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 MANUALSFORD1987ECONOLINE E150, VAN CARGO EXTENDED, 5.8 HREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCEC DIAGNOSING & TESTINGQUICK TESTKEY ON/ENGINE RUNNING (KOER) SELF-TESTCODE OUTPUT
1987 Ford Econoline E150, Van Cargo Extended, 5.8 H
Code Output
1987 Ford Econoline E150, Van Cargo Extended, 5.8 HSECTION Code Output
- Deactivate SELF-TEST (disconnect jumper wire). Start and run engine at 2000 RPM for 2 minutes to warm up EGO sensor. Turn engine off and wait 10 seconds. Insert jumper to activate SELF-TEST. DO NOT depress throttle during test unless a Dynamic Response code occurs.
- Start engine. The engine ID code will be displayed. On 2.3L, 2.9L and 3.0L engine equipped vehicles, depress and release brake pedal, ONE TIME ONLY, after engine ID code has been displayed. This will test the Brake On/Off (BOO) switch. On pickups equipped with 4.9L and 5.0L engines, steering wheel must be turned 1/2 turn and released after ID code.
- Run test. If Dynamic Response code 1 (10 with STAR tester) occurs, briefly accelerate engine to wide open throttle (WOT). The ENGINE RUNNING SELF-TEST service codes will then be displayed. Observe and record all codes.
NOTE:
The Engine ID code is 1/2 the number of cylinders (a 2 equals a 4 cylinder engine). Diagnostic tester adds a zero to all single digit readings. A "20" on Diagnostic tester equals a 4 cylinder engine. Some vehicles do not require a brief WOT, they will not display a 1 (10).
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.