How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Lou P. master tech Your Own Question
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 4946
Experience:  15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
27644750
Type Your Mercedes Question Here...
Lou P. master tech is online now
A new question is answered every 9 seconds

95 s420 wont start. Trams froze in 2nd engine rain in half

This answer was rated:

95 s420 wont start. Trams froze in 2nd engine rain in half speed. Mechanic tried ECU tested fuel pump. It turns over and "coughs upper harness looks good. Don't know about lower yet. Any thoughts? Thank you. Van
JA: Have you ever replaced the fuel pump, or is this the original?
Customer: It tested full pressure according to my mechanic
JA: Are you fixing your S420 yourself? What have you tried so far?
Customer: All the above was done by my mechanic
JA: Anything else you want the mechanic to know before I connect you?
Customer: Mechanic said wiring harness fried. But upper is Delphi 2006 so insulation should be rubber and no biodegradable. I hope😁

Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

first thing is to either check the fuel pressure or see if the engine will run off of starter fluid.

that will tell us the direction we need to go in.

also was the fuel filled recently before this happend?

how full is the fuel tank?

Customer: replied 27 days ago.
Thanks. Starter fluid no go. Tank empty(to my embarrassment). Will fill with high test and pray for a start. Van

ok that is good news :)

better then having a major failure :)

well if you need more help after that let me know I will do my best to help.

Please take a second and click the STARS at the top of the screen to rate my service 5 stars if you feel I have been helpful , rating is just as important to me as your issue is to you. Please request me in the future. Keep in mind that when you rate it does not end our conversation, you can still return here to me for follow up information if needed, Thanks for choosing just answer. Also , if you feel I deserve one , BONUSES are GREATLY APPRECIATED! Thanks again ,
Lou P.
Master Mercedes-Benz Tech
Master ASE Certified Tech

Lou P. master tech and other Mercedes Specialists are ready to help you
Customer: replied 27 days ago.
Gas failed. Will try to reset throttle and trans frm video on internet. Am desperate now(h). Van
Customer: replied 23 days ago.
Above failed. Still frying to get an answer as to whether there is a separate lower body harness and if so, is there remain ones out the? This for your help. Van

I am not 100% sure about reman harnesses.

that I cannot advise on.

Lou

Customer: replied 22 days ago.
Ok
Customer: replied 16 days ago.
Started in neutral for 12+ revs had valve chatter then slowly died. Would not start again. Chhecking battery. Gets stranger but the day. Thks. Van