Car starts, revs up high then dies
The first thing you need to do is run and electronic engine control fault code test. To learn how to do that go here.
SOURCE: Idle problem
I've had an Idling problem with my 1993 318i E36. First, I would suggest getting the fault codes for your car. There are places where you can have these codes scanned for free such as autoparts stores. The fault codes will tell you which components aren't working properly. Based on my fault codes, I replaced the Idle Control Valve, the oxygen sensor, the camshaft position sensor, and the air intake boot. I could easily install all of these parts in less than an hour. All of these replacements cost me a total of about $200 and solved the problem completely. Granted, I did this myself. Look forward to the dealer charging you over $500 if you have as many problems as I did.
SOURCE: e46 318i idle rev problem
GO TO A KRAGEN OR AUTOZONE AND HAVE THEM RUN A TROUBLE CODE TEST, THIS COULD BE A TPS PROBLEM, VACUUM LEAK OR STUCK/WARPED THROTTLE PLATE.
SOURCE: LOCATION OF BATTERY 1997 bmw 318i
In the Trunck/Boot on the right hand side. Lift up black plastic tray and it is under there.
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