2000 C280 has intemittent starting problems. Please Help in Diag

[Rob95]

Hi all, my 2000 C280 is not starting and I need advice / help on the diagnosis and repair. IT will run but not restart. If I wait anywhere between 5 - 15 min the car will start and run between 2 minutes and 1 hour. I am considering the fuel pump and filter but these were replaced 11/07. I have my doubts that this could be the problem but I wont completely rule it out.
Is it unusual for a fuel pump to die in 12 months? I would like to check the system out. Where do you test for fuel pressure on these cars? Also could this be the Crank position sensor or is that a different set of symptoms ? I am looking for advice / procedures or other related devices that could cause this. Currently I have pulled the codes with a hand scanner and there is nothing stored or reported in the system.

Please advise

Thank you in advance

Rob

[hcetzneb]

sounds like the crank sensor... thet act up mainly when hot. just remove the sensor and bench test it to see if it is a open curcuit or very high resistance. use alittle heat from a heat gun to duplicate conditions

[99MBSport]

One of these times it is just going to stop and not start. I believe all the problem is the CPS. Easy job just need a CPS and a E8 socket, best to do this with a 1/4 drive and a good mirror(small) so you can see the bolt. There are threads on this if you do a search on this here. I just did mine and it took maybe 25min statr to finish.