2008 BMW 335XI: sudden loss of power

Filed Mar 11, 2018 · Engine, Fuel system · 124,500 miles · VA

My car is experiencing the infamous hpfp failure. The code thrown is p2aaf (fuel pump plausability) and p29f2 (high-pressure fuel system, fuel pressure). When starting the car, the engine shakes, rumbles and almost dies, erratic idle...I have to rev up the engine for a few minutes to keep idle stable. The check engine light and ses light comes on. It has reduced power, I can not accelerate quickly any more. I see people behind me move over everytime I go from a stop. I took the car to bmw recently and they found $8,800 worth of repair cost on the vehicle. I was told the hpfp needs to be replaced but it is out of warranty since the car is 10 years old and past 120,000 miles. They would not replace it for free. I was also told that the pump was replaced a few times before. I think I am the second owner of the car. I purchased it in 2/2013. Roughly 3 years ago, the car's engine shutdown while I was in the middle of the highway. I was able to keep it going about 4 miles an hour and pulled over. I was told the low pressure fuel pump was replaced under cpo warranty to get the car working again. This car is a danger to me and my kids. I think the hpfp should be replaced free of charge if the symptoms exist, no matter if their warranty has expired.

Filed Apr 25, 2016 · Engine, Fuel system · 75,000 miles · CT

Car randomly lost power and went into limp mode. Heavy stuttering with check engine light. Occurred while merging on the highway and resulted in near collision. Car had 75k miles at the time, now has 76k. Car drives fine, but when pressing accelerator passed 50% car begins to stutter and go into limp mode. No check engine light or issues until this happens. Check engine codes read, multiple cylinder misfire. All symptoms point to hpfp.

Filed Dec 8, 2014 · Fuel system · NY

2008 bmw 335xi failure of fuel injectors *cn the consumer was informed, it would cost 2,000 to replace the defective fuel injector, even if all of them were not malfunctioning, because the newest generation of fuel injectors developed for the 2007 and later models were not compatible with earlier versions of the injectors.. The consumer experienced multiple limp mode events and engine malfunction messages on numerous occasions, while driving at highway speed; particularly when accelerating. The vehicle would suddenly lose engine power. Each time, he had to pull over, turn the vehicle off, wait several minutes and then restart the vehicle.

Filed Nov 6, 2014 · Fuel system · 79,173 miles · PA

April 14, 2014 our car went in for service. May 7, 2014 it was returned for a 'reduced power,service engine soon'light. At that time, the fuel pump was replaced and covered under a recall. In july the light came on again and the battery was dead. We replaced the battery. In late august, the warning light appeared again. September 8,2014 the car went into the garage. At this time we were told it was most likely the turbo, est repairs at $5500.00. At this time the car had 83985 miles on it(the turbo was under an "extended" warranty until 82,000). I contacted bmw and ask for an extension on the warranty since we were less than 2,000 miles over. They agreed to pay for the part, but not the labor which is 2600.00. While I appreciate their effort, it is not enough. They obviously are aware that there is an issue with this part, since they extended the warranty so I feel that they should cover the entire amount. Yesterday the same warning light came on and has stayed on. The car is running very loudly, shaking, with little power. We are requesting your advice and/or assistance about what to do next. One thing I didn't mention was approximately one month after purchasing this pre-owned car, the engine had to be replaced with only 25,000 miles on it. So the current engine has approximately 55000 miles on it.

Filed Aug 27, 2012 · Engine · 29,500 miles · PA

Vehicle lost power while on the highway, appears to be an engine malfunction. Took to bmw dealership and they replaced the fuel pump, however problem still occurs. Unfortunately, the warranty has just expired so I had to pay out of pocket. It appears many individuals have had the same issues with this particular yr, make & model so unsure of why bmw has not issued a recall to address the problem. This absolutely should be looked at by the manufacturer as from my experience with it occurring on the highway it can definitely cause an accident.

