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1987 Ford F-150 Custom 5.0L Excessive Emissions
Discovered that the "signal" wire (grn/pur wire) coming from the computer to the oxygen sensor was reading 4.3vt. with O2 disconnected. This is the wire that is supposed to carry the signal from the O2 to the ECM, not the other way around. Disconnected 60 pin ...
FIX posted 9/17/2001
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Message Closed w/FIX
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12 Replies Received
Related Documents & Media | VIN | 1FTEF14N4H |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / Port Fuel Injection |
| Emissions | US Fed |
| Symptoms | Excessive Emissions |
| Occurs | Always |
Trouble Codes
| 33 | Insuficeint EGR flow |
| 41 | EGO not switching Lean Bank 1 |
Message Closed w/FIX
Vehicle Data
1987 Ford F-150 Custom
| VIN | 1FTEF14N4H |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / Port Fuel Injection |
| Emissions | US Fed |
| Symptoms | Excessive Emissions |
| Occurs | Always |
Trouble Codes
| 33 | Insuficeint EGR flow |
| 41 | EGO not switching Lean Bank 1 |
Video