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 SOLENOIDKE31 - CHECK FOR VACUUM LEAKS AT IDLE
1994 Ford F 250 2WD Pickup V8-351 5.8L
KE31 - Check For Vacuum Leaks at Idle
1994 Ford F 250 2WD Pickup V8-351 5.8LSECTION KE31 - Check For Vacuum Leaks at Idle
- Key "ON", engine running.
- With engine at idle, listen for a vacuum leak.
- Inspect Idle Air Control (IAC) valve assembly, throttle body, Exhaust Gas Recirculation (EGR) valve, vacuum hoses, and other intake connections for leaks or loose connection.
- Is a fault indicated?
Yes -- Service as necessary. Clear Keep Alive Memory. Clearing Keep Alive Memory (KAM) and Relearn Procedure
Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)
No -- Go to KE32.
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.