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Steve, BMW Expert
Category: BMW
Satisfied Customers: 25231
Experience:  BMW Expert
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I have a 2004 bmw 745li. The problems I have are the idle is

Customer Question

I have a 2004 bmw 745li.
The problems I have are the idle is too fast at 900rpm at cold start it missfires for a couple of mins then runs ok, after the car has been been running a while and the engine is hot, go back to re start it and it cranks over a lot before the engine will start again.
Submitted: 1 year ago.
Category: BMW
Expert:  Shantal-Mod replied 1 year ago.
I'm Shantal and I'm a moderator for this topic.
I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.
I was checking to see if you had already found your answer or if you still need assistance from one of the Professionals.
Please let me know if you wish to continue waiting or if you would like for us to close your question?
Thank you,
Customer: replied 1 year ago.
Hi Shantal, I will continue to wait please.
Expert:  Steve replied 1 year ago.

do any warning lights come on?

Customer: replied 1 year ago.
Hi Steve, I have a drivers airbag light on and the outside temperature sensor reads minus 40
Expert:  Steve replied 1 year ago.

I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.


even if you are on a subscription plan with multiple or unlimited questions you must still CLICK ON a positive rating although you will not be charged anything additional beyond your subscription rate
Thank you for your attention to the rating requirement.

I would suspect that your running issues are being caused by leaking fuel injectors so this should be checked. I would also suggest having the engine checked for intake air leaks.


the airbag light and temp reading don't have anything to do with this.

Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.