car starts but will not idle on 1990 Dodge Spirit

my 1990 dodge spirit will start fine time after time but will not run or idle, it stalls after starting. I have chaged the fuel filter , fuel pump and fuel pump filter[sock]

by in Spokane, WA on February 04, 2011
2 answers 3 comments
ANSWER by on February 04, 2011
You have to have a check engine lite on. Turn the key on & off 3 times, leaving it on after the third time and count the flashing check eng lite on. The first code will be 12, the last code will be 55. If you need more help contact me at
COMMENT by on April 19, 2011
it flashes 12 and 55 only. since this began i have changed the fuel pump and sock, fuel filter, timing belt, idle air control motor, and idle position sensor and it still does the same thing. it starts up fine but will not idle. i can keep it running but i have to feather the hell out of the throttle
ANSWER by on February 08, 2011
It sounds like the idle air control or the Thottle Position sensor....It can be either one or both. Price for parts aprox. $100.00 plus labor 1/2 hour.Total price for both parts and labor total aprox $135.00 contact;
COMMENT by on February 10, 2011
thanks, Im still trying to figure it out. Is there a way for me to test the idle air control and the throttle position sensor before I dish out the cash for new parts? Thanks again for your help because I am having a tough time with this problem.
COMMENT by on April 19, 2011
changed all that and the timing belt and it still does it
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