5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
I can't put my finger on it, but I'm having some trouble with the car just not wanting to respond as of late. Occasionally it's got a bit of a rough sound to it, not stalling or sputtering, just kind of being sluggish.
I've got no fault codes from the engine. Air filter is brand new. The only thing that has really changed is that the temperature has dropped drastically.
I haven't done much poking around under the hood for cracked hoses... Spark plugs were changed last year, the air filter is a brand new K&N, oil could probably use a change but it's under 3000 miles since the last one.
What should I look for that could cause the car to run rough with cold weather? I'm just not getting that same feeling when I hit the gas as I used to.
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