Need advice.

Although a POP! noise is indication that the turbo broke the shaft, if the compressor wheel is not hanging sideways in the housing, that' probably not it. Other POP! noises can be a boost pipe coming off. Check all the boost pipe connections.

The compressor shaft should be able to spin freely. Not knowing where or who he got the turbo from leaves me with some suspicion. The box give you any idea?

Rebuilding turbos requires no particular special tooling to get a CHRA in, but getting it right is another matter. There are a lotta guys that rebuild and a few that get it right. Without spinning the turbo up to operating speeds and correctly balancing the wheels, you end up with exploding parts. Personally, I'd rather have a known, quality turbo manufacturer put it together and I buy it brand new. If 1:20 blow up, I am upside down for the expense to repair. Profits for a good turbo are small enough without it blowing up.

Dont bother with trying to rebuild one. You wont be able to ballance it.
Just go with a stock replacment unless you want something else.
Unless your willing to do a clutch job, leave it stock. It's got low miles. Drive it cheaply get it to 350k and call it a good investment.

Franko6 said:

Although a POP! noise is indication that the turbo broke the shaft, if the compressor wheel is not hanging sideways in the housing, that' probably not it. Other POP! noises can be a boost pipe coming off. Check all the boost pipe connections.

The compressor shaft should be able to spin freely. Not knowing where or who he got the turbo from leaves me with some suspicion. The box give you any idea?

Rebuilding turbos requires no particular special tooling to get a CHRA in, but getting it right is another matter. There are a lotta guys that rebuild and a few that get it right. Without spinning the turbo up to operating speeds and correctly balancing the wheels, you end up with exploding parts. Personally, I'd rather have a known, quality turbo manufacturer put it together and I buy it brand new. If 1:20 blow up, I am upside down for the expense to repair. Profits for a good turbo are small enough without it blowing up.

Click to expand...

Turbo Box says Stigan. Compressor side is very clean from what I can see. No play or wobble in shaft and does not move much when you pull and push on shaft. Excuse my ignorance but where is the boost pipe. This is my first Turbo car so it will be a learning experience for me.

I am taking it to a diesel mech tomorrow he use to work for a certified diesel shop. He now has his own place and charges $50 bucks an Hour, I am friends with his father. He has the Tech reader to hook up to test everything. He is also the one who put Tbelt and components on at 95k.

I also have a list of maintenance done since 2016 when last owner bought it from original owner who had it serviced at dealer all the time. Has new tires put on 500 miles ago. New front brakes and rotors,oil and fuel filter change at 130k. Owner also gave me 4 new oil filters shop manual and chilton.



Edit. Just went and checked vacuum lines and the one that goes from the top inter-cooler pipe up under some plastic on firewall Was broke close to nipple on pipe. I cut it off and replaced it but have not test drive it yet. What is this hose.

Up date. I put that Vacuum line on the inter cooler pipe that broke off and took it for a run. Has lots of power now and when in neutral I can hear turbo spool when I hit fuel pedal. Now to get p1550 taken care of and put it on the road.

Well, that was easy...

I don't know Stigan brand, but it is a reman co. There are several distributors that carry their turbos.

The company has a two-year warranty, so if it's something they can date, maybe it's still got a warranty, who knows? With the install kit, gaskets, nuts etc., it's a $775 turbo.

A good stock turbo in a TDI generally makes little, if any noise.

Franko6 said:

Well, that was easy...

I don't know Stigan brand, but it is a reman co. There are several distributors that carry their turbos.

The company has a two-year warranty, so if it's something they can date, maybe it's still got a warranty, who knows? With the install kit, gaskets, nuts etc., it's a $775 turbo.

A good stock turbo in a TDI generally makes little, if any noise.

Click to expand...

Only hear turbo at high rpms in neutral like 4000rpms. Took it on 50 mile trip today and it ran great. Also took it to Mech and his reader only came up with EGR which has delete kit so expected code and P1562. It lopes at idle and low RPMs.The electrical connector is clean with no corrosion so I guess its that internal part that needs cleaned.

I think I never seen AHU or 1Z form 97-98 turbo broke . They usually start leaking oil and N75 get oil in it , that is the time that you know you need to chnage it .

No oil in N75. I had the lines off and did look for oil. Now I have noticed air coming in through clear intake Hose. Filter is getting changed so I will put new Oring on Mickey mouse to see if that stops it. Also going to do vac lines and Injector return tubes. I read a ton of threads on the air but most do not have conclusion on final fix.