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Originally Posted by King_Chief_Fan
A failed alternator caused me the very same problem as described. Once the battery was drained and the alternator could not keep it charged, everything electronic went out. Car would crawl but that was it.
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He was able to restart it so it isn't a dead battery/ bad alternator.
Sounds like the computer read a fault in a sensor (probably TPS) and put the car in limp home mode.
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All cars having a TPS have what is known as a 'limp-home-mode'. When the car goes into the limp-home-mode it is because the accelerator and engine control computer and the throttle are not talking to each other in a way that they can understand. The engine control computer shuts down the signal to the throttle position motor and a set of springs in the throttle set it to a fast idle, fast enough to get the transmission in gear but not so fast that driving may be dangerous.
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