Undetectable yet potentially serious problem

[bhs07c]

Hi guys,I have a 2007 Nissan Altima 2.5S 4dr w/ Manual Transmission (About 23,500 miles)Last Friday (July 31st), I was on my way to the gym on I-495 (Capital Beltway). I hit 5th gear at about 65/70ish mph when all of a sudden every single warning light popped up and the next thing I knew, my car had turned off and I was left without gas, power steering, and power braking. Fortunately, by some miracle, I was able to abruptly pull off and stop, about 1 inch away from a guardrail. The following Monday, I took my Altima to the Nissan dealership. After running several tests, including a high speed test drive on a toll road, they found nothing wrong. Obviously, the last answer I wanted to hear. I then asked if the advanced timing I had recently tuned had anything to do with it, considering if that is not done right can cause bad engine damage and problems. However, the mechanic (who was also the one who did it for me with the Consult III programmer) said -2 degrees is not a big enough tune to cause an engine to stall that way. Besides he added, with the Bully Dog Triple Dog GT Gas Tuner on it's way, I figured I'd just retune everything then. So, now here I am, scared ****less to continue driving my car when I know something isn't right. Ever since that happened, my acceleration sucks and my brakes and steering have been stiffer. I need somebody to help me ASAP. It's obviously not something detectable w/o a "Check Engine Light" so any other ideas? Could the Advanced Timing be messing up my engien and if so, should I let the Bully Dog tuner fix everything or is there something else that is potentially wrong with my car. Please helpThanks

[PapaSmurf2k3]

the code that it threw should have still been in the computer unless you stopped and started the vehicle 55 times since the incident.

If it still doesn't feel right, it should be going back to the dealership. Explain to them the lack of power, the odd feeling brakes, and steering. Although it seems odd that all that would be happening, as they are 3 completely separate systems.

What you could try doing is unhooking the battery for 15 minutes or so to reset everything.

[xekushnr]

It definitely sounds like an issue with the electrical system in the car. It almost sounds like it got a power surge or something and then shut itself off. Sometimes if theres a loose connection somewhere in the battery system it can cause something like that to happen, but im not sure if it would cause all the lights to come on first. How much time passed between all the lights coming on and the car dying? How quickly were you able to restart the car? I'd definitely do what PapaSmurf said and disconnect the battery for 20 minutes which should reset everything stored in the memory of the vehicle. Try pressing the brake a few times and holding it a bit while you have the battery off, sometimes this is necessary to reset everything.