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1990 Ford F-250 Custom 5.8L Poor Idle Quality, Surge
Recently rebuilt Engine. Problem seemed to start after engine overhaul. At engine overhaul, an RV cam was installed. The main problem is that the 02 voltage will cycle normally for 10 to 15 seconds when you come down to idle and then it will indicate an ex...
FIX posted 3/22/1999
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Message Closed w/FIX
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| VIN | 2FTHF25H8L |
| Engine | 5.8 L / 8 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Emissions | California |
| Symptoms | Poor Idle Quality, Surge |
| Occurs | Idle |
| Misc. | 2 Wheel Drive |
Trouble Codes
| 12 | KOER Idle RPM problem |
| 44 | KOER Thermactor problem |
Message Closed w/FIX
Vehicle Data
1990 Ford F-250 Custom
| VIN | 2FTHF25H8L |
| Engine | 5.8 L / 8 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Emissions | California |
| Symptoms | Poor Idle Quality, Surge |
| Occurs | Idle |
| Misc. | 2 Wheel Drive |
Trouble Codes
| 12 | KOER Idle RPM problem |
| 44 | KOER Thermactor problem |
Video