I have a 02 wrx with an auto tranny. It has a cobb uppipe and full exhaust running an AP stage 2. I also have the cobb pulley. Other than that and a few handling mods its stock. The car has 90,000 miles. The car was great up until 3 weeks ago and even though it is an auto was fast.
About 3 weeks ago the car started overheating so I took it to the dealer. Its there right now for the 3rd time. This is what they did:
Head gasket. That was the first diagnosis. The dealer tore the engine down and said the vales and pistons "look like a new car". It overheated on the way home.I noticed that when the car was apart that they layed the exhaust ON the intercooler and dented the crap out of it. They will not put a new one on but said it was only cosmetic. I pulled the dents out with pliers.
2nd time thermostat and raplaced a hose.
Took radiator out and had it flushed.
They said they checked the water pump and fan operations. They said everything is okay.
The car will not overheat driving around town but will on the highway around 70mph. If you gun it, the temp actually goes down. They are dumbfounded.
I have paid close to $3,000 including rental car. I use the 91 octane map. I should also add that before it went to the dealer the car hauled ass. Its a complete dog now. I cant even think about getting an sti now financially and if the dealer can't fix this one there is now way I'd buy a new one. One of the salesmen had the audacity to tell me "they'll never fix it" and to trade up. There is only 1 dealer here in okc and its 30 miles away. A this point I couldnt afford to take it somewhere else anyway so im hoping to find out what is wrong and tell them. No, they wont give me my money back even though I think I'd know if it was the headgasket. that didnt fix it and I park the car in the garage and you'd think it would have lost ccolant or smelled.