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1991 Cadillac DeVille 4.9L Banging Noise
car was just bought we did a tune up. plugs cap rotor new wires fuel filter checked timming. the problem is this car has a knocking noise if you were to bring the rpm up to about 1200 to 1500 in park then let off and let the rpm fall back down to idle you ...
FIX posted 7/29/1999
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| VIN | 1G6CD53B9M |
| Engine | 4.9 L / 8 cyl |
| Symptoms | Banging Noise |
| Occurs | Always, on Decel |
| Misc. | Had Tune Up |
Message Closed w/FIX
Vehicle Data
1991 Cadillac DeVille
| VIN | 1G6CD53B9M |
| Engine | 4.9 L / 8 cyl |
| Symptoms | Banging Noise |
| Occurs | Always, on Decel |
| Misc. | Had Tune Up |
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