Section 4 · Pages 149–192 (44 pages)

Fuel Control System

From the 1988 GMC Light Duty Truck Fuel, Emissions and Driveability Manual

The throttle body injection fuel system: the TBI model 220 used on V6 and V8 engines and the TBI model 700 used on the L4 engine. It covers the fuel pressure relief procedure and fuel system pressure test, controlled idle speed and minimum idle air rate checks, component service of the fuel meter cover, injectors, fuel meter body, throttle position sensor, IAC valve and throttle body, and the fuel pump, fuel pump relay and fuel module.

Read this section free, starting at page 149

What this section covers

  • Fuel pressure relief and pressure test
  • Idle speed and minimum idle air checks
  • TBI 220 component service
  • TBI 700 component service
  • Idle air control valve
  • Fuel pump, relay and fuel module
Year
1988
Make
GMC
Vehicle
C/K Trucks, G Vans, Light Duty Trucks, M Vans (Astro/Safari), P Forward Control, R/V Trucks, S/T Trucks, Trucks
Type
Fuel & Emissions, Supplement
Models
R/V, G, P, S/T, M, C/K 10–30
Publication
X-8836
Pages
290

What’s inside

Front matter

  1. Foreword and ContentsForeword listing the engines covered and the service manuals this book supplements, metric fastener cautions, the action symbols used in the procedures, and the table of contents.pp. 3–6

Manual

  1. 1General Informationpp. 7–24
  2. 2Driveability Symptomspp. 25–30
  3. 3Computer Command Control (Using Scan Tool Diagnosis)pp. 31–148
  4. 4Fuel Control Systempp. 149–192
  5. 5Evaporative Emission Control System (EECS)pp. 193–198
  6. 6Ignition System/ESTpp. 199–206
  7. 7Electronic Spark Control (ESC)pp. 207–210
  8. 8Air Management Systempp. 211–220
  9. 9Exhaust Gas Recirculation (EGR) Systempp. 221–230
  10. 10Automatic and Manual Transmission Controlspp. 231–240
  11. 11Positive Crankcase Ventilation (PCV)pp. 241–244
  12. 12Thermostatic Air Cleaner (THERMAC)pp. 245–250
  13. 13Special Toolspp. 251–258
  14. 14Abbreviations and Glossary of Termspp. 259–262
  15. 15Computer Command Control (Without Using Scan Tool Diagnosis)pp. 263–290

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