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 MANUALSFORD1999F 150 4WD PICKUP V6-4.2L VIN 2REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSZ - INTERMITTENTTEST NOTES
1999 Ford F 150 4WD Pickup V6-4.2L VIN 2
Test Notes
1999 Ford F 150 4WD Pickup V6-4.2L VIN 2SECTION Test Notes
This Pinpoint Test is intended to diagnose and isolate intermittent concerns for the following:
- All Electronic EC subsystems.
- Coil Pack ignition systems using the Distributorless Ignition System Tester (DIST).
This chart is used to determine which test to run for the suspect circuit. Corresponding PIDs to each circuit are listed. Some circuits do not have an associated PID and will be measured with a digital multimeter. If the vehicle is a coil pack system with no start, perform the ignition test with the distributorless ignition system tester.
- All Electronic EC subsystems.
- Coil Pack ignition systems using the Distributorless Ignition System Tester (DIST).
Intermittent Test Chart:
Intermittent Test Chart:
Intermittent Test Chart:
This chart is used to determine which test to run for the suspect circuit. Corresponding PIDs to each circuit are listed. Some circuits do not have an associated PID and will be measured with a digital multimeter. If the vehicle is a coil pack system with no start, perform the ignition test with the distributorless ignition system tester.
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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.