1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 1 Vehicle: Vacuum and Vapor Hose Diagrams Cruise Control Refer to Figs. 22 through 36 for vacuum hose routing schematics. Fig. 41 Vacuum hose routing. Models w/accumulator & check valve (models less accumulator and/or check valve similar) ig. 22 Vacuum hose routing. Custom Cruise III models w/accumulator & check valve (models less accumulator and/or check valve similar)
1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 2 Fig. 35 Vacuum hose routing. 1986---87 S/T Series w/4-151 engine Emission Systems Application Chart 1986 APPLICATION CHARTS Engine... 4-151 Application TBI Engine Code [1] E Figure No. 111 BPEGR, CC, CTS, EEC, ESC, EST, IAC, MAP, OC, OS, PCV, TAC, TCC, TPS, VSS Engine... V6-173 Application TBI Engine Code [1] X Figure No. 112 AIR, AIR-MGMT, CC, CTS, EEC, EGR, EGR-SOL, ESC, ESC-KS, EST, EVRV, IAC, MAP, OC, OSP-TVS, PCV, TAC, TCC, TPS, VSS Engine... V6-262 Application 4 Bbl., Exc. Calif. Engine Code [1] N AIR, CC, DEC-V, EEC, EFE, EGR, EGR-SOL, ESC, ESC-KS, OC, PCV, TAC Engine... V6-262 Application 4 Bbl., Calif. Engine Code [1] N AIR, C3, CC, CTS, DEC-V, EEC, EFE, EGR, EGR-SOL, ESC, ESC-KSEST, MCS, MDPS, OC, OS, PCV, TCC, TK, TPS Engine... V6-262 Application TBI, A/T Exc. Calif. or High Alt., Astro & Safari
1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 3 Engine Code [1] Z Figure No. 113 BPEGR, CC, CTS, EEC, EGR-SOL, ESC, ESC-KS, EST, IAC, MAP, OC, OS, PCV, TAC, TCC, TPS, VSS Engine... V6-262 Application TBI, M/T All & A/T Calif., Astro & Safari Engine Code [1] Z Figure No. 114 AIR, BPEGR, CC, CTS, DV, EEC, EGR-SOL, ESC, ESC-KS, TAC, TCC-TVS, TCC-VDV, TVSS, VRVEST, IAC, MAP, OC, OS, PCV, TAC, TCC, TPS, VSS Engine... V6-262 Application TBI, Caballero & El Camino Engine Code [1] Z AIR, CC, CTS, EEC, EFE, EGR, ESC, EST, IAC, MAP, OC, OS, PCV, TAC, TCC, TPS, VSS Engine... 6-292 Application 1 Bbl. Engine Code [1] T Figure No. 115 AIR, CC, DEC-V, DS/P-TVS, DV, DVDV, EEC, EFE, EFE-TVS, EGR, PCV, TRC, TVR Engine... V8-305 Application 4 Bbl., Caballero & El Camino Engine Code [1] H AIR, BPS, CC, CTS, EEC, EFE, ESC, ESC-KS, EST, ISS, MAP, MCS, OC, OS, PCV, TAC, TCC, TK, TPS, VSS Engine... V8-305 Application 4 Bbl., M/T Exc. Caballero & El Camino Engine Code [1] H Figure No. 116 AIR, BPEGR, CC, DEC-V, DS-DV, DTVS, DV, EEC, EFE, EFE/DS-TVS, EGR-SOL, EGR/CP-TVS, ESC, ESC-KS, OC, PCV, TAC Engine... V8-305 Application 4 Bbl., A/T Exc. Calif & High Alt.,Exc. Caballero & El Camino Engine Code [1] H Figure No. 117 AIR, BPEGR, CC, DEC-V, DS-DV, DV, EEC, EFE, EFE/DS-TVS, EGR-BS, EGR-SOL, EGR/CP/TCC-TVS, ESC, KS, OC, PCV, TAC, TCC, TIVS Engine... V8-305 Application 4 Bbl., A/T High Alt., Exc.Caballero & El Camino Engine Code [1] H Figure No. 118 AIR, BPEGR, CC, DEC-V, DS-DV, DTVS, DV, EEC, EFE, EFE/DS-TVS, EGR-BS, EGR-SOL, EGR/CP/TCC-TVS, ESC, ESC-KS, OC, PCV, TAC, TCC, TIVS Engine... V8-305 Application 4 Bbl., Calif., Exc. Caballero & El Camino Engine Code [1] F AIR, C3, CC, CTS, DEC-V, EEC, EFE, EGR, EGR-SOL, EST, MAP, MCS, OC, OS, PCV, TAC, TCC, TPS Engine... V8-350
