03 Tacoma, "dead pedal" problem.

I'm looking for an explaination to a recent problem I had with my 03 Tacoma 4x4 3.4L. The other night I was driving and stopped at a 4-way intersection. As I made a right turn and began to accellerate, I got a dead pedal. My truck idled fine and i was able to get the quarter mile home at a half mph. Pressing the gas pedal did nothing. I shutoff and restarted the truck but the problem persisted-the truck just remained at idle.

The truck made no weird or unusual sounds prior to the incident and was driving fine up until that point. Today I had the time to try and fix the problem. I assumed I had snapped the throttle cable. An underhood inspection revealed the throttle cable is fine on both ends. I started the truck and it revved up. I put the truck in gear and it drove fine.

This is baffling me. I need to know what caused this to happen so it doesn't happen again, possibly on the freeway or in a heavy traffic area. Here is some more information:

Weather was cold, in the teens for several days.
I had not driven the truck for the previous three days.
The truck was warmed up. I had been driving approx ten miles.
I am original owner and the truck has never had any serious mechanical problems before.
Truck has 160k mi.

 

2003 was the year they introduced throttle by wire. I'd start by checking the throttle position sensor.

 

If you had water in the fuel it may have caused a fuel line freeze. I would put a couple of bottles of HEET in the tank and fill it up. That is if you can't find a problem with the throttle system.

 

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