Passat (B5) :: Low Boost Code And Strange Noise
Sep 4, 2011
I currently have the P0299 code for underboosting. I am pretty certain that i need to replace my wastegate actuator because i can hear it rattling on deceleration.
My plans are to replace it at the same time I replace the timing belt since it would be a decent opportunity to remove the turbo to change the WG actuator. However, I still can't figure something out. When I am starting to accelerate from a stop in 1st gear (and only 1st gear), there is a loud screech, lasting only a second, coupled at the same time by a quick and noticeable loss of power; as if boost was released. I typically shift out of 1st within 2500-3700ish rpm, if that makes any difference.
From what I have researched, this sounds like the turbine making contact with the housing. I may be wrong, but that does not add up to me because I am only experiencing this problem in 1st gear. We are talking about a 2003 B5.5, Engine Code AWM. No mods, 100% stock.
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Ok, I just bought this car a month ago, and I get this code coming up intermittently. I reset the code, and it will come back after driving a while. 2002 passat 1.8t 5 speed. It seems like it comes back when I roll backwards a little bit (like from a standing start on an incline) right before taking off. Could this be a leaky throttle body to inter cooler hose? Seems like the engine might move more while taking off from a backwards rolling start due to the torque. Also, I hear a lot of noise while on boost coming from the drivers front corner of the car, although it doesn't throw a code while on boost.
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I lost boost, went from being chipped at 16psi to 7-8 with a check engine code and a high pitch noise. Now is the secondary air pump connected to the turbo in any way. It just happened and I'm working on getting the code read. Just curious if my pump is just bad, what im figuring.
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I recently had issues with P1320 code, and after replacing a bad ignition coil by a local auto mechanic, the CEL went away. While changing the one bad ignition coil, he also changed all the spark plugs.
However, after driving for about 1000 miles, I started hearing this noise which is persistent, and I'm hesitant to drive it further without knowing if driving in this condition would cause any further damage.
What could be going wrong here for this noise. I tried to attach the video I captured, but couldn't.
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I recently noticed that my Golf R was making a strange high pitched whine and it seemed like there was no boost. I took my car to the dealer, and it turns out that part of the CAI broke off (a mounting component) and made its way into the turbo, effectively destroying it.
My dealer was initially intending to cover the turbo under warranty (prior to investigation), but now that it is clear that a failure in the CAI caused the issue, they cannot (obviously) cover it under VW warranty. Unitronic CAI failure led to turbo failure.
The serviced manager did some research prior to getting back with me, and was somewhat puzzled since the Unitronic CAI displayed on their website looked slightly different from mine in that the component that failed was not there. The service manager called Unitronic and learned that the failed component was a known issue (it had apparently failed before), and thus they modified the design - hence the picture of the revised version did not match the older version that was installed on my Golf R. The Unitronic rep offered to replace the CAI - but did not mention anything about the failed turbo (when he spoke to the service manager).
I found the following thread which illustrates that this was a known issue: [URL] .... I just wish I had found out about this before it failed.
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Sudden power loss experienced. CEL (Check Engine Light came on) and Glow Plug Light was flashing. Power loss is severe so really can't drive it anywhere. Turbo Failed at 5500 miles.
Mechanic quote: "Found code P0299 for turbo power under boost. Removed upper engine cover and intake hose. Checked turbo shaft and found play near intake side of turbo. Removed lower engine shield and lower hose to intercooler. Checked for metal. Contacted VW and created VTA. Instructed by VW to replace turbo. Did."
Sounds like service manager abbreviated when entering into the computer. In any case a shame that this car was in the shop for more than a week while the dilly dallied and waited for a turbo to be shipped in.
Some earlier turbo-fail threads from last summer stated dealer told them "bad batch" of turbos was being experienced by VW. Believable, particularly if they're banged out in China? Let's all hope it was a bad batch.
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I have a 02 Jetta TDI with 186k miles. Couple weeks ago it all of a sudden started making boost noise when I was driving to work and then on the way back I was getting almost no power. Like over boost and under boost issue, so I assumed it was the MAP sensor. I got busy next couple weeks and then tried to start the car but now the car is not starting.
Completely charged the battery so its not the battery. Looked online and it seemed like it could be the 109 relay for the fuel pump. I pulled the back seat off and I can't hear the fuel pump prime up. I got a new relay from auto zone and put it in, still same thing. I don't want to have to replace the fuel pump only to find out its not the fuel pump. I ran the code and I'm getting the P1556 code (charge pressure control negative deviation).
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At work we have a 04 Passat 4motion wagon that has a strange noise coming from behind the dash. The best way I can describe the noise is like computer hard drive loading. It happens continuously even when the radio/cd player is on.
