Hard starting found P0122 code Throttle/pedal position sensor A circut low input on 2005 Chevrolet Aveo

What is the most common cause? Having trouble on cold starts. Car sits for 8-10 hours at work and even on warm days it is hard to start and then skips and studders for a few seconds before leveling out and runs okay. Problem started shortly after the engine overheated due to water inlet splitting open.

by in Glenwood, MD on September 21, 2012
1 answer 1 comment
ANSWER by on September 21, 2012
could be a fuel pump losing its prime when you go to start it turn the key on and off three times that will build up your fuel preessure
COMMENT by on September 22, 2012
Thanks for the tip. I have tried that at the suggestion of my dad. Didn't make any improvement. It seems as if what ever mechinisim is supposed to act like a choke (like on the old model cars)is not working. I did get one error P0122 recently indication low voltage on the Throttle or pedel positioning Sensor (TPS). One fix recommend ajusting the throttle sensor. Mine does not seem to adjust.

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