Q: The problem is even though I reconnect to the blower motor properly those three other codes came up and a car won't start

I would suggest running your own separate wire system to the battery and keeping the lights separate from any interior systems. The wiring in this vehicle controls everything through modules, and if you tap into the modules, they could cause...

BMW had a TSB (technical service bulletin) out for a casting flaw where a leak could develop on the lower right side of the cylinder head. Good news though, that was on the M52TU engines and you have an M54...

Hi there: Thanks for writing into YourMechanic.com. The truth is that you should always defer to a professional mobile mechanic to inspect and repair your ignition lock cylinder issue. However, before you begin to worry that something may be faulty...

Hi there. Based on your input, it's likely that the source of your issue are the relay's (as indeed they do "click" when activated) but it's also possible that your issue is caused by a different ignition system component. Assuming...

The pulleys may not be lined up in the same plane. Look at the harmonic balancer and crank pulley in particular. The rubber bond in the balancer may have failed thus causing misalignment of the pulleys relative to the other...

If the original pump had a cover over the electrical, the new one should also have a cover over any electrical components. It may be possible to remove the other encasement from the original fuel pump and use it to...

The radiator top tank if it is cracked will require the radiator to be replaced. It cannot be fixed.

The first thing I would check for is vacuum leaks. Any air that gets into the engine without being measured by the Mass Air Flow meter can lean out the mixture and cause drivability problems. Check all the hoses and...