So, I've been trying to diagnose a misfire on cylinder 4 on my 2002 WRX (Need help diagnosing hesitation problem). I had pretty much ruled out plugs, coils, fuel filter, MAF, and air leak. I didn't want to start just replacing costlier parts until the problem was fixed, I figured it would be chaper to take it to the dealer and pay to have them diagnose it. While it was there, I had them replace a tie rod, replace two cvs boots, change out the tranny and diff oil, and replacement the timing belt for a grand total of $1300. BTW - they claimed they fixed the misfire and hesitation by replacing a sensor connector, not sure which one, it's the top connector in the connector cluster underneath the little cover that is behind the intake on the strut tower enclosure. That didn't do anything. Misfire and hesitation was still there when I picked it up.
So to the point. My timing belt snapped two weeks later. They claim that one of the idler pullley bearings fell apart and tore up the timing belt. I think that is bs. They say they are only going to pay half of the PARTS COST ONLY. Not sure how much damage was done, they're guessing all new valves at least. No clankity noises, so I guess that's kinda a bright spot. What should I do? I've contacted SOA and they said they will give the dealership a call. I've also contacted a friend over at COBB who's gonna talk to some other dealers. Everyone I've talked to has said their explanation is bs.