So here is where I stand thus far, Titan has been at the dealer since Monday. Fuel pressure good, no vacuum leaks, coils good. Tech says my primary cats and secondary cats are partially clogged. Keep in mind my manifolds got replaced two years ago under warranty.
They say they can't proceed with diagnoses until new exhaust is put on. meaning two new manifolds, mid pipe and cat back. I refuse to believe they can't check individual O2 sensors until after the new parts are put on. I also refuse to pay for an entire exhaust, ESPECIALLY when they can't tell me what caused it to fail in the first place. All the tech said was that he was getting the computer to tell him bank 1 was running rich (drivers side). He said however when he checked the plugs they showed no sign of running rich. He then told me I had the wrong plugs and I told him they were the correct heat range, but they were just copper and not platinum because I didn't want changing plugs to cost me $60. I knew the coppers wouldn't last as long. So he thinks that maybe the plugs weren't burning all the fuel. Plugs have been in about 35K miles. Possibility but I'm not sure I buy it given the rich condition only on the drivers side.....
I'm looking at three situations here: 1) I buy long tubes and midpipe and go completely catless. I also need new tires and have the new ball joints and rear caliper in my garage ready to be put on. 2) I take it back and replace the O2 sensors myself and see if that fixes the issue (hollow out the cats as well). Or, 3) I see what I can get on trade and get a new truck altogether.
Thoughts? Opinions? Advice?
Also, if anyone knows off hand can you give me a ballpark figure for long tubes and mid pipe so i can help figure that into my decision making process. Thanks!
