Question about 2005 BMW X5
have been having trouble with the car not starting. it will crank and fire quickly but not start . after many tries it will eventually start. sometimes it will stall after a few minutes of driving and other times it will drive just fine. i have replaced the fuel filter spark plugs. could it be the camshaft sensor or the crankshaft sensor?
There can be many causes for the car not starting. Generally it is usually a fuel or a distribution problem. Many fuel problems of this kind are related to electronic injection and ECU. This kind of troubles often need special equipment, and can be fixed only at a well equipped garage, where they can test fuel flow pressure and volume in monitoring ECU feedback at the same time.
Simple things you can do are
Checking and eventually replacing fuel filter.
Checking and eventually replacing air filter.
Check that there is no oil on top of new spark plugs.
In last case try to listen if car is running on three cylinders, this can leave uncombusted oil on cylinder, and mean there are troubles with distribution or camshaft.
It is useless replacing one of the sensors without testing them, and when a sensor is gone you usually get some additional light on your instrument panel. At a garage they will connect straight to the computer and get an error message in return, in case one of the sensors is bad.
Posted on Jul 23, 2008
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Posted on Jan 02, 2017
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