Bmw - 650i :: 2006 - Hesitates / Loses Power Under Acceleration
Feb 9, 2013
My 2006 650i loses power under moderate to heavy acceleration. If I accelerate from anywhere over 2500rpm, it will accelerate then the engine rpm will drop suddenly by 500-1500rpm, and then will continue to accelerate again from this lower rpm. It only seems to happen once each time I punch the pedal. The car does not throw any codes. I have had the dealer and Dinan Performance examine the problem and they have not been able to isolate the problem. They have run vacuum leakage tests, fuel pressure tests, and may have checked the throttle position sensor. This really takes the fun out of driving this car. I have about 50K miles on it.
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I have a 2006 Ford Escape that's turning into a mystery. Over the last few months the warning lights have been reporting issues with the overdrive. I've taken it to the mechanic who hasn't been able to identify the issue.
He's cleared the issues from the ECU, and the car doesn't complain for about 2 weeks, then it reports a different issue related to the overdrive (eg: OD or transmission).
Possibly related, the car occasionally loses power on acceleration. When taking off from a stop, it'll be really underpowered while getting up to speed. This only happens occasionally.
Is it a part failure, or could it be electrical or related to the sensors?
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I have a 1998 Honda Civic LX that was converted from automatic to 5 speed. It hesitates while I drive, only sometimes. Normally it does it when I am pulling off from a stopped position or when turning the corner and then accelerating. I will have my foot on the gas, but it won't gain speed unless I hold in the clutch and rev up the engine then it will pick up speed and go fine. Then sometimes it also hiccups while driving without accelerating, I can feel the car jerk a few times and start to loose power.
I will need to down shift to third, or most often 2nd gear and rev it again to gain power and to pick back up speed. Things done to it since i bought it only a few months ago by the person (who is a mechanic) I bought it from: oil change, fuel filter changed, Lucas gas treatment added (by me), new exhaust system installed, starter replaced. I am nervous that it may be rear-ended, or t-boned in heavy traffic. Should i have the fuel filter checked?
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So the 04 is rolling down the road when the cluster gauges ping, the truck loses power/acceleration but the radio never goes out. Have a new alternator and batteries passed a check. It has done it three times. We are 1100 miles from home. OBD and cigarette lighter fuse was blown as well.
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I have a 2003 Honda Accord V6 that has some acceleration hesitation and general jerkiness, usually noticeable when the car has been sitting for a long period of time (overnight). The symptoms seem to dissipate after 5 - 10 minutes of driving.
When I begin accelerating, the car feels like it hesitates when shifting from 1st to 2nd gear. If I let off the gas a bit, then the car jerks a bit.
I'm sure it's not the transmission, because the dealer said the fluid and everything looks fine. Additionally, I have another Accord (2000) that does have a failing transmission and the symptoms on that one are very different from this 2003.
A couple of months ago, I was getting a CEL and had a friend of mine read the code with his OBD tool. It indicated that Bank 1 Sensor 1 was bad. I replaced it with a Denso. I think the problem got better at that point, but has "worsened" again over the past month or so.
Any clues what this might be? Things I can try? Ways to narrow down the issue?
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I have a 2004 Prius, ~150k miles. At about 80k I replaced the inverter coolant pump as a preventative measure.
Recently, the car has shown an intermittent lack of power, and abnormally sluggish acceleration, which seems similar to what I've heard about the failsafe mode of an overheating inverter, except no warning lights appear. We have had some hot days this summer in SLC, Utah (100+ deg). It's a sporatic issue that seems much worse on hot days. The weather has been hot, but we've had hot days in past years and not had this problem.
Yesterday, the car showed the worst ever such behavior and was nearly crippled for my wife (why do these things always happen when the wife is driving alone?). She was returning home from a ~ 1hr appointment, where the car was parked in the sun, ambient air temp was ~103 deg. The car was very sluggish and ICE was revving much higher than normal. The battery fan that vents next to the rear passenger-side door was running at the higher speed than she's ever heard it before. I asked her at the time about the battery level, and the display showed two bars, even though she was going mostly downhill. A/C seemed to be working, but she turned it off. She was able to limp home. It did seem that when the battery charged a bit, performance improved somewhat.
After I got home a few hours later that evening, (temp ~90-95 deg), I took it for a spin and it seemed fine. I'm pretty sure I detected a slight hiccup in power one of the times I punched it, but nothing drastic. She drove it this morning (84 deg ambient, ~75 deg overnight low) and it seemed normal, except that she could hear the battery fan (we almost never hear it running), but it was much slower than yesterday.
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I have a 2004 f350 6.0 it has 73000 miles on it. I've had the truck for about a month and its developed a slight stumble, hesitation. It does it during idle and acceleration, if I give it more throttle it smooths out. The cel is not on and there are no stored codes.It did this a few days after i bought it,i noticed the map sensor was broke in half so i replaced that and it smoothed out.But it came back. Exhaust is clean no white or black smoke at all.
