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Intermittently Very Rich And Rough Idle
Hello. I'm struggling with a 1989 Ford F-150 with a 4.9. It intermittently has a very rough idle with VERY rich exhaust. Runs fine off idle. I am the third shop to have it for the symptom. Other shops have replaced fuel pump, throttle body, plugs, wires, cap, ... Login to read more.
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| Engine | 4.9 L |
| Trans | 5-speed Standard |
| Symptoms | Idles Rough, Rich Idle Condition |
Vehicle Data
1989 Ford F-150 Custom 4.9L Idles Rough, Rich Idle Condition
| Engine | 4.9 L |
| Trans | 5-speed Standard |
| Symptoms | Idles Rough, Rich Idle Condition |
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