Question about 1997 BMW 328

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Hard starting and rough idle

To start from cold have to give a little gas but once it starts warming up no problem. The rough idle occurs when cold start give some gas idle smooths out but if in traffic idle starts to drop

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  • 208 Answers

The idle valve is the most common problem for hard starting in cold weather. I would recommend having it removed and inspected for contamination. Sometimes they can be cleaned out. If it has heavy carbon buildup, you may have to replace it. (if the idle valve is removed, the shutter inside should easily move when you rotate it from side to side and you can also look at it with a flashlight for a visual inspection.

Posted on Feb 29, 2012

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Posted on Jan 02, 2017

BeamerGuy
  • 28 Answers

SOURCE: I have a E36 328i

I had the same problem with my car it is not a major problem your car probably has high mileage, You can replace your torque converter replaced but that will be expensive, The price to fix it completely outweigh's the problem.

What I suggest and works for me is while the trans is still cold just anticipate the shift from 1st to 2nd and just before the change occurs eas of the accelerator and then when the car has changed from 1st to 2nd just accelerate again.

Posted on Nov 27, 2008

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Need year/make/model/mileage of vehicle to provide a more specific set of troubleshooting steps.

When was the last tune up? Hard starts when cold are usually caused by fouled spark plugs, worn plug wires, or weak ignition coils. Fuel systems are not as effected by temperature changes as the ignition components.

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