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My car loses power when it's to hot outside. When pressing the gas from a complete stop it can barely get going and then within a few seconds the power kicks in and it goes. One summer I was away for 10 days, when I came back, it started, then stalled and died. i took it in, the dealer said the main computer chip had re-scrambled it's self. this has happened twice, the dealer could not give me an answer as to why, but they were happy to take my $260 to fix it. 2006 Ford Escape Hybrid...
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I have a 2006 Nissan Murano with 122,000 miles on it. It's been a good car, but recently it has had a few episodes of losing power. Here's an example:
I had been driving the car here and there all day, and in the afternoon I swung by my mom's house to pick her up. When she got in the car (I had just been idling while waiting), I went to make a U-turn and the car outright died. I started it right back up and was able to drive to the end of the block before it lost power. It didn't die this time -- the engine was still on -- but all my electrical components went out -- radio, dashboard lights, AC -- and I couldn't get it to go more than 20 mph. That was flooring it. It wasn't giving me a high-pitched whine, just a low hum like it was trying really hard to go but couldn't. I turned it around and barely made it back up the hill to my mom's to park it. It just had no get-up-and-go. An hour or so later my dad came home and checked it out and of course it was fine. Started right up, drove fine.
This has happened twice since, both times I was driving on the freeway when I felt the loss of get-up-and-go and saw the electrical components go out. These times it only lasted maybe 10 seconds, after which it just came back to life in the middle of driving and drove fine the rest of the day.
It makes me think there must be some sort of loose connection somewhere? I'm frustrated by the issue because it's not repeatable. So when I took it to my mechanic, they said they couldn't find anything wrong. They hooked it up to a code reader and nothing came up, and they drove it around and around and it was fine. The idea that it could maybe strand me on the side of the road (I drive my kids around all day) scares me, so I've swapped cars with my husband for the time being. But I want my Murano back!
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2006' screw, 5.4L, 116K miles ... The truck looses power at highway speeds to the point that I need to pull off of the road. When this happens the check engine light is on and the truck is still running but will not accelerate, is it possible the computer is going into limp mode and if so what would cause this?
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Driving down the road today and all of a sudden the car loses power, starts vibrating and the Check VSC and Check Engine lights came on. I pulled off the highway and got the car stopped and engine shut off. I let it sit for about 5 minutes and started it up and all warning lights went off and I was able to drive the car home with no adverse effects. Seems to be running normal now. Searched the archives and saw numerous posts about a loose gas cap, but this was something far more serious.
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I have a 2006 f250 with a 6.0 and I am having some issues with a hesitation and lose of power. The hesitation is worse when under load and other times is not so bad. Also it is non existent at higher RPMs (2500 and up). I changed the egr valve 2 months ago and it seemed to fix the issue (95%) but now it is running bad again. I used Hot Shot oil additive 2,500 miles ago and I changed the fuel filters and changed to 5w 40 Rotella synthetic oil, nothing has changed. I had the FICM changed a year ago with new software updates, still didn't fix it 100%.
Now I am having a "hard" start issue. It takes a bit for the truck to turn over. My batteries are 12 months old and I just replaced the alternator so I am not sure how to proceed.
I did just buy a Scangauge II and I am still figuring out how to use it. It says there is no codes.
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I have a 2006 F-250 4x4 with no cat, and no egr but the valve is still connected. It has about 146,000 miles. Just recently when warm, it has a slight miss every once and a while when stopped and in gear. Just a slight drop in RPM then recovery. Its mainly used on the highway and 99% of the time I set the cruise and its smooth as silk. Every once and a while I feel it stumble once or twice, recover and it is fine for the next 80 miles with no issue. It started as once every few trips but now It seems to be happening at least once every other. I use Motorcraft filters (maybe 6K on the fuel filters) and rotella oil. My scangaugeII shows no codes and no Injector pressure issue (1200-1400 at 75 mph depending on grade) and the FICM voltage stays between 48.5v and 49.0V. What should I check?
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My 2001 manual transmission Honda Civic lost acceleration and died a few weeks ago. Was pressing the gas all the way down and it just wouldn't go. I was able to get the ac/radio to turn on but couldn't get it restarted. After 5 minutes, I got it started and was able to get it through the intersection into a parking lot before it died again. It jerked and made loud popping noises and never would go more than 5 mph the whole time. Had it towed to the shop. They tried to start the car the next morning and did so with no problems. The check engine light showed a timing issue. Later that day, they restarted and no check engine light and no problems, but we knew the timing belt was way overdue (165000 miles, never replaced) so we all hoped I got a lucky warning and they replaced that and sent me on my way.
Two weeks later it did the same thing and died again. This time it was close enough to home to restart it and get it home. It jerked and popped and then at one point it was as if a clog got cleared and I shot off down the street, because I had the pedal to the floor. Then it started decelerating again but I got it home-smelled a slight burning smell. Waited until the next morning, suspecting it would be fine, and drove it to the shop myself with no problems. This time the codes showed it needed a new O2 sensor and a cam shaft sensor. They replaced those, feeling certain that must have been the issue.
