRE MAY HAVE BEEN IMPROPERLY ROUTED THROUGH AN OPENING IN THE DASHBOARD CROSSMEMBER AND COULD BE PINCHED AND CHAFED BETWEEN TWO PANELS EVENTUALLY RESULTING IN DAMAGE TO THE WIRE.

Consequence

IF THE AIRBAG HARNESS WIRE IS DAMAGED, THE PASSIVERESTRAINT SYSTEM WILL BECOME INOPERATIVE. THE DASH

Remedy

SECURE WIRE TO THE CROSSMEMBER WITH A CLIP.

NHTSA #91V16200011/09/1991Component: VEHICLE SPEED CONTROL

THE CENTER OF THE WATER SEPARATOR PANEL LOCATED IN THE ENGINE COMPARTMENT BETWEEN ENGINE AND FIREWALL COULD BEND IN THE EVENT SOMEONE LEANS ON IT DURING ENGINE MAINTENANCE, REPAIRS OR CHECKING OF FLUI

Consequence

INTERFERENCE WITH THE FREE MOVEMENT OF THE ACCELERATORLINKAGE COULD RESULT IN UNWANTED ACCELERATION

Remedy

INSTALL REINFORCEMENT BRACKET TO SECURE SEPARATOR PANEL.

TSB #10026848

VOLKSWAGEN: EXHAUST HEAT SHIELD, REPLACEMENT GUIDELINES. HEAT SHIELDS ARE TO BE INSPECTED AFTER COMPLETION O ANY TYPE OF REPAIR TO THE UNDERBODY (EXHAUST SYSTEM TRANSMISSION, ETC.), AND IF DAMAGED, REPLACED. *PE

TSB #621613

SUBJECT REGARDING LATCH SYSTEM LOWER ANCHORS AND TETHERS FOR CHILDREN, INSTALLING / RETROFITTING. *TT

20030915Component: AIR BAGS

CONSUMER NEVER RECEIVED A RECALL LETTER 91V215000 CONCERNING THE AIR BAGS. THE MANUFACTURER REFUSED TO SEND ANOTHER LETTER TO HAVE THE RECALL REPAIRS PERFORMED. THE AIR BAG DEFECT HAS OCCURRED. *A

20020409Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

CONSUMER RECEIVED RECALL 91V201000 FOR FUEL TANK ASSEMBLY. THE VEHICLE IS LEAKING GASOLINE. DEALERSHIP INSPECTED VEHICLE, AND PROBLEM WASN'T SOLVED. DEALERSHIP IS AWARE OF PROBLEM.*AK

20000508Component: AIR BAGS

AFTER A TURN, ARIBARG WARNINGS LIGHTS TURNED ON AND WONT TURN OFF. *AK

19990930Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

VAPORS APPEAR WHEN CONSUMER FILLS UP VEHICLE. ALSO, CONSUMER CAN ONLY GET A HALF TANK OF GAS WHEN FILLING UP VEHICLE DUE TO A SHORTAGE WITHIN THE TANK.

19990930Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

VAPORS APPEAR WHEN CONSUMER FILLS UP VEHICLE. ALSO, CONSUMER CAN ONLY GET A HALF TANK OF GAS WHEN FILLING UP VEHICLE DUE TO A SHORTAGE WITHIN THE TANK.

Showing the 5 most serious of 11 complaints filed with NHTSA.

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