Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

My radiator bypass hose burst when car was hot and spewed…

Customer Question
Hello - My radiator...

Hello - My radiator bypass hose burst when car was hot and spewed radiator fluid over the entire engine bay. The car started running terribly as if on four or five cylinders - starts fine but as soon as accelerate it misses and some backfiring when take my foot off the accelerator.

Mechanic's Assistant: Where exactly do you think the noise is coming from? And how long has this been going on?

I took an air hose and blew every connector dry and that has not helped.

Mechanic's Assistant: What is the model/year of your Mercedes?

1994 E30 Sportline

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

E320

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Yes I am fixing the car myself

Submitted: 24 days ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Customer reply replied 24 days ago
Then car is a 1994 Mercedes E320 Sportline
Answered in 8 minutes by:
5/30/2018
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 24 days ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mercedes
Satisfied Customers: 5,517
Experience: Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Ask Your Own Mercedes Question
Customer reply replied 24 days ago
Thank you.
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 24 days ago

So now the hose was replaced and coolant issue is gone, but we developed a misfire ,and u did blew the connector with air, do you have like CRC electrical contact cleaner to spray all connectors

how hot the car got and how long u driven on it hot ? did u blow a head gasket

is it building pressure in coolant jug ?

check engine light on

Are you looking for the most possible causes or you are repairing it yourself .

Please Let Me Know

Thank You

Chad Farhat

ASE Certified Technician

Ask Your Own Mercedes Question
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 24 days ago

CLICK ON LINK TO VIEW THE HOSE, IS IT # 4 ON DIAGRAM

Ask Your Own Mercedes Question
Customer reply replied 24 days ago
The car heat index was between 80and 120 - I pulled over as soon as I noticed some steam coming from the engine - I was driving slowly at the time.
No head gasket blown - No water in oil!
Check engine light is not on>
Yes pressure is building in coolant jug.
No I have not used CRC electrical contact cleaner!
Customer reply replied 24 days ago
It is pointless viewing the drawing. The bypass hose has been replaced and new coolant put in and no leaks.
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 24 days ago

PRESSURE BUILDING IN JUG ,WE HAVE TO KNOW WHY BEFORE MOVING TO MISFIRE

DID YOU BLEED SYSTEM AFTER REPAIRS, THERMOSTAT CHECKED?

DOES IT BUILT PRESSURE QUICKLY OR UNTIL IT REACHES 1/2 ECT

FANS COME ON ,WHEN AC TURNS ON

Ask Your Own Mercedes Question
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 24 days ago

if you all that was done and u still building pressure ,we need to know why

did they do a block head gasket test

is thermostat opening ?

is driveable , or backfires

plugs pulled and checked ,coils inspected at shop ?

by the way i ask for info to help you better and be accurate , i m not next to the car to see or touch it

Ask Your Own Mercedes Question
Customer reply replied 24 days ago
The misfiring - running badly only started after the radiator fluid went all over my engine bay. Normal pressure build in the radiator reservoir - Nothing to bleed in the system - It is a radiator - just fill it up.
Yes thermostat is opening! All plugs pulled and checked.
It is drivable but runs badly.
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 24 days ago

not sure on this one, will opt out for other expert for you to assist further

Ask Your Own Mercedes Question
Customer reply replied 24 days ago
Thank you
Customer reply replied 24 days ago
Well is anyone going to assist me? I have waited an additional 20 minutes now.
Mercedes Mechanic: Danny, ASE Certified Technician replied 24 days ago
Danny
Danny, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 4,474
Experience: ASE Master Technician with L1 advanced engine performance, VW Certified, former US Army mechanic
Verified
The most likely cause of this is going to be actually probably just your spark plug wires.What I'd like you to do is get like an old spray bottle filled with water and start the vehicle up and then missed the spark plug wires in a manner so that you really don't get the water anywhere else but them.If they're the problem you're going to get a much more severe misfire, and if spring down the wires doesn't do it then wait for a minute or two just to make sure that it doesn't start after and then I want you to spray the ignition coil.It's most likely going to be the plug wires or the coil if it were like the distributor cap or something I would suspect you would notice because it would have massive cracks in it probably but it's a possibility...The crankshaft position sensor is going to be the other main possibility and that's going to be bolted above the oil pan on the Block near where the engine and the transmission bolt together.
Ask Your Own Mercedes Question
Mercedes Mechanic: Danny, ASE Certified Technician replied 24 days ago
I'm sorry it took so long unfortunately there are some guys that run around here trying to answer German vehicle questions when they don't have a clue about how they function and when they do that it ends up knocking the customers post all the way to the bottom of the questions and it doesn't get seen and it's not always super easy to tell that they opted out of it either.I personally think that unless you have German car experience you should be answering German car questions because you're about to 10th person I've seen in 2 days that these guys have tried to give these generic answers to and it doesn't work out and all it does is make people mad.ASE certification is not a qualification to work on a BMW or Mercedes or even a VW. Completely inapplicable.
Ask Your Own Mercedes Question
Mercedes Mechanic: Danny, ASE Certified Technician replied 24 days ago
Anyway just so you know the way the site works is the website is taking your deposit but we're just contractors working from home or whatever on our cell phones or laptops and so if you don't end up hitting except I don't get paid any money at all so my goal is to help you fix your car but please remember after we get the vehicle fixed to return and take care of accepting otherwise they just keep your entire deposit and they don't give me anything and with this new membership thing they're trying out that's been happening far too often
Ask Your Own Mercedes Question
Customer reply replied 24 days ago
I was getting agitated for I know more that the person answering - I have been working n my cars for 30 years. Ok All the coil packs and plug wires on the E320 are housed in the top of the valve cover - I took it off yesterday and the seal was good there was no moisture in there. I removed all plugs and replaced.
Customer reply replied 24 days ago
I'll make sure you get compensated Danny - Thanks
Customer reply replied 24 days ago
I have read a lot and I mean a lot of reports of significant wiring harness issues with 93 to 96 those with electronic fuel injection.
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mercedes mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Danny Your Own Question
Danny
Danny
Danny, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 4,474
4,474 Satisfied Customers
Experience: ASE Master Technician with L1 advanced engine performance, VW Certified, former US Army mechanic

