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I drive a BMW 545i E61 with 90000 miles on the clock. Bought…

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Hi. I drive a...

Hi. I drive a BMW 545i E61 with 90000 miles on the clock. Bought from Dave Fox & owned for a year. When cold the idle is really lumpy but alongside this we've been experiencing a worsening lurch when the engine is cold. Today it was so bad that my girlfriend managed to run into parked motorbikes even with the handbrake on. I know I have to take it to the garage but would like some independent experienced advice on what sort of issue this is and how it could be resolved. It looks like it will be an insurance claim on the damage to the front of the car and to the bikes, but this really wasn't our fault... Thanks

Mechanic's Assistant: How many miles are on the car? What size is the engine?

90,000 miles, auto box, v8 5451 545i

Mechanic's Assistant: Are you fixing your 545i yourself? What have you tried so far?

Nope, nothing

Submitted: 6 months ago.Category: UK Car
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Answered in 51 minutes by:
12/20/2017
UK Auto Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: UK Car
Satisfied Customers: 5,626
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic Vehicles
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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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UK Auto Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Hey how are you,I will try to help you with this issue

I would have it scanned and have fault codes retrieve and based on these fault we can pull up a pin point troubleshoot and be accurate . but with that said , ask the garage to clean Throttle body from carbon build up that could be preventing the throttle plate from closing all the way and cause the lurch .also let them do a smoke test on the vacuum system ,a vacuum leak will cause that and Clean Maf sensor ,( mass air flow sensor ), there is also at tb body a bunch of vacuum line and canister ,these are common on leaking and causing that when cold .

I would start here and go from there

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Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: UK Car
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