The S4 is back up and running! I think we started around 11am and wrapped everything up around 9pm. Yes, it was a long day, but we were taking our time to do it correctly. Getting to the Thermostat and Water Pump likely took the most amount of time as you have to get the car in service position, remove the supercharger, and pull out the coolant pipe. After that it was all about putting everything back together.
The last project was the Mercracing heat exchanger. It really is a pretty each install, as you drill 4 holes into the crash bar, bolt up the heat exchanger and cut the new hose to the correct length. Likely a few hours in total to it get all mounted up. At this point I forgot to take a picture but it looks very good. As I'm not running a dual pulley I know this is a little overkill at this point, but if the upgrade ever happy, I'll have a better chance to fight heat soak.
From this point it was all amount adding the coolant/water mix and purging the air out. Likely another hour doing that. Of course we had a pocket of air in the heater core, but with a little leveling magic on the lift (aka put the front end up high and the back of the car down low, we got the air out.
For the rest of the summer I have a few more project.
All the parts are in and today is the day the new thermostats, water pump, and new Mercracing heat exchanger is getting installed. The past two weeks not having my car feel like forever.... I Can't wait to get it back on the road!
A big thank you from Erik at IPM Auto Service for help and expertise with this project! He is a awesome mechanic, so hit him up if you need some work around the Redmond, Bellevue, Seattle area!
Well, my first significant issue has occurred since owning this car last weekend.... About 10 miles from home on my way to my brother's wedding, I noticed the A/C stopped working, thinking the A/C pressure sensor might have gone again I thought nothing of it. Then a few moments later, the cluster when into full Christmas tree mode and "over heating" warning flashed up. Immediate I pulled over and cranked the heat on full blast. I gave it a few mins to cool back down and then shut off the car for about 10 mins. After a few calls and scanning the car with my OBDEleven (no codes found) we came to the conclusion the thermostat was stuck closed. Unlike my previous B5 S4 where it was stuck open, the B8's are know for failing closed. Obviously a very stupid design, but as Audi can't seem to design any engine that doesn't go through thermostats every 40-60k, I'm not really surprised. Long story short, turned around made it home with the heat on full blast and kept the temps below 220F. Jumped in our 2003 Toyota Highlander and made it to the wedding just fine.
As I know most of the part are likely to be replaced again in a few years down the road, I figured I would give FCP Euro and their Life Time Warranty a try. I've heard nothing but good stuff...
The following has been order:
And for another weekend project:
The parts are likely going to take a week or two to get here so until then, the S4 going to experience its longest time being parked under my ownership...