Hello,
Newbie posting here, I was hoping you guys might be able to offer up a little insight into an issue that just popped up on my ’01 TT. I had planned to take it to the shop, but was interested to hear if anyone has had this same is on theirs.



I noticed quite a loud sound coming from the engine bay about two weeks ago. The sound is hard to explain, I was under the assumption it was a worn belt at first. I always start the car and let it idle for a bit before pulling it out, I heard this sound when I pulled up to a traffic light about a mile away. I now hear it when I start the car and when I come to a complete stop after driving for 1-8 miles, then it goes away. The car is throwing codes 1130 and 1131. I’m thinking it has something to do with the pump, but was has me stumped is I can hear it running after the noise ceases when I first start it. I replaced two of these pumps on my old Benz, but this is due to a design flaw and the pump sits low, so it can easily get wet and then completely dies. I’m positive that I can hear the pump running.


Has anyone ever experienced this problem, I would really appreciate some assistance. I’m pretty good with working on cars, I am no Porsche mechanic though and the engine area is very tight compared to anything I have worked on in the past. I cannot even see the pump. I think it’s on the passenger side?? Please let me know your thoughts.
Cheers,
-Bob

 

if it isnt a belt and it reads like you know the difference it could very well be the SAI pump. they have been known to act up noisily as they go. would be heard at startup for sure.

 

I believe those codes are emission related and may or may not have something to do with the noise. It doe sound like your SAI pump may have an issue.

 

iirc they are indeed SAI related codes, as i guessed at. though i have been known to be wrong. but in your Rlist thread you reposted/updated the codes as "0410 and 0411".

check em out and gl.

 

I did some reading on the subject and some have found that it can be as simple as replacing MAF or loose vacuum hose as far as 0410-0411 code? Your mechanic should be able to straighten this out fairly quick.