Could be your Intake Air Temp (IAT) sensor defective in intake manifold....this regulates what DME "thinks" should be cold\hot start..either that or you have a heatsoak problem..
Quote:
Originally Posted by fitter527
on really hot days,30+,it takes about a dozen or more tries to start my car.25-30,half dozen tries.under 25 the car starts first try.has anyone else experienced this before. 
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