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Boxster Starts But Dies After Warm Up.


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Hi my friends boxster acts up when the engine reaches the normal temp. it dies after that. when he tries to crank it it doesnt wana start. he has to wait for it to be cold again and then after that its ok again. can this be the same as the problem on mercedes Crank position sensor? thanks

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Yes, the crank position sensor and the system relays are the first suspects IMHO, their values are highly dependent on temperature, engine temp. and heat generated by system power consumers as well.

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This is somewhat common with vacuum leaks on older cars. At cold temps, the hoses contract and seal fine. At warmer temps, they expand and create leaks. I would check for vacuum leaks, a smoke machine is very useful for that (http://www.pelicanparts.com/techarticles/Boxster_Tech/21-FUEL-Vacuum_Leaks/21-FUEL-Vacuum_Leaks.htm).

-Wayne

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  • 2 months later...

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