hundail elantra,,,im lost ,,but not the first time on 2003 Hyundai Elantra

intermittent wont start ,,,has no check engine light when this occurs ,,,have replaced used ecm and new ignition switch in collumb

by in McKeesport, PA on April 07, 2011
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1 answer 1 comment
ANSWER by , April 07, 2011
I would suspect either your cam shaft sensor or your crank shaft sensor, they both can do this on this engine. The symptom will be a long crank time before starting or the car will just crank and crank and not ever start. Also, in some cases these sensor can set codes, but will NOT illuminate the check engine light.
COMMENT by , April 07, 2011
the check engine light will not come on in the dash when the key is in the on position,,,that is when the car wont start ,,,when the ck engine light is on the vehicle starts fine,,