iTrader: ( 0) EGR Valve fire risk recall. Full page article in this week's Auto Express magazine regarding the issue of faulty EGR valves. Quote " in affected diesel BMWs, glycol. Coolant leakage from EGR coolers can in combination with typical soot deposits and a high temperature normally present in the EGR module result in smouldering particles.
When a cold engine is started, the secondary air pump will run for a calculated amount of time. The check valve is the most common part to fail. On early X3 models, a flow meter is used on the inlet of the pump to confirm pump operation. In this tech article I will show you how to test the secondary air system valve on 6-cylinder M54 engine.
A clogged or malfunctioning EGR valve can disrupt the vehicle’s air-fuel ratio, which can cause engine performance issues such as a reduction in power and fuel efficiency. The vehicle may also stall or hesitate while accelerating. 2. Rough Idle. One of the most common symptoms of a problem with the vehicle’s EGR valve is a rough idle.
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Black exhaust smoke coming from the exhaust pipe on a X3. This problem is usually seen in diesel engines and it is caused by a great increase in the amount of fuel supplied to the engine, that is to say, the engine is burning more fuel than it should. ⚠️ Check if the consumption of fuel of your X3 has increased significantly.
They have the same issues (check the E90POST\M47 M57 diesel forum); however the root cause is considerably different - on diesels the cause is EGR. The solution is also different due to the different head and intake design It's hard to say how many diesel owners are having problems, as BMW doesn't say and these forums are not representative at all.
The engine will run in default mode and if the prob goes then it could be the maf. If the egr valve failed you would get an orange light on the dash. If you don't then the egr valve is working fine. There is a boost sensor on the side of the manifold, this can go faulty.

16V683000. BMW of North America, LLC. (BMW) is recalling certain model year 2015 BMW X3 sDrive28i, X3 xDrive28i, X3 xDrive35i, X3 xDrive28d, X4 xDrive28i and X4 xDrive35i vehicles, and model year

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    • bmw x3 egr valve problems