Hi Stackerjack,

If you haven't sorted this out yet, I think you should look at your FPR. If it fails, as mine did, in a manner that is not letting any gas return to the tank, the full pump pressure will be acting on the injectors. I've read somewhere that it can be over 100 PSI. That will give you a rich mixture, rough running, and sooty plugs and tailpipe.

It will also cause stalling at idle because the main fuel pump overheats, and trips a thermal breaker inside. The pump relies on the circulation of fuel to keep it cool. In my case the car would not stall if run above 30 MPH, but at idle it would die after 3 or 4 minutes, then restart after a few minutes wait.

If you don't have a pressure gauge, try putting your hand on the fuel pump after it stalls to determine if it's heating up. Another test is to remove the fuel return line and see if it's dry. A restricted return line will cause the same condition, so blowing through it should produce bubbling sounds in the fuel tank.

If you don't have a spare FPR to swap in, buy an aftermarket one on Ebay for about $15. I've got 40k miles so far on the one I bought 4 years ago. It's a very simple part.

regards, Peter .