Danny is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

29,460 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

4,460 satisfied customers

20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

643 satisfied customers

Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

Work and diagnose electronics on daily basis.

< Previous | Next >

Related Mercedes Questions
We replaced the aux batttry in e320 2004 Mercedes and reset
Hi we replaced the aux batttry in e320 2004 Mercedes and reset to factory setting. Still getting the red battery workshop light … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
My E320 has r134a Synthetic refrigerant in it and one of
My E320 has r134a Synthetic refrigerant in it and one of regular r134a refrigerant was add to the car and it stopped cooling what should be done … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I own 2007 Mercedes E320 Bluetec V6 Diesel and originally
Hi I own 2007 Mercedes E320 Bluetec V6 Diesel and originally had Denso AC compressor Part number(###) ###-#### I got same brand new Denso compressor but what I am having problem is how much oil to add… read more
Wolfgang
Wolfgang
8 satisfied customers
I am trying to change the spark plugs on my 2012 ML350.
I am trying to change the spark plugs on my 2012 ML350. Videos on this all appear to be 2011 and earlier models. I am stuck on how to remove the unhinge cover to access the coils. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,487 satisfied customers
Mu Mercedes E320 year 2003 sunroof leaked under the driving
Mu Mercedes E320 year 2003 sunroof leaked under the driving seat considerably and restraint system defect sing came on last night but this morning car key won't turn and when I open the doors no light… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
2001 E320 left signal stays on even when in lever is in
2001 E320 left signal stays on even when in lever is in neutral position. I plugged in a OBD (Blue Driver model) and the scan came up clean with no reports. I also removed fuse 3 in the fuse box under… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
This is blower not working. 1997 e320. I took blower motor
I took blower motor out check out side with power prob it's working and check power by connector is giving power … read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,132 satisfied customers
I have a 2002 e320 4matic and while driving home tonight I
I have a 2002 e320 4matic and while driving home tonight I started to hear a high pitch whine. Then, after slowing down to make a the car no longer had any drive. It was like I was stuck in nuetral. b… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
I have an 2003 E320 with less than 90,000 miles and the #8
I have an 2003 E320 with less than 90,000 miles and the #8 7.5 amp fuse keeps blowing every time I replace it...can the siren be causing the problem? I also have trouble with the main battery being dr… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
99 E320 cranks good, but will not run. Fuel pressure is 50+
See above . Fuel pressure good. Ether did not help spare key no change. Seem to be no sparp … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
99 E320 gas, electric fans not turning on therefore AC is in
99 E320 gas, electric fans not turning on therefore AC is in and out, when forced on with the 2 auto buttons the fan's come on but very slow … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
My Mercedes E320 2001 is having issues with the A/C. It
My Mercedes E320 2001 is having issues with the A/C. It blows hard and cold when I first turn it on in the morning, but does not blow at all once I try to start it again after I turn it off from the m… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I have a 2000 Mercedes E320 with a P0715 code and the car
I have a 2000 Mercedes E320 with a P0715 code and the car stuck in limp mode. I've changed the conductor plate along with the connector that goes on the side of the transmission. I erase the the code … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Changed out the Spark Plugs on my 1999 SL 500 AMG first the
Changed out the Spark Plugs on my 1999 SL 500 AMG first the left side. Car ran great. Next day the Right side, now the car Idles rough, Stalls and when you give it gas it bogs down no power … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
Doors on mercedes 2002 e320 will not lock by remote. Checked
doors on mercedes 2002 e320 will not lock by remote … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Misfiring 0n sparks 5 and 6. Replaced spark plugs, wires,
Misfiring 0n sparks 5 and 6. Replaced spark plugs, wires, coils, and position sensor and still getting misfire … read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
92 satisfied customers
I just replaced my spark plug wires and after I replaced
I just replaced my spark plug wires and after I replaced them my car started with a rough idle and when I gave it gas it just dies it ran fine before I touched it … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
4,460 satisfied customers
I was changing the spark plugs on a1999 c230,,and the wire
I was changing the spark plugs on a1999 c230,,and the wire connector that connects to the coil pack broke,,could I splice the wire and use another connector … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x