Hey Doc,
I have a '99 E55 AMG that cranked but the engine wouldn't run. I just had the CPS replaced at my local "indy." My "indy" stated that after replacing the CPS and hooking the car up to their machine, the vehicle showed crank and rpm but still would not start. I had the vehicle towed to the dealer from the "indy "about a week ago. They hooked a "jump box" up to the car at the dealer and it fired right up! They stated it might have been the battery or some sort of electrical problem, but didn't give a definitve answer. I replaced the battery with a new one. According to the service agent they also cleared all codes stored in the ecu. The car ran great for a week and reverted back to the same symptom yesterday of cranking but the engine won't run. I thought that it might be the fuel pump relay, but after reading your post about the relay being incorporated into a relay module, I thought I would ask your opinion of what the next logical steps to check might be? I would be grateful for any assistance you provide.


Sincerely,


Al Washington
ABC News Inc.
Washington, DC
alfred.s.washington@abc.com