1990 Plymouth Horizon Service and Repair Manual

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Factory-Grade Data

1990 Plymouth Horizon 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.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

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

Trims covered

  • Base Hatchback 4-Door

Engines covered

  • 2.2L 135Cu. In. 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 Plymouth Horizon Recalls & Complaints

NHTSA #89V23700027/12/1989Component: ENGINE AND ENGINE COOLING:ENGINE

THE ENGINE VALVE COVER GASKET MAY DISLOCATE AND ALLOW AN ENGINE OIL LEAK AT THE GASKET.

Consequence

THE LEAKAGE OF OIL IN THE ENGINE COMPARTMENT COULD CAUSEA FIRE.

Remedy

REPLACE GASKET COVER WITH REVISED COVER, AND RTV SEALANT WILL BE APPLIED IN PLACE OF A GASKET.

NHTSA #08E03300014/04/2008Component: SUSPENSION

FEDERAL MOGUL IS RECALLING 6,903 AFTERMARKET BALL JOINT ASSEMBLIES SHIPPED BETWEEN NOVEMBER 9, 2007 AND MARCH 26, 2008, WHICH MAY HAVE BEEN PACKAGED WITH INCORRECT NUTS. THE PART NUMBERS PACKAGED WIT

Consequence

THE NUTS INCLUDED IN THE PACKAGING FOR THESE BALL JOINT ASSEMBLIES ARE MISSING THE INTENDED PREVAILI

Remedy

FEDERAL MOGUL WILL NOTIFY OWNERS AND REPLACE THE PARTS FREE OF CHARGE. THE RECALL BEGAN ON MAY 22,

TSB #621898

AUTOMATIC TRANSMISSION FLUID USAGE ATF+4. *TT *MJ

TSB #620059

SUBJECT REGARDING AIRBAG / CLOCK SPRING SERVICE FOR VARIOUS MODELS INCLUDING 2002 MODEL YEAR JEEP LIBERTY. *TT

TSB #618049

SUBJECT REGARDING WIRE SPLICE REPAIRS. *SB

TSB #615688

SUBJECT REGARDING CHILD SEAT TETHER ANCHORS. *TT

TSB #6092304

SUBJECT REGARDING NON-DEPLOYED AIRBAG HANDLING PROCEDURES. *TT

TSB #612160

SUBJECT ON THE CHILD SEAT TETHER ANCHORS. *MJS

TSB #610635

SUBJECT REGARDING CHILD SEAT TETHER ANCHORS. *TT

TSB #609995

THIS BULLETIN PROVIDES A REVISED WIRE SPLICE PROCEDURE AND RELATED PARTS. *TT

Showing the 8 most recent of 11 technical service bulletins on file with NHTSA.

19980121Component: STRUCTURE:BODY:HOOD

WELDING ON STRUT HOUSING SEPARATED, HOOD DOESN'T CLOSE PROPERLY. *AK

19951121Component: TIRES

CONSUMER PURCHASE TIRE FROM SEARS ITS A MICHELIN TIRE WAS DRIVING AND THE TIRE BLEW OUT DROVE INTO A GAS STATION TO PUT AIR IN TIRE IT BLEW OUT AGAIN . TT

19950524Component: SEAT BELTS:FRONT:BUCKLE ASSEMBLY

DRIVER'S SHOULDER/LAP BELT BUCKLE INOPERATIVE, DUE TO PUSH BUTTON BECOMING BRITTLE AND PIECES HAVE FALLEN INSIDE. TT

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