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Lately or maybe I never really paid attention to it, there's this strange noise at idle. 2009 passat w/ 35k mi(auto trans). Noise sounds like a small dog growling or a swarm of bees. Doesn't always make the noise but sometimes when I come to a stop light or pull into my driveway I can hear. Sometimes the noise is constant or it cuts in and out. Pooped the hood and it sounds like it is between the back of the engine and fire wall.
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Passat 2002 1.9 TDI 74KW strange engine noise
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Our car has been throwing a low boost code. We replaced the dv valve, pcv was just replaced but code still comes up. It's been making this noise that has arised with the code. It will do it down hill from 1500 to 2400. Just a constant rattle.
What do we do from here? Fix rod? New wastegate? New turbo?
[URL]......
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I have a 2014 passat 1.8T with 2500 miles. I noticed that i am starting to hear a noise mainly when coming to a stop. Sounds suspension related , sounds like a suspension spring sound - kind of hard to explain.Only 2500 miles and strange noises already?
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I have a 2000 vw 2.8 v6.
I got it back in February and it ran great up until now. A couple months ago while driving home my cel started flashing and right when the light came on I could immediately feel an immense loss in power and when I got to a red light it would shake like mofo. Gettin up to speed was suddenly a huge problem and the car would make a strange noise and I could smell a strong odor of gas and slight oil. I have a valve cover gasket leak that I paid 300 bucks to replace but after a week I realized it's still leaking oil so that 300 bucks just went out the window. The sluggish performance and cel went away the next time I drove the car and it ran awesome for over a month till one day while I was on my way home from grabbing some lunch it all of a sudden started happening again. Sluggish performance, smell of gas and slight oil, wouldn't get up to speed.
I brought it to my local vw dealership to have it looked at yesterday figuring that they'd be able to tell me exactly what was going wrong. I got a call early this morning saying that the oil leak in my valve covers are causing my coil pack to short out and foul my plugs and wires and then told me it was going to cost 1,700 bucks with all the parts and labor. I'm not very mechanically inclined when it comes to vehicles so it's not like I can do the work myself but my main question is, how can the oil cause the coil pack to short out seeing that oil is not conductive and some cars actually use oil to cool the packs down. Is that a legitimate diagnosis or is the dealership mechanic Actually right or is he just getting creative trying to squeeze some money out of me.
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When I shift under heavy boost (stage 1), there is a very distinct noise, imagine sucking in super fast, to the point where it kind of mid pitch moans, and speed it up to only a bit of a second. Its very hard to explain! is this a normal noise? or should I be removing the DV asap?
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Having trouble with this code. Replaced stock air filter with aFe filter 10,000 miles ago. 20,000 on truck. Threw code sunday dealer replaced filter with stock. said code may come back. which it did 5 miles later.
Edge CTS says max boost is at 22 psi. Is this something i will live with or indication of something else?
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I started to notice this before I lowered the car but the car felt similar to when you hit those tar strips in the summer. It would just pull one way or the other.
I replaced sway bar end links, tie rod ends, one side control arm bushing, and got it aligned.
I figured that one of these was worn but it did not fix the problem.
Now when I accelerate hard at speed the car pulls to the left even with the wheel totally straight and it pulls to the right when I let off the gas.
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I park my car in parking lot. leave it for 8 hrs come back and inside windows are completely fogged up. None of the other cars around me are like this. Happens a lot.
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I disconnected the red wastegate hose in order to address a low boost high EGT issue. This seemed to fix the boost / EGT issue for the most part, but now I get this P1249 code. The first time I got it I saw boost at about 20 PSI. I figured I would try to keep the boost below 20 in an attempt to prevent the code.
I managed to capture some log info when throwing the code. The highest boost reading I saw was 19.58. Pretty close to twenty but I question if I even should be getting this code at this level of boost?
Here's a chart with the boost info. Yes I still have a very bouncy EBP and hope to track that down at some point as well....
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My 2003 V6 has an odd smell coming from under the hood. Doesn't smell like gas or oil. It kinda smells like burning plastic and it may be coming from the area around the coolant reservoir.
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I have a strange clicking sound (intermittent) near or behind the glovebox...warranty is almost up - worth a trip to the dealer?
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I'm having a little trouble with my 05 Excursion 6.0L .... We took off camping the other day pulling our 30' camper and the engine light came on pretty much as soon as we hit the highways. I checked my Dash boss and it came up as P0299 under boost condition. The truck never skipped a beat. The boost gauge never dropped and it seemed to have lots of power. Actually I've noticed too much boost while pulling. It's climbed up to 36psi before and was still climbing when I backed off the throttle. I'm thinking the turbo is fine but not sure what to check next.
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