Golf IV / Jetta IV :: 2005 TDI Has Little Acceleration - At 3k Rpm It Doesn't Pick Up Speed Anymore

For the past month or so my 05 TDI Jetta has been having some acceleration issues. It starts good and when i start driving it goes ok (but not as good as it should) but when the car gets close to 3k rpm it doesn't pick up speed anymore. I recently had it taken into a shop where they fixed other issues but they didn't fix this one. also sometimes it will accelerate faster than it did before it had issues but then it just stops picking up seed. I have looked up this issue but haven't found a cause for it.

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Jetta - Volkswagen :: 2000 - Delay In Acceleration?

Our manual transmission 2000 Jetta's acceleration has begun acting weird. You raise the clutch and give it some gas, but the engine revs and there is a delay before it "catches" and begins to propel the car. What's going on?

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Jetta - Volkswagen :: 2001 - Jerky Acceleration In Lower Gears

Been having an issue with my 01 Wolfsburg VW Jetta 1.8T.

Whenever I'm accelerating (most noticeable in lower gears), it seems like the turbo can't keep up. Used to sound like a nice clean consistent whooooosh spooling up, but now its more like brrrr......brrrrr......brrrrr.....

Don't know how else to describe it. Seems to start and stop frequently. Will try getting a video clip of this tomorrow.

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Jetta - Volkswagen :: 2013 - Acceleration Lag / Gear Shifting Not Smooth

My wife and I recently purchased a 2013 Jetta and have noticed some abnormal lag when accelerating. It's an automatic transmission and the gear shifts aren't as smooth as they should be. I have read that it is possibly related to the drive by wire system and may just be an inherent result of that system.

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Jetta - Volkswagen :: 2003 GLS Lagging On Acceleration Right Around The RPMs When Shifting

I have an automatic 2003 Volkswagen Jetta GLS with 138,000 miles on it. I bought her four years ago with 91,000 miles. Right after I got her, I noticed that she'll jump a little when when she's cold (i.e. ease on the gas for the first few miles until she drives more smoothly). Looking around the web, this seems to be fairly common and most forums say that it shouldn't be a cause for any alarm.

More recently though, she's started to lag when I accelerate right around the RPMs where she should be shifting. For example, increase to about 3000 RPM, then it feels like a second of free fall, then she'll catch up and be just fine.

I took her into a shop to get it looked at about 3 weeks ago - initial thought had been maybe an issue with the transmission fluid (did a flush back in 2014 / 110k miles). The mechanic refused to do the flush until I had the catalytic converter and downstream O2 sensor replaced. The previous owner had installed a modification to the sensor and the wires had got too close to the converter and melted.

We noticed the check engine light about a year ago and had it looked at, but the mechanic then said it wasn't a huge issue and was really only going to affect our gas mileage so we held off. Since this mechanic was fairly certain that this was causing our issue, we went ahead and had the repairs made. No luck. Haven't had a chance to take her back to the shop, but I figured I'd ask to see if we were at least on the right track.

Second issue. My wife and I share this car, and her commute is significantly further than mine. She says that four times over the past two months the car has shut itself off when it comes to a stop. Not a common occurrence given the amount of driving we do, but enough to be concerning.

I've had regular oil changes and kept up with the routine maintenance over the past four years (new spark plugs, air filters, etc.). Just got a fuel system flush with the catalytic converter repair three weeks ago. Haven't changed the battery since I bought her, but every time we get the oil changed they check it and say it's good.

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Jetta - Volkswagen :: 1997 - Pulling Very Hard To Right And Makes Squealing Sound When Get Up To Speed

Yesterday, i bumped into the curb as I got home, and today when I went to work the car is pulling very hard to the right, and makes a squeeling sound when I get up to speed. The ball joint looks bad, but can that cause this problem?

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Jetta - Volkswagen :: 2001 - Suddenly Slow Down And Stopped While Driving On High Speed

I was driving on the highway in my 2001 jetta (332000 km) on the cruise control yesterday and suddenly it just started slowing down and stopped. Putting my feet in the gas did nothing . Before stopping completely the battery light came on. After won't start anymore, just making a sound like it is trying but turn in the butter. To be honest the check engine has been on for a while but we are pretty sure that is the glow plugs because it is a recurrent problem... Nothing else light up and there was no sound or smoke.

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Jetta - Volkswagen :: 2009 - ABS Alarm Lights And Sounds Coming On While Driving At Speed In A Curve And Braking

I have a 2009 VW JETTA. I have experienced my ABS alarm lights and sounds coming on in the past few months, twice while driving at speed in a curve and braking. Stopping the vehicle, turning it off and back on clears the errors, checking with my ODBII reader once I get home finds no errors.

Where this has occurred is a rather odd exit off of I-70 to Wadsworth Blvd., you are exiting at pretty good speed from the Interstate, curving to the right, then to the left and pretty much braking the entire time, and going into a slight bank. You can feel the increase in G's as you make this exit. I have also driven the exit and greatly reduced my speed and level of braking and the issue with the ABS does not occur. My local dealer is at a loss to find or explain what is occurring.

My questions are, is there something seriously wrong with my braking system (ABS), if there is, what is it, if there isn't, why does it do this only under the conditions that it is occurring?

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Explorer :: 2002 Ford XLS Making Buckling Noise Whenever Start To Pick Up Speed

I own a 2002 Ford Explorer and I need diagnosing a problem. Whenever I start to pick up speed it starts to buckle and I always have the 4x4 on auto and it still buckles.

