Question about 1990 BMW 5 Series

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Oil in throttle body - 1990 BMW 5 Series

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Hi, you dont say how much oil is in the body but if its a high miler some residue is normal as it seems to make its way up via the vent tube.This can be cleaned out with a good throttle body cleaner. But remove the body from the intake system first as you dont want to dose the engine with this stuff as it will cause the engine to over run if too much is fed into the intake. Let it dry out before re starting the car. Be carefull.

Posted on Apr 14, 2013

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Clean your Throttle body with throttle body cleaner or Deep Creep made by Seafoam. When the carbon and varnish build up in your throttle body get's hot, it gums up the IAC (Idle air control) valve which help moderate your engine's rpm to keep it from stalling.
If the IAC is stuck due to the gum of the carbon and varnish in your throttle body, you have stalling issues which you have described. Start with that and replace your air cleaner filter since your going to clean your throttle body.
Good luck and be safe, thank you for using fixya and post us back.

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