Engine Issue Today!!!

[burneo1217]

Hi, well I was driving my b6 A4 1.8TQM today and I stop at the pharmacy. I walked out of the pharmacy, started the car and went in reverse when I started to hear a clunking noise like 2 blades or swords where hitting each other. Obviously I stopped the car and turn it off for a couple of minutes. I tried to start it again and accelerated while in neutral and it seem right. I put it in first and started going forward and it did it again, just this time was a little louder and it felt like I was losing power. I let it rest for another 5 minutes and opened the hood to check for any unplugged/broken hoses or any leaks, but there were none. So I told my bud to start the car and rev it while in neutral. It appeared to be working, but suddenly the noise came back and I noticed it came from the passenger side and then a little smoke came off kind of from the exhaust manifold side. My bud turned the car off. It was not a big cloud of smoke just a little puff. I decided to let it rest for another 10 minutes and try one more time before towing it. I started to think the timing belt went bad, but I opened the cover and the belt seem in one piece. After 10 minutes I turn on the car and it was working normally. I hit 1st then 2nd and 3th around the parking lot for a couple of minutes before hitting the road. It appeared the problem was gone, but I noticed a little constant whistle noise while accelerating. It's kind of like a high pitch wind coming from the engine bay. Also, the turbo does not appear to be working anymore b/c when I used to turn off the engine after driving for more than 5 minutes I was able to hear the turbo blades moving due to inertia. Has this happen to anyone before? Could it be that the turbo went out? Or perhaps the DV? I run the OBD II and it threw out 2 codes P0444 (EVAP Emission Control System Purge Valve C Open) and P0030 (HO2S Bank 1 Sen 1 Heater Circuit) which I have no clue what they mean or how to fix them. From what I've researched the P0030 is a bad front O2 sensor while the P0444 is the little valve near the Air Box. Can anyone provide some advice on how to solve these issues and could any of these 2 be what caused the smoke to come off the engine bay? Thanks everyone, any info is well appreciated.

[widgget]

sound wise i would guess it's the turbo, might have sucked something up......

[burneo1217]

sound wise i would guess it's the turbo, might have sucked something up......

That's what I think it happened since it has around 120K miles on it. Does it usually produce smoke when gone bad? As I said before it was just a little puff not a big cloud of smoke. Also, what's that constant whistle/high pitch noise that I hear while accelerating? It's like it got stuck to the pedal so every time I accelerated I can hear it. Thanks for the reply.

[bananas]

That's what I think it happened since it has around 120K miles on it. Does it usually produce smoke when gone bad? As I said before it was just a little puff not a big cloud of smoke. Also, what's that constant whistle/high pitch noise that I hear while accelerating? It's like it got stuck to the pedal so every time I accelerated I can hear it. Thanks for the reply.

Sounds like your turbo... sorry man!

Yes, you will often see smoke when your turbo seals blow (however, I would expect it to continue to smoke). The whistle is your turbo fins either scraping against the housing, or being chipped/broken off and unbalanced. The clanks you heard initially were probably the fins hitting the housing and breaking into pieces.

[burneo1217]

Sounds like your turbo... sorry man!

Yes, you will often see smoke when your turbo seals blow (however, I would expect it to continue to smoke). The whistle is your turbo fins either scraping against the housing, or being chipped/broken off and unbalanced. The clanks you heard initially were probably the fins hitting the housing and breaking into pieces.

Thanks, I guess I would have to look into a new one. Do the K03's have a slight shaft play or they have none at all? I might be getting a used one. Also, do you know how I can solve the 2 codes I found? Thanks.

[bigbro]

Dentist drill noise = bad turbo

[bananas]

they can have a wee bit of shaft play and still be in spec.
Your one code could be your o2 sensor, the other could be gas cap not tight perhaps?

[AudiA4Turbo22]

i think it might be the tranny's bearings mine does the same exact thing.

[B6Lovin]

but does your tranny make your turbo smoke/whine like a drill? lol.

sorry to hear this man, time to go BAT!

[widgget]

i think it might be the tranny's bearings mine does the same exact thing.

OUCH! your tiptronic is making that noise? thats not good.

[burneo1217]

So turbo it is? How about the DV? Do I need a new one? Thanks.

[AudiA4Turbo22]

OUCH! your tiptronic is making that noise? thats not good.

lots of people on here have that problem, tranny has no codes, shifts fine, just goes ghrlrlrlrlrlrlrl in the mornings or when cold.