1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 4 Application 4 Bbl. Exc. Calif. Engine Code [1] L Figure No. 119 AIR, BPEGR, CC, DEC-V, DV, DVDV, EEC, EFE, EFE/DS-TVS, EGR-BS, EGR-SOL, ESC, ESC-KS, OC, PCV, TAC, TCC ngine... V8-350 pplication 4 Bbl., Calif. ngine Code [1] L igure No. 120 AIR, AIR-MGMT, BPEGR, C3, CC, CTS, DEC-V, DPS, EEC, EFE, EFE-TVS, EGR-SOL, EPS, EST, MCS, MDPS, OC, OS, PCV, TAC, TCC, TPS, VB-TVS ngine... V8-350 pplication 4 Bbl., C & K Series ngine Code [1] M igure No. 121 AIR, CC, DEC-V, DS-DV, EEC, EFE, EGR, EGR/CP-TVS, ESR, OC, PCV, TAC, TRC, TVR ngine... V8-350 pplication 4 Bbl. Exc. Calif., G Series ngine Code [1] M igure No. 122 AIR, CC, DEC-V, DS-DV, DV, EEC, EFE, EFE/DS, TVS, EGR, EGR/CP-TVS, ESR, OS, PCV, TAC, TRC, TVR ngine... V8-350 pplication 4 Bbl., Calif., G Series ngine Code [1] M igure No. 123 AIR, CC, DEC-V, DS-DV-EEC, EFE, EFE/DS-TVS, EGR, EGR/CP-TVS, ESR, OC, PCV, TAC, TRC, TVR ngine... V8-379 pplication Diesel, LDE, C & K Series ngine Code [1] C igure No. 124 CDR, EGR, EGR-SOL, EPR, EPR-SOL, FIS, TPS ngine... V8-379 pplication Diesel, LDE, G Series ngine Code [1] C igure No. 125 CDR, EGR, EGR-SOL, EPR, EPR-SOL, ESS, FIS, TPS ngine... V8-379 pplication Diesel, HDE ngine Code [1] J igure No. None CDR, FIS, VRV ngine... V8-454 pplication 4 Bbl. ngine Code [1] W igure No. 126 AIR, CC, DEC-V, DS-DV, DV, EEC, EFE, EFE/CP-TVS, EFE/DS-TVS, EGR, PCV, TAC, TRC, TVR OTES: [1] Eighth digit of Vehicle Identification Number (VIN) denotes engine code.
1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 5 EXPLANATION OF SYSTEMS AND DEVICES ABA ACC ACS AIR AIR-DS AIR-MGMT AIR-SVV APS ASV A.T. BARO BPEGR BPS BPT BVV CAC CC CCV CDR CLFC CP-TVS CP-SOL CTS C3 CV DC DEC DEC-MCV DEC-V DPS DC/CP-TVS DS-DV DS/EGR-TVS DS/P-TVS DS/TCC-TVS DS-TVS DS-VCV DS-VR DTVS DV DVDV DVR-SOL EAC EAC-V EAC/EAS-V ED/ES-V EDV EEC EEC-PV EEC-S EEC-TVS EFE EFE/DS-TVS EFE-SOL EFE/EGR-SOL EFE-TVS EFE-VCV EGR EGR-BPT EGR-BS EGR/CP-TVS EGR/CP/DS-TVS EGR/CP/TS-TVS Air Bleed Actuator Auxiliary Charcoal Canister Air Control Valve Air Injection Reaction Air Injection Reaction Divert Solenoid Air Injection Reaction Management System Air Injection Reaction Switching Solenoid Valve Absolute Pressure Sensor Absolute Pressure Sensor Automatic Transmission Barometric Pressure Sensor Back Pressure Exhaust Gas Recirculation Barometric Pressure Sensor Back Pressure Transducer Bowl Vent Valve Cold Advance Control Charcoal Canister Canister Control Vent Crankcase Depression Regulator Closed Loop Fuel Control Canister Purge Thermal Vacuum Switch Canister Purge Solenoid Coolant Temperature Sensor Computer Command Control Crankcase Ventilation Deceleration Control Diesel Electronic Control System Deceleration Mixture Control Valve Deceleration Valve Differential Pressure Sensor Distributor Spark & Canister Purge ThermalVacuum Switch Distributor Spark Delay Valve Distributor Spark & Exhaust Gas Recirculation Thermal Vacuum Switch Distributor Purge Thermal Vacuum Switch Distributor Spark & Tramsmission ConverterClutch Thermal VacuumSwitch Distributor Purge Thermal Vacuum Switch Distributor Spark Vacuum Check Valve Distributor Spark Vacuum Regulator Distributor Thermal Vacuum Switch Diverter Valve Distributor Vacuum Delay Valve Diverter Solenoid Electric Air Control Solenoid Electric Air Control Valve Electric Air Control & Electric Air Switching(Integral Type) Electric Diverter/Electric Air Switching Valve Electric Diverter Valve Evaporative Emission Control Evaporative Emission Control Purge Valve Evaporative Emission Control Sensor Evaporative Emission Control Thermal Vacuum Switch Early Fuel Evaporation System Early Fuel Evaporation & Diustributor Spark ThermalVacuum Switch Early Fuel Evaporation Solenoid Early Fuel Evaporation/Exhaust Gas Recirculation Solenoid Early Fuel Evaporation Thermal Vacuum Switch Early F uel Evaporation Vacuum Check Valve Exhaust Gas Recirculation Exhaust Gas Recirculation Back Pressure Transducer Exhaust Gas Recircualtion Bleed Solenoid Exhaust Gas Recircualtion & Canister Purge Thermal vacuum Switch Exhaust Gas Recirculation, Canister Purge &Distributor Spark Thermal Vacuum Switch Exhaust Gas Recirculation, Canister Purge &Trapped Spark Thermal Vacuum Switch
