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Rough Idle While Cold 700 1990

posted by  jayriddle1 on  Tue Apr 3 17:07 CST 2007
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last visit: Tue Feb 9 16:09 CST 2010
[RELATED]

While the car is cold, my 740 idles rough -- whole car rattles and shakes. If I put the auto trans into Park, the idle drops down to nearly 500 RPM and seems to get rougher and rougher until the Check Engine light comes on and the engine seems like it's getting closer and closer to stalling.

I cleaned the throttle bodies, but it did not solve the problem. As soon as the car gets warm (5 minutes into my morning commute), the problem disappears.

What could be causing this?

Thanks,
JR






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