Passat (B5) :: Vibration Under Hard Acceleration When Downshifted
Sep 11, 2011
I bought a B5.5 wagon with 145kmi on it last week. It's a 1.8t with a tiptronic transmission.
Last night, when I stepped on the accelerator for the first time when it downshifted I got a nasty vibration until I let off. When just cruising or accelerating at a normal speed there is no vibration at all. It doesn't matter if you're doing 20 mph or 60mph, it's the same vibration when you accelerate hard.
I'm thinking maybe a motor mount or something?
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I have an 06 F150 2wd with the 5.4. Today on my way home I had to cross traffic while getting on the highway and had to get on it a bit. When I gave it the gas the truck down shifted then just fell on it's face until I let off the gas a little then it sped up like normal. It normally runs great but I don't get on it much. I just don't see why It runs great until I try to get a move on.
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Recent axle replacement and now I've noticed that there is some annoying vibration under hard acceleration and at speeds around 65+.
I just read that cheap replacement axles suck. However, I also read that the OEM are hollow and the cheapos are solid. Could only replacing one side cause there to be some sort of imbalance and cause the vibration?
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I have a 99 VW Passat with 2.8 V6, FWD, Automatic tranny and it currently has 94.5K miles. Under semi hard or hard acceleration from either a rolling or standing start, the car vibrates something terrible. Steering wheel has bad vibration and the whole car shakes. If you back off and accelerate very slowly its pretty smoother.
I have had the tires balanced 3 time but the last 2 times the dealer and Sears didn't even move the weights. When cruising at amy steady speed on the highway there is no vibration whatsoever. So I don't think tire balance is the problem. The dealer then put in two brand new half shafts but its no better. I asked them to check the motor mounts but they said they are fine.
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I have what feels like a rotational vibration (front to back) during mid to hard acceleration in 5th gear (60-65+mph) and its driving me crazy trying to figure this out. I can slightly feel it under hard acceleration in 3rd gear as well.
I have tried two different sets of wheels (both after market and stock) with no luck. I am starting to think it is in the motor and not the suspension... Or could it be the trans? What can I check/inspect to get how to tackle this?
Info on the car: 2003 Wagon 1.8T 5sp. 40k miles
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So, something odd happened to me today while driving. I was getting off a highway after about 250 miles of driving, downshifted from 5th to 4th, and when I hit the gas pedal after shifting, nothing. No acceleration. I shift back to 5th. Still nothing. Try revving in neutral, also nothing. I come to a stop on the exit ramp and try to start the car up. It starts up, hits about 1k rpm and stalls. Gas pedal does nothing still. What's up with this? I had it towed to my shop.
Couple tidbits of info: just had the oil changed three days ago. Checked the oil and it seems fine. I have an aftermarket he's unit in the car and lately, it's been a little wonky. When I put use my automatic windows, sometimes the volume will mute for a sec.
My car is a 2006 Mazda Miata base model. 5 speed manual. Power windows but not locks. No traction control. No cruise control. 40,000 miles. Oil changed regularly with full synthetic.
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I recently changed out my stock clutch for a SB Stg.2 endurance clutch. Under hard acceleration my car has developed a serious vibration. I had all four tires road forced balanced but this did nothing. It almost feels as if I have a bent wheel but had no issues prior to the install.
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Vehicle is a 2002 Mitsubishi Lancer with 123,000 miles. During moderate to hard acceleration in a straight line, especially in gears 1 to 3, the front of the car vibrates. The harder I accelerate, the worse the vibration gets. Once I get into 4th gear and get up to 40 MPH, I can put the pedal to the floor and while it will do it, it is very slight. Check engine light is off.
Interestingly, on the way to work there is a 25 MPH cloverleaf and coming out of the cloverleaf onto the highway, it did not do it until the wheels were pointed straight ahead.
Deceleration, even when aggressively downshifting, is vibration-free.
I do not believe it is ignition related - the car idles fine, has plenty of power under hard acceleration, and doesn't do it when going around that cloverleaf. (As a side note, about a year ago a plug wire went bad, leaving one cylinder with no spark. In this case the engine vibrated violently, but was obviously down on power.)
There are no strange noises in the front end. No clicking around corners typical with a failing constant velocity joint, and no mechanical thuds or sqweaks over bumps I'd expect from a failing ball joint or bushing.
I am having some unusual tire wear on the outside edges of the tires, like you would see with under-inflation, but tire pressure is fine. In my mind, this points to bad ball joints.
It still has the original constant velocity joints and axles as well as the original ball joints. The one motor mount I can see looks okay. I'm thinking in order of liklihood (most likely to least likely):
1) bad axle
2) bad ball joints
3) bad motor mount
Anything else I need to check? Wheel bearings? If I do replace the axles, I will replace the front wheel bearings while I'm in there.
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01' Screw 5.4 4wd. Went camping this past weekend and it was the first outing for this truck our TT weighs 6k. When accelerating from a dead stop going straight I'm getting a rumble strip like vibration that last a second. If I take off very easy it doesn't do it. I've seen similar post but no definitive solutions. This truck has less then a 100k on it and so far I've changed the trans filter/fluid rear end oil with modifier and new spark plugs.