1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 6 EGR/CP/TCC-TVS Exhaust Gas Recircualtion, Canister Purge &Torque Converter Clutch Thermal Switch EGR/PWM-SOL Pulse Width Modulated Exhaust Gas Recirculation EGR-S Exhaust Gas Recirculation Sensor EGR-SOL Exhaust Gas Recirculation Solenoid EGR-TDS Exhaust Gas Recirculaiton Temperature Diagnosis Switch EGR-TVS Exhaust Recircualtion Thermal Vacuum Switch EGR/TCC-TVS Exhaust Gas Recircualtion & Torque Converter ClutchThermal Vacuum Switch EGR-VBS Exhaust Gas Circulation Vacuum Bleed Solenoid EGR-VDS Exhaust Gas Recirculation Vacuum Diagnosis Switch EGR-VRV Exhaust Gas Recircualtion Vacuum Regulator Valve EGR-VS Exhaust Gas Recircualtion Vacuum Switch EGR-VSV Exhaust Gas Recircualtion Vacuum Switching Valve EPR Exhaust Pressure Regulator EPR-SOL-EPR Solenoid EPR Electric Purge Solenoid EPR-SOL-EPR Solenoid EPS Electric Purge Solenoid ESC Electronic Spark Control System ESC-KS Electronic Spark Control Knock Sensor ESR Engine Speed Relay ESS Engine Speed Sensor EST Electronic Spark Timing ETK Electronic Throttle Kicker ETM Elapsed Timer Module EVRV Electronic Vacuum Regulator Valve FCS Fuel Control System FIS Fast Idle Solenoid FM Fuel Module FVV Fuel Vapor Valve HDE Heavy Duty Emission Calibration HIC Hot Idle Compensator IAC Idle Air Control ISC Idle Speed control Motor ISS Idle Stop Solenoid LALS Lean Authority Limit Switch LDE Light Duty Emission Calibration MAIR Managed Air Injection Reaction MAP Manifold Absolute Pressure Sensor MAT Manifold Air Temperature Sensor MCS Mixture Control System MDE Medium Duty Emission Calibration MDPS Manifold Depression Pressure Sensor M.T. Manual Transmission OC Oxidizing Catalyst ORC Oxidation Reduction (3-Way) Catalyst ORC/OC Oxidation Reduction & Oxidizing (3-Way &dual bed) Catalyst OS Oxygen Sensor PCS Purge Control Solenoid PCV Positive Crankcase Ventilation PWM-EGR Pulse Width Modulated Exhaust Gas Recirculation P-TVS Purge Thermal Vacuum Switch RVR Response Vacuum Reducer SCS Slow Idle Fuel Cut Solenoid SRDV Spark Retard Delay Valve SSCS Stepped Speed Control Solenoid SVB-TVS Secondary Vacuum Break Thermal Vacuum Switch SVB/EGR-TVS Secondary Vacuum Break Exhaust GasRecirculation Thermal Vacuum Switch TAC Thermostatic Air Cleaner TBI Throttle Body Injection TCC Tranwmission Torque Converter TCC/EGR/CP/TS-VS Torque Converter Clutch, EGR, Canister Purge& Trapped Spark Thermal Switch TCC-TVS Transmission Converter Clutch Thermal Vacuum Switch TCC-VDV Transmission Converter Clutch Vacuum Delay Valve TIVS Tip-In Vacuum Switch TK Throttle Kicker TPS Throttle Position Sensor
1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 7 TRC Throttle Return Control TVR Throttle Valve Relay TVS Thermal Vacuum Switch TVSS Trapped Vacuum Spark System TVV Thermal Vacuum Valve VB-TVS Vacuum Break Thermal Vacuum Switch VCV Vacuum Control Valve VDV Vacuum Delay Valve VMV Vacuum Modulator Valve VR Vacuum Regulator VRV Vacuum Regulator Valve VS Vacuum Sensor VSS Vehicle Speed Sensor VSV Vacuum Switching Valve Fig. 111 Vacuum hose routing. 4-151
1986 Chevy Truck S10/T10 P/U 2WD L4-151 2.5L Page 8 Air Conditioning Vacuum Circuit