car will not start up on 2004 Infiniti M45

my 2004 infiniti stopped running while I was driving without any notice. they tried replacing the battery and complete testing but can't find a problem. they believe it may be a electrical problem. any ideals

by in Plano, TX on February 28, 2011
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1 answer
ANSWER by , March 30, 2011
if the engine turns over but will not start may be cam and crank sensors this occurs around 80000 miles on this series car if engine does not turn over then check electrical system also ck the circuit board it may be bad or have loose solder joint car will quit while driving if either problem is related to this.