S4 Fuel-up Log

2001 Audi S4
Property of bkbethers. Added Mar 25 2017

Showing a single fuel-up

Dec 2 2020

Front cam seals and front crankshaft seal to stop oil leak. Also did Timing Belt Kit and Water pump while it was torn apart. Discovered that the water pump had started leaking, which explains why my coolant level had dropped below the min line on overflow reservoir. Also replaced the driver side front axle & CV joint due to a torn CV boot. He said the driver side upper rear control arm and Upper ball joint are a little loose, but not bad enough to recommend replacing yet. Also found that the driver side catalytic converter has a crack in it, which is causing an O2 sensor fault code, which is apparently the only CEL code currently. He said I may be able to find a muffler shop that could weld the crack to seal it up, but that most would likely want to replace it. Finding a replacement cat could be difficult as the downpipes, cats, and exhaust are all aftermarket. Looking at my list of mods it apparently had AWE downpipes and cats and Milltek exhaust. Searching online it seems the AWE downpipes go from 3” to 2.5”, but would need to measure to be sure. Adan thought it may be 3” at the cat. AWE no longer makes them, but I was able to talk to somebody there who suggested I could find a 200 cell cat with the same diameter inlet and outlet that should work and should work with the software tune. Though he said I may want to confirm with the software tuner. Depending on the cost and labor to replace just one cat he suggested I may be better off replacing the downpipes and cats together and as a set and said billyboat at BBexhaust.com still sells a performance downpipe and cat set for my car for around $1,100. He said there is a potential risk that replacing just one cat could create a lop-sided effect if the used cat has buildup and doesn’t flow nearly as well as a new cat and the car may not run right as a result.

• 210,750

  Odometer

Added by bkbethers on Dec 2 2020 at 7:40 pm