Once I'm rolling and hammer down it won't do it. It's more of a annoyance then anything.
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I just brought my6 Speed Automatic Transmission Phaeton V8 in, because under hard acceleration mostly between 3+4 or 5+6 for a short moment a howling noise with vibration into gear selector appears. I was able to demonstrated it to the Technician, but he said there is not much to do because no Fault code will show up and if he ask VW they will say he needs a reference vehicle to replicate it.
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But I have noticed over the past week of driving, whenever the RPMs are around 1000-2000, it is very hard for me to pick up speed, and I can feel a little bit of a rumble/vibration through the steering wheel. So...
If I feather the gas, the RPM increases slightly and you can hear/feel the engine rumble/vibrate. The speed doesn't really increase...
If I hit the gas more than 1/2 way down, turbo kicks in and the car shoots forward.
Is this normal? I find it very hard to add a little bit of acceleration if I feather it, the engine seems to be resisting it, if I hit it any harder, the turbo kicks in around 2500 RPMs. It almost feels as if it is in too high of a gear and the engine has a hard time accelerating a little bit...This is around ~40-60KM/hr
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My wife and i have an 07 2.0t and she used to complain that when the car downshifted (on a ramp or something) the car would kind of jerk. At first i just thought she was a woman and didn't know what she was talking about, until we started taking her car into work I noticed the same thing...but not just on a downshift when the car upshifted it would do it as well.....its basically just a quick little jerk like a buck or something..happens maybe 1 or 2 times a week.
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I have an '04 passat 2.8l with manual tranny. I have noticed on acceleration when it get to approx.2,200-2,300RPM. I can feel a vibration then it goes away around 2,500-2,600RPM. It does this in any gear and at any rate of acceleration. I have noticed that when I have the clutch engaged and rev the engine it is as smooth as can be at that RPM range. I'm thinking it has to be in the drivetrain and not the engine. Also, I have to replace the CV Axles, as they are popping. Could they possibly cause this odd vibration? My car has 96,000mi on it and is very clean and well taken care of.
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So my trans clicks and jerks every time it downshifts into 2nd but that is the only time it does it. When i down shift using the tip shift it doesn't do anything and it all feels normal. What it could be being that it is just when it downshifts into second.
My car is a 2001 v6 4motion.
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B5 Passat wagon coil over installation Vibration happens during acceleration.
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If you have an intake and are under heavier acceleration, do you get any vibrations in the car while getting that growl sound?
I have the intake pipe zip tied so that it is away from the brake lines but I'm trying to figure out if the vibes are coming from just the sound frequency or something or if it's something else.
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I recently I had the cv boots replaced on my 2006 VW Passat 2.0. Since then the front vibrates upon acceleration. I have taken the car to a different mechanic than the one who did the cv boots and he says there may be a broken motor mount. I am skeptical about this diagnosis but now am completely stumped.
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my wife has a 03 wagon 1.8t with a manual, lately she and i have been having problems getting car into second under normal acceleration from a stop.
Clutch is good no slippage problems.
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Recently purchased a flooded 2013 VW Passat TDI and am a newbie. Flushed trans and did a fluid change. Transmission slips on hard acceleration in 2nd and 4th gears and under minimal pull in 6th gear. I then took it to dealership and they told me there was an active code for intermittent low pressure and told me I needed a new mechatronic and that fluid was still somewhat milky. After telling them it was a flood vehicle they told me I needed a new transmission.
Brought it home and drained fluid again and replaced the K-2 solenoid, refilled fluid and test drove. Still slipping the same. Pulled trans today to look at K-2 clutch pack and found what appears to be three pieces of rubber seal (approx 1/64 thick, 1/16 wide, and when putting pieces together appears to be 1 1/2 inside dia. I think one small piece is still missing. Arrived at the 1 1/2" ID by the curvature of remaining pieces) inside the inner hub. I have inspected most of the pieces and cannot come up with where these have come from. I believe they have to be from somewhere that seals up the K-2 piston.
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My 2002 1.8L 60K miles is making a loud woooshhh noise during hard acceleration. The noise seems to be coming from the engine, but it might be coming from under the car. I have a manual tranny, and this happens in all gears. There is no noise during idle, and no noise during mild acceleration.
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Currently having a possible 'issue' with my 2012 Passat 3.6. Every time I perform a hard acceleration, or any time the RPM's exceed 4,400, I can hear a whistle that is rpm-based coming from the engine bay. It is quite notable from outside as well, and ONLY occurs when the A/C is ON. Is this something I should be concerned about? I never hear it when hard accelerating without the A/C on. It is a high pitch whistle that increases in pitch the higher RPM's that are reached. Sounds almost exactly like a turbo, but as soon as I change gears in the acceleration, the pitch instantly drops back down but still matching (pitch-wise) rpms in the next gear and continues again.
It's loud enough to hear it in the cabin, but not over, say, 6 of volume on the radio.
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