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Car keeps stalling out along with reduced power and check engine

About 2 months ago I started getting a hesitation starting from idol almost a stall out. Last week my check engine light came on along with the reduced power light. The code came back a p1239. My mechanic took the throttle control unit apart and we found 3 of the 6 pivot plates lying inside the throttle control body. Luckily we found all 7 screws that were missing. After replacing them and putting everything back together both lights came back on within 5 minutes. Now when I come to a stop the engine dies all together unless I keep the rpms at 1500. Which is not an easy thing to do starting out at a stop light...... There is black smoke coming from the exaust when I accelerate and the cruise control stopped working as well.... What are your thoughts Thanks Bob

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You did not id what year/make/model but it sounds a lot like a typical failure of the MAP

however, depending on your year/make/model the code could also be a sign of an power concern to your PCM, (powertrain control module) aka computer

Posted on May 16, 2010

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