Question about 2001 BMW 5 Series
Have an intermitent missfire on No 3 and 4 cylinders. If I idle at 500rpm for three mins then I get a missfire in No 3 & 4 cylinders. I have changed the cils and plugs but the misfire is still there. To clear the misfire I travell for about ten minutes and the problem goes away. If I keep the rpm above 980 then there is never a missfire. What is the problem? BMW South Africa want to strip the engine but I can not afford to do this. Please can you help?
Your car is not suppose to idle at 500 rpm . 800 to 950 is the proper idle, unfortunately it is controlled by the computer. have you checked the idle speed control valve? also check the air flow meter
Posted on May 28, 2009
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Posted on Jan 02, 2017
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