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1988 Ford F-150 Custom 5.0L Poor Idle Quality, Hesitation, Stall, MIL Lamp on
Aloha fellow Ford techs, I have a friend's truck that idles poorly. Recently he replaced the engine due to, I think, rapid oil loss/ seized engine. Anyway, he says the truck idles the same after replaceing the engine as it did before the seized engine. ...
FIX posted 5/21/2000
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| VIN | IFTEF14N9J |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Emissions | US FED |
| Symptoms | Poor Idle Quality, Hesitation, Stall, MIL Lamp On |
| Occurs | Always, Cold, Cruise, Idle |
Trouble Codes
| 12 | rpm out of spec extended idle |
| 18 | no tach/ spark output |
| 41 | hego system always lean |
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Vehicle Data
1988 Ford F-150 Custom
| VIN | IFTEF14N9J |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Emissions | US FED |
| Symptoms | Poor Idle Quality, Hesitation, Stall, MIL Lamp On |
| Occurs | Always, Cold, Cruise, Idle |
Trouble Codes
| 12 | rpm out of spec extended idle |
| 18 | no tach/ spark output |
| 41 | hego system always lean |
Video