I have a 1996 850 GLT which I just put a used engine into about a month ago. The engine is running good, but the idel is 1200 RPMs in part and about 950 in drive. This is to high by about 300 from what I can tell. Any ideas on what could cause this? This car had 150K miles before I removed the engine, and all components from teh old engine were switched to the new engine. I have read some where that it could be the catalytic converter? I have checked the throttle cable and it is adjusted correctly. Any help would be appreciated. I do have a 0400 engine code which says its an EGR issue that appears sporadically but not all the time. Thanks
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