autobonrun

2005 TurboS 43k miles owned 8 years

Im taking my TTS in later this year for service. Just preventative maintenance to replace plugs and coils. This set has about 15k miles on them. I would like to know what else I should consider replacing while it’s there for service?

On my M5 I usually replace the fuel filter, MAF, O2 sensors, and Hall effect devices like cam position sensors during major service. Is there any benefit to doing these items on the TT or should I just have the basics done?

thanks for any input

Carlo_Carrera

Since the car is almost 20 years old I would do this full 60K service.

That would be spark, plugs, coils, air filter, cabin filter, transmission oil, front differential oil and fuel filter.

Scrh1

Here’s a comprehensive diy pics etc for you to review….

http://bd8ba3c866c8cbc330ab-7b26c6f3...tenance_R1.pdf

autobonrun

Thanks. I’ll add the fluids and consider the full 60k mile service. I had the 30k mile service done in advance and might as well use the 60k mile service as a go by. Ivan probably do the MAF and O2 sensors myself.

Scrh1

Maf and map sensors are easy ones. The 02 sensors are fun to get out……torch time or an inductive heater to get 5hose bad boys off at least on mine !

autobonrun

Seriously. I thought they just screwed in and out.

Well on second thought, my O2 sensors are fine.

Carlo_Carrera

They do screw in and out but sometimes they stick so applying a little heat to the bung they are screwed into will help ease them out.

vtec_

Wouldn't be a bad idea to do a boost leak test and replace the #16 check valve

There are quite a few check valves that should be replaced up there. Perhaps changing out the F-pipe hose to a silicone one before the oem one splits if you haven't already. Apparently this is common.

autobonrun

Thanks. That’s stuff I would not have thought of.

vtec_

Have them check the diverter valves..They should hold 20 psi of vacuum. You can just compress them by hand and plug the nipple with your finger and see if they stay open as a quick test but mine were able to hold 20 psi without any leaks.

Lazurus

If a manual? The 90K service interval for gear oil is ( to me ) vastly overdue also. If you like your transmission. I'd say 45K miles is just about right to ensure smooth shifts and eliminate "notch-i-ness". Only thing mentioned that from experience I don't see as "regular maintenance" items? are the 02 sensors. Do they go south? Sure. But that is the time to swap them not premptively and yes, they can get "stuck"!

That said. Everything that wears out can be replaced, and no one could fault you for doing it "early".

autobonrun

Thanks much. Mine is a manual shift.

Carlo_Carrera

Most independent mechanics recommend changing the O2 sensor before the catalytic converter at around 90,000. The one after the catalytic converter will last longer but since you’re in there might as well change both on both sides.

QwikKotaTX

The front diff is more time consuming to replace the gear lube but the tranny is very easy.

sullivs

How about the servicing the front wheel bearings and half shafts? Could they use some attention? I just drove 500+ miles back from the Porsche Parade and I had a rhythmic noise coming from the front of my car on the highway. It sounded more "mechanical" than simply tire noise. My car has 61K on her, and I don't see any records of front diff service.

Thanks,
Steve