Pues ese es otro de los temas; hay usuarios en USA que se quejan del rendimiento del coche tras pasar por cambio de bomba y reprogramación:
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Here’s another angle…
Who knows what BMW is changing in their software updates. Some updates have changed the way the car performs. At what point does the manufacturer have the responsibilty to give the client the same performance traits as when the car was test driven and then purchased? At what point does the consumer have a right to have the same performance levels as what they originally purchased? Is it a “breach of contract” situation, you paid for one thing and ended up with another? Not that the differences are huge, but most do notice a difference of some kind after reprogramming. Well that’s getting into a whole differnt issue in and of itself, but I still don’t want them pulling power from me to take strain off the pump. I want what I paid for…maybe even more. Thank you for the more Steve D.
My car has been fine since the pump was replaced with the latest design and software update. Although I’ve only gone another 4,000 miles since then so I could also be pressing my luck.
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Y otra: problemas derivados de la calidad de los combustibles. BMW en USA desaconseja el uso del E15.
Bimmer1 Oct 26th, 2010 Link
It’s been 3 years and the pump has been redesigned multiple times and many new software applications have been released to correct the issue. Yet no one has told us what the actual cause of the pump failure is. Some of the latest pumps have still failed even with the latest software installed. I’m still betting on poor fuel quality and ethanol playing a large part in this ordeal. These fuel system components are state of the art and they require a very high standard of fuel quality to operate efficiently and keep working properly over time. The piezo crystalline injectors contain thousands of crystals that are electronically charged and can pulse up to 10,000 times a second based on driver demands. As you can imagine, there’s not much margin for error when you’re dealing with something that happens 10,000 times per second. That’s just one example of how advanced the fuel system components are these days. Poor quality fuel leaves behind carbon deposits, dirt, debris, oils, and films that contaminate components and can lead to poor operation or total failure. Personally I just don’t think we can meet those standards, at least not in the US. I was shocked when I found out the percentages of ethanol in most fuels when we first started having these issues. Until recently ethanol levels were only supposed to be up to 10% of the total fuel mixture, no more. I can tell you first hand from the tests we’ve had to do on fuel samples that it’s usually more like 15-22% ethanol. Just recently, the government has approved and is pushing for the use of E15, which is supposedly up to 15% ethanol. This is nothing more than a money making scheme and does nothing to improve emissions or reduce our dependence on oil. In fact it takes more oil to produce ethanol that it would just to use gas that doesn’t have it just like we used to. But no one would make as much money doing that way. Although E15 availability is still a little ways off in the future, we should assume it will probably end up being much higher around 20-25% ethanol or more based on our current levels. BMW immediately released a statement with the E15 announcement that said after initial testing they do not approve and strongly urge client’s not to use E15 fuels. Although there was no specific mention of why, I’m sure there’s a good reason for releasing the statement. Now what if all of this is because of a fuel quality issues, who is responsible for that? You’ve got the government pushing the green agenda which makes them money. Farmers support it because growing corn for ethanol makes them a guaranteed profit from government subsidies. Fuel companies charge more to refine it, then they sell it at a higher cost so they make even more money from it. So who’s responsible when the fuel isn’t what it’s supposed to be? Who takes the blame and burden of paying the costs associated with it when problems come up as a result? Those are the questions that no one seems to be willing to answer. Is it the governments fault for not regulating the fuel quality to a high enough standard? Are the farmers growing crops that can meet those standards? Are the oil companies just blatantly ignoring the requirements? Are filling stations not paying attention or maintaining their tanks properly? It’s any ones guess at this point. Fuel standards in Europe are much stricter, and from what I’ve been told pump failure overseas happens much less frequently. That’s just one more thing that keeps me coming back to our fuel quality potentially causing or at least contributing to the problem. Hopefully we will have the answers to these questions soon, but who really knows when. Of course, this is just my personal opinion based on what I’ve seen over the past several years and I’m certainly no expert in the field. My only suggestion to my client’s is to make sure they are using top tier fuels (
http://www.toptiergas.com/retailers.html) and the highest octane available which is usually 93 octane. What else can we do? I think we all need to take a step back and figure out what our real priorities are in this country before it’s too late. Maybe it already is.
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