Drove it home with no problem, went to leave the house that night and as soon as I got out of the driveway, it started doing it again. This time, though, the car did not die and I was able to turn it around and get it back into the driveway. The shop sent a tow truck and they've had it since, but can't get the car to replicate the problem and there is nothing showing up as being wrong (and I swear I'm not imagining this). Have been assured that it's not the transmission, not the fuel filter. They think it might be something electrical but can't figure it out.
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My daughter has a 2006 Jetta and has recently experienced issues with acceleration. Merging on expressways and all of a sudden she can't seem to pick up speed and has to get over in the right lane because she is going so slow.
Been to 2 different shops, A neighborhood shop couldn't find anything wrong and neither can the Volkswagen dealer. No Error codes on the computer accept Knock Sensor. She's afraid to drive the car!
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I just bought an 05 Camry with 40k miles. Runs great. Decided I'd have a tranny flush and coolant flush done. Oil was done recently. A couple hundred miles later and today I've got a noticeable hesitation when accelerating. It's not a herky jerky stutter, but a smooth, consistent like a loss of power like I'm quickly letting my foot off and back on the accelerator. Doesn't seem to do it when not in gear, just under acceleration. Checked trsnny fluid and it's ok and full.
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Every time I reach about 64 mph, the car begins to sputter spontaneously. As I give constant gas to keep it at that speed, the car hesitates, as if the gas isn't combusting consistently. This sputter also happens sometimes when I'm simply accelerating for example from a stop sign, however, it is CONSISTENTLY doing it at about 64 mph. I can go faster and the sputtering seems to lessen (at 70+mph, as long as I'm accelerating). Took to mechanic, he couldn't figure it out, although they suggest getting yet another computer.I've replaced:Distributor capDistributorSpark plugsComputer (from ebay, remanufactured)
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Today leaving work my 2009 Mazda Tribute suddenly lost all acceleration after pulling out of the parking lot. Didn't die but was running like it was about to. Pressing the gas pedal had no effect at all. When I turned the car off and started it again, it did start -- with trouble but it started. It ran OK for a few miles but suddenly lost acceleration again. Same thing. The car ran but the gas pedal had no effect. Shutting off and restarting got it going. In the 30 mile trip home it did it a total of 3 times. Each time shutting off and restarting. When I was able to accelerate, it seemed to accelerate OK, but at the same time felt weak and .... laggy. That last part could just be in my head though. Just wondering where to start to fix this.
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I have a 97 Pontiac Grand Am w 3.1 engine that is my son's college car. We recently rebuilt the original engine and put it in after having a 99 monte carlo 3.1 engine in it's place and it had a head gasket problem as well. Just before we switched engines my son was noticing that it would kind of hesitate under acceleration from about 1500 rpm to around 2000 rpm especially when it was wanting to up shift. I figured it would resolve itself with the engine change. It did not. It has now gradually gotten worse.
My son drove it to Liberal about 4 hours away and he stated it was worse and especially when you would get into overdrive it would drop down to around 2000 rpm then start sputtering or loading up or just being dead then would down shift to 3rd and try to clean itself out and speed up and then up shift to OD and do the same cycle again. I drove it back and kept it in 3rd gear and seemed to run fine at 2500 or higher. I also had to go thru low, and 2 and feather it up from a standing start. It idles fine as well.
I thought it might be like one of the saturns I had which ended up having a plugged Catalytic converter and a bad coolant temp sensor. This morning I did a test hole and it made no difference. I tried a different coil pack/ESC and it made no difference. I cleaned the MAF sensor and no change. The fuel pressure is 41 then 38 when idling then 43 when remove the fuel pressure regulator vacuum hose. I also changed the fuel filter.
I was kind of ruling out the tps, iac, and egr and water temp sensor as those were part of the other engine when I put the other engine in so they are different and I am assuming they must be good. Plugs and plug wires are new as well. It has not thrown any codes. I did notice that when it is just in park and you press on the accelerator to rev it up it only will rev to 3500 rpm and will shut down like a rev limiter is kicking in and just do a kind of surge thing. My saturn did that too and it was a plugged cat and when I knocked the biskit out of the manifold on that car it stopped. I have already got that ruled out though.
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I love my 01 Elantra great gas mileage and it just zips around with no problems. Recently had an issue where i was depressing the gas pedal but it just decelerated and never was able to get above about 20mph. I pulled over, tapped on a few parts in the engine and restarted the car... the problem went away. It has some hesitaion when I accelerate. The check engine does not come on ever not even when I start the car . . . What the problem might be ? MAF, modules, ECM.... ?
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My car has the wavy acceleration feel and sometimes hesitates a bit. It is way worse when the a/c is on. I wonder if this is a octane or sparkplug issue. On my old cruze 1.4t the gap was wrong from the factory. It came with all four gapped under .022 but the manual called for .028. Everyone gapped to .035 with great results. Not checked the sparkplugs yet?
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