My car starts runs fine then when parked will not start untill it sits for a half hour or so? It has died on the run a couple of times. same thing let it sit long enough will run again. fuel pump? or relay?
Try fuel filter first
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This does not sound like a fuel filter problem. Clogged or faulty fuel filters are consistent in nature, regardless if the motor is cool, warm or hot. This sounds like a temperature related issue. if you have to let the car sit for 30 minutes or so before the car will start again, this mean the car has to drop below a certain temperature before the faulty part will work again. If the CPS (crank position sensor) is going out, this will cause the symptoms you have described above, but it won't send a code to your ECC (electronic computer control). Did your check engine light come one? Also, have you had any parts replaced recently or have you gotten the inside of the engine compartment wet (ie car wash)?
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