Re: tdc sensor???
Had the exact same problem with my 2002 LX... The cat is definitely a part of the problem. It's one piece with the exhaust manifold on the LX... My manifold was glowing red hot and had a huge crack in it. I didn't realize it until it was so bad that the car stalled and died at a stoplight, just as you described. The car goes into limp mode (reduced air/fuel...just barely enough for the engine to run to prevent damage), which is why you could restart it and it would go for a while, then the computer realizes whats happening again and says "nooooo!! something is wrong here!"
I replaced my manifold with a cheap header as a quick fix, but the real problem was the TDC sensor, which I replaced, and fixed the problem immediately. I don't know exactly how the cat/manifold issue is related to the TDC sensor failure, I would love for someone to figure that out and explain it to me.
Have you read your OBD codes properly? Mine was P1361, specific for TDC sensor intermittent signal interruption. P1362 (TDC sensor: no signal) is also relevant. That could just be loose wires/plugs.
Replace your TDC sensort, there's a great DIY guide on here somewhere. It may cost you a considerable amount in labor to pay someone else depending on where you go. It's not a tough job, just requires some patience and organization.
Probably should have your cat checked out too. I ditched mine, so I never found out if it was clogged or what the deal was.
Last edited by howaaj02; 09-03-2011 at 05:46 PM.