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.
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HOMESERVICE MANUALSCHEVROLET1988S10/T10 P/U 4WD V6-173 2.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESDIAGNOSIS BY SYMPTOMCUTS OUT/MISSES
1988 Chevrolet S10/T10 P/U 4WD V6-173 2.8L
Cuts Out/Misses
1988 Chevrolet S10/T10 P/U 4WD V6-173 2.8LSECTION Cuts Out/Misses
1. Perform thorough visual inspection as outlined in "Intermittent Condition Diagnosis".
2. With engine running at idle, disconnect IAC motor, then remove spark plug wires one at a time while observing engine operation.
3. If RPM drops on all cylinders, refer to "Rough Idle, Stalling" diagnosis. If RPM does not drop for 1 or more cylinders, check spark and mechanical condition for affected cylinders and repair as needed.
4. If engine mechanical condition and ignition system are satisfactory, check injectors as follows:
a. Disconnect fuel injector electrical connectors.
b. Connect 6 volt injector test lamp J-344730-2 or equivalent between electrical connector and injector, then crank engine.
c. If lamp fails to flash at any injector, check for faulty injector drive circuit, damaged wiring or improper electrical connections and repair as needed.
RENDER: 1.0x
NO RELATED
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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.