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 MANUALSFORD1994F 250 2WD PICKUP V8-351 5.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSKE - IDLE AIR CONTROL CONTROL SOLENOIDKE10 - CHECK FOR IAC SIGNAL FROM THE PCM
1994 Ford F 250 2WD Pickup V8-351 5.8L
KE10 - Check For IAC Signal From the PCM
1994 Ford F 250 2WD Pickup V8-351 5.8LSECTION KE10 - Check For IAC Signal From the PCM
- Key "OFF".
- Breakout box installed.
- Reconnect Powertrain Control Module (PCM) to breakout box.
- Reconnect Idle Air Control (IAC) solenoid.
- Connect Digital Volt/Ohm Meter (DVOM) between test pin 21 and test pin 40 at the breakout box.
- Start engine.
- Slowly increase rpm to 3000 rpm.
- Is voltage between 3.0 and 11.5 volts?
Yes -- Go to KE11. KE11 - Check Idle
No -- Remove IAC solenoid and Verify that it is not stuck open. If OK, replace PCM. Remove breakout box. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)
RENDER: 1.0x
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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.