2004 2wd v6
Ok, so I have a 2004 4runner with many of the same issues. About a year ago, I started having rough starts, sometimes to the point of shaking. CEL/vsc trac, etc. I took it to a local mechanic who pulled the codes and it was the same as most of you have stated. Keep in mind, I am just a girl with a 4runner so I am sure I am not using all the right terminology. But he replaced one of the coil packs, spark plugs, and a couple of other things. It went away for a while and then a couple of months later started again. It was winter then, and I started noticing that the heater only worked when I was moving. Mechanic thought it was the heater coil, tore out the dash, and found that it was fine. I had also been noticing a weird sound under the dash, drivers side, that was like water rushing around. In the end, he just "bled the coolant lines" (???), and I replaced the gas cap. That was almost a year ago. Car has been running fine until the last couple of weeks. I was off work and not driving it as much, because I prefer to drive my daughters 2001 4runner that I just bought. It started with the rough start, water rushing sound, and heater issues again. Exactly the same as last time. He pulled the codes again, and it only shows catalytic converter (which I have known about for over a year as well). He bled the lines again and noticed a lot of bubbling in the coolant. He has come to the conclusion after all of that, that there is a cracked head gasket. Soooo, with 210,000 miles on it, and looking at 2500 to 3000 in total repair costs(including the cat. converter), I am trying to decide whether to just keep driving it and see what happens, trade it and have a new car note, or fix it. I love my car, and leaning towards the repairs. I figure it will get me another 75,000 miles or so once I fix everything. Who knows, I just thought I would tell my experience. I will still buy another 4runner. I have owned 4 of them now, and although this has been frustrating, I have driven it hard and it has been pretty good to me.