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Why is my 1999 24L Old's Alero running rough after changing the plugs?
Wiki User
∙ 15y ago
i think you disconnect one of the plug wires or you need to change one of them .
It could be the oxygen sensor, valves, plug wires or a sticking fuel injector. You'll have to get a little more specific. If it ran well BEFORE changing the plugs and now it doesn't, perhaps 2 of the plug wires have been cross-connected.
Wiki User
∙ 15y ago
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