So I've had this problem twice in the last two weeks or so, I'd like to figure out what's going on before it gets worse.

After sitting at a couple red lights, the engine stalled. Needless to say when the light turned green and I noticed I wasn't going anywhere, I had a trail of people beeping at me -__-. Anyone have any clue what's going on. Check engine light did come on earlier in the week, but a scan showed that the o2 sensor was bad. I don't think that would cause the car to stall, but I could be wrong.

I've got a 2001 2.8L

 

Upstream O2 sensor and Crankshaft positioning sensor worked for me (the latter first).

 

So you're saying the O2 sensor could actually be the issue? That's surprising. I have to see which one is dead and I'll have it replaced. I guess I should go with that one first given that I read no codes for the crankshaft positioning sensor.

 

Sounds like you have only taken OBD codes. Before you start throwing money at your car, I'd pull VAG-COM codes. If you don't have one, pay someone to VAG-COM it. The crank position sensor could be the problem, but so could several other sensors. I really think you need more/better data.

 

+1-ish

Vag com gave me so many codes (like 8-10) that it could've been anything.

I read the Ross Tech wiki about each code and they all related to fuel, spark, compression, incorrect flow, upstream O2, etc.

The common factor was combustion. I knew I had vacuum. I knew I had new plugs. I knew I had compression. I knew I had a new fuel filter also.

I replaced the vacuum check valves, the fuel pump relay, coil packs, cleaned plugs, and probably some other ****. No luck.

I had the codes cleared: just in case. Eventually the p0411 code came back again.

I just replaced the upstream O2 and the long ***, extra-hidden vacuum hose (the only one I hadn't replaced yet) and put some dielectric grease in the new boots.

I'm hoping that solves everything, but I haven't tested it yet. I've had the battery disconnected all week (on purpose), waiting on my instrument cluster rebuild.

G/L