Section 4 · Pages 255–300 (46 pages)

Fuel Control System (TBI 220 and 700)

From the 1991 GMC Light Duty Truck Fuel, Emissions and Driveability Manual

The throttle body injection fuel control system: TBI Model 220 on V6 and V8 engines and TBI Model 700 on the 2.5L four. It covers fuel pressure relief, the fuel system pressure test, controlled and minimum idle speed checks, and component service on the fuel meter cover, injectors, fuel meter body, throttle position sensor and idle air control valve.

Read this section free, starting at page 255

What this section covers

  • Fuel pressure relief procedure
  • Fuel system pressure test
  • Controlled and minimum idle speed checks
  • TBI 220 fuel meter cover, injector and meter body
  • Throttle position sensor
  • Idle air control valve
  • TBI 700 component service
Year
1991
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
C/K, R/V, P, G, S/T, M 10–30
Publication
X-9136
Pages
406

What’s inside

Fuel and emissions manual

  1. 1General Informationpp. 7–24
  2. 2Driveability Symptomspp. 25–44
  3. 3Computer Command Control (Scan Tool Diagnosis)pp. 45–254
  4. 4Fuel Control System (TBI 220 and 700)pp. 255–300
  5. 5Evaporative Emission Control System (EECS)pp. 301–308
  6. 6Ignition System and ESTpp. 309–318
  7. 7Electronic Spark Control (ESC)pp. 319–326
  8. 8Air Management Systempp. 327–336
  9. 9Exhaust Gas Recirculation (EGR) Systempp. 337–352
  10. 10Automatic and Manual Transmission Controlspp. 353–360
  11. 11Positive Crankcase Ventilation (PCV)pp. 361–366
  12. 12Thermostatic Air Cleaner (THERMAC)pp. 367–372
  13. 13Special Toolspp. 373–380
  14. 14Abbreviations and Glossary of Termspp. 381–384
  15. IndexAlphabetical index of subjects with section and page references.pp. 385–406

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