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 MANUALSFORD1991CAB & CHASSIS 5.8 H, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - 7.5LCODE-TO-TEST MENUS - 7.5L (3-DIGIT CODES)CONTINUOUS CODE-TO-TEST MENU - 7.5L (3-DIGIT CODES)
1991 Ford Cab & Chassis 5.8 H, Standard
Continuous Code-To-Test Menu - 7.5L (3-Digit Codes)
1991 Ford Cab & Chassis 5.8 H, StandardSECTION Continuous Code-To-Test Menu - 7.5L (3-Digit Codes)
CONTINUOUS MEMORY - CIRCUIT TEST & STEP MENU
| Code No. | Go To: Test No. (Step No.) |
|---|---|
| 112 | DA (90) |
| 113 | DA (90) |
| 117 | DA (90) |
| 118 | DA (90) |
| 122 | DH (94) |
| 123 | DH (90) |
| 126 | DF (90) |
| 139 | H (1) |
| 144 | H (1) |
| 171 | H (1) |
| 172 | H (1) |
| 174 | H (1) |
| 175 | H (1) |
| 176 | H (1) |
| 177 | H (1) |
| 178 | H (1) |
| 179 | HA (15) |
| 181 | HA (1) |
| 182 | HA (15) |
| 183 | HA (1) |
| 211 | NA (1) |
| 212 | NA (4) |
| 326 | DL (94) |
| 327 | DN (91) |
| 328 | DN (90) |
| 332 | DN (95) |
| 334 | DN (98) |
| 337 | DN (93) |
| 452 | DP (1) |
| 512 | QB (1) |
| 542 | J (90) |
| 543 | J (93) |
| 556 | J (95) |
| 617 | TC (30) |
| 618 | TC (30) |
| 619 | TC (30) |
| 624 | TC (30) |
| 628 | TC (30) |
| 634 | TC (30) |
| 637 | TC (30) |
| 638 | TC (30) |
| No Codes/Codes Not Listed | QA (1) |
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.