Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1987S10/T10 P/U 2WD V6-173 2.8LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDESCRIPTION AND OPERATIONMODES OF OPERATIONSTARTING MODE (PORT AND TBI INJECTION)
1987 Chevrolet S10/T10 P/U 2WD V6-173 2.8L
Starting Mode (Port and TBI Injection)
1987 Chevrolet S10/T10 P/U 2WD V6-173 2.8LSECTION Starting Mode (Port and TBI Injection)
When the ignition switch is rotated to the "On" position, the ECM energizes the fuel pump for two seconds and fuel pressure is built up to the TBI unit. The ECM then checks the coolant temperature sensor, the TPS and determines the proper air/fuel mixture for starting.
The ECM controls the air/fuel ratio by changing the length of time the injectors are turned on and off. This is accomplished by "Pulsing" the injectors for short periods of time.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.