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Discussion Starter · #1 ·
I took my 3.2 into my local Audi Service center last week for an oil change and 98K checkup. The told me I have a coolant leak, took me back in the shop to show me... I saw some dried up coolant at the bottom front of engine and at the Thermostat housing and a very little bit in the valley below the plenum. I'm loosing very little coolant ,not really noticing any level drop in the coolant tank.
So he says my front crossover pipe is leaking, and if they do that then need to do the heater pipe under the plenum and do the thermostat and all associated items, except the water pump which I did under warranty at 14k.
I looked at the engine but really was skeptical about that front pipe leaking, and from what I see it is the Thermostat housing front which is leaking down the front of the engine and into the valley. The quoted me 8 hours labor and 2800$ to do the job. Would any have a manual on replacing the thermostat for the 3.2 V6 FSI or any comments on that price is that fair? seems high to me, I looked up the parts on Audi of Americas site the MSRP was about 800 for all of them plus the water pump and both radiator hoses... they were telling me 1400 in parts and not even including the water pump or hoses....
any help is appreciated....
gc
 

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Discussion Starter · #2 ·
I found a video from Edgemotors on youtube that shows the procedure of removing the plenum, so I'm good with that part... I discovered that my 3.2 FSI V6 seems to have some sort of 'PVC or pipe that is traversing directly over top the thermostat under the plenum I have no idea what that is or where it goes or how to remove it. It is clearly going to prevent me from removing the thermostat. Does anyone know what that is? and how to remove it? I posted pics of it here...

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Discussion Starter · #4 ·
Yes I may do that... I can clearly see my thermostat flange leaking, dry pink coolant on and around it... and below it on front of engine but not on the crossover pipe far as I can see...
I plan to do the thermostat myself however see a potential problem in the pipe over the top of the thermostat housing many of the videos and posts I have read do not mention that, I have the last year of the 3.2 FSI so maybe something changed.. trying to find out what the heck it is for ...
Heater maybe...
 

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Discussion Starter · #5 ·
Well I figured it out ... it is the secondary air injection outlet pipe... who would think it would be under the plenum .. LOL
 

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Mate good luck!! You have several problems together here cos your car is an older model so there are few owners on here (I had one and loved her) AND you are talking about the official Audi "stealer" network who as we all know only want yer dosh. You need to locate a good independent VAG specialist so the prices will be more er sane.
 

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Discussion Starter · #7 ·
Mate good luck!! You have several problems together here cos your car is an older model so there are few owners on here (I had one and loved her) AND you are talking about the official Audi "stealer" network who as we all know only want yer dosh. You need to locate a good independent VAG specialist so the prices will be more er sane.
You are sure right... I took it to that dealer for service for years... I am going to do the repair tomorrow should not take me more that a day got the parts wholesale just have to be carful with that air system pipe... those are fragile... thanks for the well wishes.!!
 

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Blimey GOOD LUCK!!! I found myself an indi here in Roma and I bought a VCDS system which we share, best way to go!!!
 
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Discussion Starter · #9 ·
Well I finally completed the job... Here are some pix from the process. Step 1: diagnostics (I removed the electronic connectors and vacuum lines) Step 2: went to AutoZone and rented a pro coolant system pressure test kit, found out exactly what was leaking and where... ended up being thermostat and crankcase vent base in the middle of engine channel. Step 3: replaced the thermostat and re torqued those cheep aluminum hold down T30 screws, (being very carful to not shear off any of them. Step 4: did a final pressure test let it sit at 20lbs psi for 45 mins, checking for any leaks prior to reassembly.
One got-ya though... that crankcase vacuum pipe attaching to the intake plenum was so brittle that I broke it when taking apart the intake, that is a real PITA because it is a dealer only item and it cost me 200$ which was wholesale price for the part... (you can't by the single pipe separately you must the entire vent pipe assembly!! And thanks to Youtube for the video on using standard hose clamps, the OEM clamps were near impossible to get back on that thermostat to crossover pipe, the standard band clamps wrap around after you put the hose back on!! Cake that way....
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