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1989 Ford F-250 Custom 5.8L Poor Idle Quality, Hesitation, Stall
This F-250 has a rough idle with stalling and low power. Fuel pressure is ok even under load. act, ect, map,are ok tps .925v sweep is good. EVP-.428v. sig return and vref ok. O2 sensor -starts at .850v and backs up under .12v and stays there. Disconnected sec....
FIX posted 10/7/1998
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| VIN | 1FTHX25H7K |
| Engine | 5.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | Ca emissions |
| Symptoms | Poor Idle Quality, Hesitation, Stall |
| Occurs | Hot, on Accel, Idle |
| Misc. | Over 8800#Gvwr |
Trouble Codes
| 12 | low idle KOER |
Message Closed w/FIX
Vehicle Data
1989 Ford F-250 Custom
| VIN | 1FTHX25H7K |
| Engine | 5.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | Ca emissions |
| Symptoms | Poor Idle Quality, Hesitation, Stall |
| Occurs | Hot, on Accel, Idle |
| Misc. | Over 8800#Gvwr |
Trouble Codes
| 12 | low idle KOER |
Video