Filed Feb 21, 2011 · Fuel system · 35,700 miles · CA

I own a 2008 bmw 335xi. The fuel system seems to have problem. I was driving on freeway, and the engine looses power suddenly on the freeway, the RPM drops, and I have to press the gas pedal hard to get to a comfortable speed of 60mph, the car still doesn't drive at full regular power. I first complained 4 months ago, they said it's nothing. I complained again a month afterwards. The dealer said there's a high pressure fuel pump recall and kept the car with them for 1 week. 3 months afterwards, this week, I experienced the same power loss again on a smaller scale. I didn't pay much attention, I took the car to dealer for regular service, the dealer said it has a recall again for the same fuel system issue - high pressure fuel pump loss of pressure. My car is still with the dealer, I don't know if and when they could fix it. I don't see a second recall on this issue yet. And bmw did not send me a recall letter yet. I think all of bmws twin turbo powered card should be immediately pulled off roads and checked and fixed before there's any loss of lives or property. At this point clearly, bmw doesn't seem to have a fix for this. A the federal safety agency investigation in to this issue would be appreciated and alert the public about the issue. Until this is fixed, bmw's twin turbo powered cars should be put on "do not recommend" list as far as safety.

Filed Aug 31, 2010 · Fuel system · 25,000 miles · PA

Bmw n54 engine 1. Symptoms begin with increasing long-cranks on start-up. Eventually the engine performs at reduced power, and ultimately total loss of power. 2. I am on my 3rd high pressure fuel pump (hpfp) with approximately 25,000 miles on the car in 2 years and 2 months of ownership. Apparently the replacement of the hpfp frequently leads to a problem with the spark plugs, and coils which cause severe mis-firing and violent shaking. My coils were replaced as was a catalytic converter and an o2 sensor in between hpfp #1 and #2. At times the engine has cut power while at highway speeds causing a hazardous driving condition. 3. Bmw made available a hpfp from a new manufacturer (my #2 hpfp) and subsequently discontinued that part (part # ending in 943) and replaced it with part # ending in 933, which is a re-manufactured hpfp (the pump currently in my car). Each of the three pumps appears to be nearly identical, each has a high failure rate and none seem to address the root of the problem.

Filed Jul 25, 2010 · Fuel system · 20,000 miles · VA

While driving around 65-70mph, I experienced a complete loss of engine power, and had to pull over to the shoulder of the highway. I immediately restarted the vehicle and was left with 50% engine power (limp mode). Luckily the dealer was only a couple miles away, so I immediately drove there for repair, but had this been elsewhere in the region, I would have been stranded. The bmw high pressure fuel pump was replaced and the car has been working well ever after. I was told that this incident accurately reflects what typical high pressure fuel pump (hpfp) failures typically present like.

Filed May 31, 2010 · Transmission · 22,500 miles · CA

Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6) to whom it may concern: the 2008 bmw 335xi I have got engine over heated warming sigh pop out from car computer and the car lose the power right away while I was still driving on the fast lane on the free way which almost got me in accident front the car behind twice. I brought the car in to the dealer and they said there is error record showing my car engine been over heated but they cannot do anything about it that I need to contact bmwna for solution. I did some research about my car does not come with the oil cooler which should original come install in the car since the car has sport package and bmwna been doing retrofit to many other cars already. I mention that while bmwna contact me but they said they cannot do anything about it even with the car did record engine over heated problem unless I over heated the car at the dealership then they will consider fixing the problem. Also since I am the second owner of the vehicle they are not going to od the oil cooler refrofit for me. I ask bmwna they should take care this problem since the car is only 1 and half year old and the problem should be take car by warranty but they said they cannot do anything to fix it. This already have some serious safety issues since they know this car need to be putting oil cooler in order not to get it overheated and lose power while driving. Bmwna did the retrofit for first owner but I guess they do not consider the life of the second as important as the first owner too. Maybe they will state looking at the engine overheated problem like toyota when serious problem start. Please look into this case for some second owner of bmw that bmwna trying to ignore. Thank you [xxx]

Filed May 17, 2009 · Fuel system · 3,400 miles · CA

I was driving on a thoroughfare and suddenly the warning light went off in my car and the power decreased. The warning said "engine malfunction--reduced power." the car basically lost power and I was lucky enough not to get killed as I pulled over to the side of the road with cars careening around me and almost rear ending me. It was terrifying. I looked up this problem online and found that it is common for the 330 series of bmws over the past three years. This problem is due to a succession of high power fuel pumps in the twin engines. Why hasn't this problem been addressed? Does someone need to die? I am a wreck and don't think I can trust bmw. They keep putting in different pumps in other peoples cars from the boards, and they still have the same problem.