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Ask Lou P. master tech Your Own Question
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 4966
Experience:  15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
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The engine sometimes won't start and if it does, it just

Customer Question

The engine sometimes won't start and if it does, it just dies on the highway or at a stop light.
JA: Does the engine turn over? How old is the battery?
Customer: Yes the engine turns over
JA: What is the model/year of your Mercedes?
Customer: 2004 c240 4matic wagon
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I gave it to a mechanic to fix, he said it was the crank sensor.
JA: Anything else you think the mechanic should know?
Customer: Picked it up today and it's left me on the highway
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mercedes Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Mercedes
Expert:  Lou P. master tech replied 1 year ago.

Hello my name is ***** ***** i will do my best to help you.I am looking over your info now and will reply back with some info, keep in mind that trying to fix cars over the internet can sometimes take time and be tricky so please give me as much info as possible about your issues no matter how important they may seem as all information will help.

Expert:  Lou P. master tech replied 1 year ago.

from what you describe the issue does sound like a typical crank sensor issue but since that was replaced we need to focus on the crank sensor connector and also the fuel pump as those are 2 things that are common to cause this issue.