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1992 Ford F-150 Custom 4.9L Poor Idle Quality, Hesitation, Surge
Hi group Customer complaint is poor idle and low speed miss/stumble from off idle up to 40 mph. We checked the codes and found several, (see code section) cleared codes and they have never come back. We checked the fuel pressure and it is 2 lbs low during runn...
FIX posted 1/19/1999
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| VIN | 1FTDF15Y2N |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | US FED |
| Symptoms | Poor Idle Quality, Hesitation, Surge |
| Occurs | Hot, Under Load, Idle |
| Misc. | Pick Up |
Trouble Codes
| 327 | EVP sensor signal low |
| 328 | EVP sensor voltage low |
| 452 | Air Management solenoid 2 TAD did not respond |
| 556 | Fuel Pump relay did not respond |
| 634 | Manual lever position signal indicates the trans is not in park/neutral |
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Vehicle Data
1992 Ford F-150 Custom
| VIN | 1FTDF15Y2N |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | US FED |
| Symptoms | Poor Idle Quality, Hesitation, Surge |
| Occurs | Hot, Under Load, Idle |
| Misc. | Pick Up |
Trouble Codes
| 327 | EVP sensor signal low |
| 328 | EVP sensor voltage low |
| 452 | Air Management solenoid 2 TAD did not respond |
| 556 | Fuel Pump relay did not respond |
| 634 | Manual lever position signal indicates the trans is not in park/neutral |
Video