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Lexus GX 2004-09 :: 2003 GX470 Normal Drive At 2Krpm But Slow To Pick Up Speed

I would like to post this performance issue on my 2003 GX470_79Kmiles which happened on the freeway yesterday. The sequence:

1) During start and at idle/stationary, the rpm shoot to 1100rpm and stayed there for a while, i would think that it was normal since the engine was still cold.

2) Drove to the freeway, I noticed that speed is very slow to pick up. My normal driving experience was that at close/equal to 2000rpm, the speed usually at around 70-75mph. But there was a considerable reduction of speed at around 60mph at almost more than 2000rpm, plus a buzzing engine noise. I tried to really rev-up the engine but very sluggish to pick up the speed not even close to 70mph.

3) Drove the car to lexus shop this morning, top speed of 60 to 65mph and tried to rev it up to plus 2000rpm to pick up speed, but the engine noise is very abnormal.

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Volkswagen :: 2005 Golf Loses Power / Runs Bad In The Heat

I have a 2005 VW Golf GL, automatic tranny, 2.0L 4-cyl that has some issues during long drives in hot weather. The 1st incident occurred when I was driving on the interstate in AZ w/the outside air temp around 100 degrees. It was a flat, desolate stretch of road and I had cruise control engaged as well as the A/C turned on. Suddenly it was as if someone had let off the gas pedal, as the car began quickly slowing down from 70 or 75 to maybe 40 or so. I turned off the cruise control & tried to increase back up to highway speed manually, but there was a long lag time before the engine kicked up again. I got it back up to full speed, then moments later it would kick down again unexpectedly as if I had taken my foot off the gas even though I hadn't (and I was still not climbing any hills). The temp gauge was still normal, but I turned off the A/C just in case this was making an unnecessary drain on the engine. Still the car would behave in the same way. I took the next exit, let it rest a bit, then limped along @ a slow speed on the frontage road until the next town. Suspecting it was the MAF sensor, I had it cleaned @ a repair shop before heading back home. It ran normal for a little while during the drive back, but then the same issue.

Back in town, I replaced the whole MAF sensor, since I was told just cleaning it was a temp fix. By this time the outside air temp was cooler, & short drives to/from work went fine. However, the next time I tried taking the car on a long hot drive (from SoCal into NV), the same issue happened again! So maybe it wasn't the MAF sensor afterall (unless the replacement was faulty?). Nevertheless, I took a wet washcloth & wrapped it around the sensor, & this seemed to do the trick to get me back home again. For now I am no longer going to risk taking this car on long hot trips until I can figure out what's wrong w/it & how to fix it. I do plan to take it to a mechanic but wanted to see first if this rings any bells for people on this forum.....??

2nd, (possibly related?) problem:

Today as I was coming home, the engine stalled when I tried to take off when the light turned green @ an intersection. I limped it to the other side, pulled over, & tried starting it up again. It started right away & then ran fine. I'd been low on gas but not so low that it should be an issue. I drove the rest of the way (on a highway) to a gas station (several miles) w/o A/C, no problem. I filled it up, did the washcloth trick once again in case that was related to the problem @ all, & drove the rest of the way home just fine. Battery is relatively new (about 2 yrs.) & alternator tested fine. Did not see any corrosion on a recent check of the battery posts. Outside air temp warm today, but not that bad...only mid-80s. Temp gauge read normal.

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Civic - Honda :: Loses Acceleration, Not The Transmission

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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Bmw - 650i :: 2006 - Hesitates / Loses Power Under Acceleration

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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Mazda - Tribute :: 2009 - Suddenly Loses Acceleration While Driving

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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Prius (2004-09) :: Loses Power In Heat - Sluggish Acceleration

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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Golf/GTI VI :: Motor Loses Power Just At Normal Speed Sometimes On Freeway

My 03 gti vr6 has issues... This only happens sometimes but if I am on the freeway even just at normal speed sometimes the motor loses power not electrical just the motor it will die then kinda sputter its way back to life. I may add that I have APR software installed.

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Brakes - Fuel-economy :: 1998 Chevrolet Prizm - Loses Acceleration While Driving?

While driving my 1998 Chevy Prizm, my car lost the ability to accelerate but the car never lost power. I managed to pull over and let the car run for a bit before trying to accelerate again..the car only got up to 30 mph and wouldn't go any faster.....after a couple of hours the car run okay. What could be going on? I got new spark plugs, oil change, and an idle air control valve........

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Ford Ranger / B-Series :: 1989 V6 - Engine Hesitation - Loses Speed When Kick Down

My 1989 Ford Ranger 2,9 V6 is acting up like crazy (engine hesitation) after kick down (it has an automatic transmission).

It can run like a charm for days and days and for the longest drives, but if I do a kick down it will start acting up (while both cruising or idling). This is making it almost impossible to drive as it looses speed. Only way to accelerate again is to do another kick down (then it will accelerate smoothly for as long as I keep my foot down), but that is really no solution as it will accelerate way past the speed limits and the mpg is horrible going up and down like that.

A couple of times this problem has seemed to solved itself after a while of engine hesitation but normally it would be acting up for the whole drive. On the other hand it will be okay again the next time I take it out for a drive.

Diagnostics: It has nothing to do with the temperature of the motor as this will happen after a kick down on both a cold or hot engine.

Simple solution so far: Avoid kick down!

What I have done so far: I have changed the spark plugs, the plug wires, the distributor rotor and the distributor cap with no luck.

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Ford Escape / Hybrid :: 2006 - Overdrive Light Warning And Occasionally Loses Power On Acceleration

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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