Passat (B7) :: 2012 - Engine Whistle Under Hard Acceleration With A/C On?
Jun 15, 2016
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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I ran over a parking stone last summer, ripped the plastic undercarriage a little, but alignment was fine, wasn't that bad, etc. I took the car to the shop last week for a strange whistle/squeal on acceleration and letting off the gas (PCV valve under recall) and they stated that my radiator support was broken, and the radiator was hanging there to the tune of 750 bucks.
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When accelerating I hear a whistle noise from the engine after 4k rpm. The whistle noise becomes higher as the rpm increases.
Stock 08 3.6 22k miles
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So, I picked up my new car today, a 2012 obsidian ISF with 53,000. I'm driving it back from Texas to Georgia in the morning but after driving it for the first 100 miles I notice a pull to the left under hard acceleration and to the right when I let off. I've never driven an F before and I'm coming out of an IS350. I haven't had a chance to check tire pressures yet but I notice the right rear tire is a Dunlop and all other 3 are Bridgestones. Could this be the cause?
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One of my pet peeves about the Prius Plug-in is that the car won't stay in full electric mode under hard acceleration. Any mods to keep the car in pure electric propulsion?
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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 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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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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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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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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Ok so the wife and I were heading home, she was in her 2.0t sedan, I was in my 3.6 4motion wagon. I got stuck behind a slow driver on the highway (doing 50 in a 70 mph zone) so I get in the passing lane and I floor it to pass him. When I get home, my wife tells me she saw a good amount of black/blue smoke coming out my tail pipes when I went to pass the other driver. This is on a engine with 2400 miles.
I take a look, and the chrome exhaust tips I had installed not long ago are now all black, covered in a oily thick residue. These same exhaust tips were on my previous 07 3.6 4motion wagon for 10k miles and was still shiny when I took them off. but after about 1k miles on the 08, they are now all black. I check the oil and it still reads full.
So what could this black smoke and this oily residue on the exhaust tips be caused by? should I be concerned? Engine runs fine with the exception of sometimes stalling when trying to start it after a short stop. (VAG-COM doesn't show any error codes logged.
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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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I recently picked up a 2012 Passat. I love it. Comfortable ride compared to my Volvo, looks amazing from the outside and, well, its a VW - always loved them.
So, my only question is about the acceleration. It tends to be a bit slow on takeoff. Its hard to explain, really, but it creeps a bit and then I find that I need to push relatively hard to get the RPMs up to get the car to accelerate. Ive never had this type of issue in a car before so I thought I would ask to see if this is normal. At first I thought it was maybe a gas saving feature. When I use Sport Mode or Sports Shift it accelerates fine with no issue.
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I just bought an 05' SE V6, with the 3.3 engine. Seemed to run good, had it checked by shop and they said it was a good buy, so i bought it. First day I owned it, took it to toyota dealership and had them do a 90, 000 mi service. did a timing belt, water pump, tranny flush, oil change. I got the car back, and it ran like crap! It would stumble on hard acceleration, and seem to even surge a bit at times. I took it right back? Service rep tried to say I put in diesel or bad gas. I only filled up with chevron premium, which is only gas i ever use. I know how to put gas in my tank!
Any how, they checked timing belt and said it was right, but the timing gear needed to be changed because one tooth looked rounded off. That didn't work either, still stumbled on acceleration, but idled perfect @ 675 rpms. So now the serv. manager gets involved, says he wants me satisfied. they then drained all my gas, then re-fill it. then flushed out all injectors. then put in all new plugs and PCV valve. I did a pressure test of fuel system, said it was good. While they were changing the plugs, they did a complete 6 cylinder compression test and scope analysis, and it came back good, too! I pick it up cause i got to go back. It ran a lot better but still stumbles on hard acceleration on highway. drove 1250 miles back, didn't use a drop of oil.
I did notice when I got 100 miles the temp gauge dropped all the way down to second mark on cold for a little bit, but went back to normal temp and stayed there through the last 1100 miles(that scared me, so i watched temp gauge like a hawk). And the outside temp was @ 62 degrees when the temp dropped at 1200 ft. Elevation...maybe it got stuck and is ok? My CEL has never came on through all this, and it does work, I have made sure of that.
I bought this car from original owner, and they had engine and heads just replaced in 2008 at 44,000 miles at toyota dealership under warranty fot 10,000 dollars. i verified this with that dealership 3 times with 3 different reps at that dealership. old owner said he was having problems with engine stumbling, and took it in twice and dealership said it was ok each time, not throwing any codes and sent him away saying car was ok.
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So i have been hearing a whistle under acceleration for some time. Normally comes at 1/2 to full throttle. I also have had check engine light for a bad o2 sensor for about the same amount of time(2months). Fast forward to last week. finally replaced sensor. Check engine is gone. Open her up a little on and on ramp, Whistle is still there and the CEL comes back. Have it scanned, and it come back load calculation cross check 17551. I need an sticker so i rest the ecu (no light) and drove it like a grandma 50miles to get the sticker. No CEL. Get sticker. Just to make sure i wasn't crazy i gave her some gas on the way out of the inspection lot, and there is the CEL.
In conclusion, Between the whistle, CEL, and the fact that i drove it 50 miles with out the CEL coming back under very light throttle, and i just replaced the MAF with a new Bosch 2 months ago, i am pretty sure it is some kind of vac leak.
I have a new TB gasket in the mail, but my question is, Is there other places where such a vac leak is common in these cars? Other info on car.
UM tune
evoms intake
HPA downpipes (whistle started after these where installed)
Flapper
no res
74k on the clock
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I have a 02 2.0 Jetta with 179k
Have that pesky "whistle under acceleration" when past 1/4 throttle issue. I have been going over the entire engine, checking and cleaning.
-----On the intake tube where the 1 inch case vent and half inch tube meet there is a Flapper/Flow check with a electrical connector directly on top.
Question being, is this a flow sensor? The flapper is distorted and does not function properly.. is this an issue?
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I'm on my second '15 Limited Turbo. Only have 2k miles, but I've noticed an issue with acceleration. When under hard acceleration, especially in 3rd or 4th gear, around 5k RPM the engine starts hesitating. It feels like it runs out of steam. This feeling lasts through beginning of next gear, then the car picks up again. It is actually faster when applying less throttle.
What it could be? It did it since new, I took it to the dealer once, but got some stupid response that it was just rev limiter kicking in (at 5k, right), unfortunately had no time to leave it with them again/show it to them. I also thought it might just go away on it's own, plus I don't usually drive it that hard anyway...
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My wife and I just bought a pre-owned 08 Jeep Grand Cherokee with about 60,000 miles that just started to make a whistle sound on initial acceleration and deceleration when the engine is warm and the transmission is in gear and moving. The sound does not happen with a cold engine, when the transmission is in park, or neutral. A local mechanic checked it for vacuum leaks and didn't find any. He thought it may be a dirty throttle body, so I cleaned that out really well, but the whistle didn't go away (it did make the jeep run a lot smoother!). It's difficult to pinpoint the noise since it only happens when the vehicle is actually moving.
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2007 F-350 4X4 King Ranch... I have the 6.0 diesel. I am on the road to Houston, Tilden and San Antonio TX, and I am noticing a whistle on acceleration. I can change the tone by how hard I push down on the accelerator. I thought it was a radio issue and turned the radio off and got no change. Turned the a/c off, no change. Down hill or coasting, nothing.
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I have read that the IS (or at least some versions of it) pump engine noise into the cabin during hard acceleration. Is this on all models or just F-Sport?
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