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p0420
explain how exhaust manifold leak causes 420 yet fuel trim lt. is 00. new o2s and cat. Login to read more. 
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| Engine | 4.7 L |
| Trans | 5-speed Automatic (Electronic) |
Vehicle Data
2005 Jeep Grand Cherokee Limited 4.7L
| Engine | 4.7 L |
| Trans | 5-speed Automatic (Electronic) |
Video