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Related Mercedes Questions
1987 MB 560 Sl with no power to cold start injector, check
1987 MB 560 Sl with no power to cold start injector, check fuse to overpower relay, it's good and has power. Check thermal switch and replaced just to make sure.. Car doesn't seem to run well at idle.… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
I was looking at this blog and because I was having similar
I was looking at this blog and because I was having similar problems, I noticed you said if the check engine light comes on with the key the ovp is ok. Does this mean if it doesn't it's bad or the fus… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
300SL: I own a 1991 300SL with 115k miles and the problem is
I own a 1991 300SL with 115k miles and the problem is it won't start due to injectors not spraying fuel. I have a fuel pressure connected to the cold start injector port of the fuel distributor showin… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
merz. 190e: 1990 190e 2.6 eng. checked Voltage from ovp and
1990 190e 2.6 eng. checked Voltage from ovp and fuel psi is 77.cold start valve has 12 volts to the vaive.Still no start when cold.Engine has new plugs cap and rotor.… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
300ce: Hi Marty! Been awhile, hope youre doing well. Anyway,
Hi Marty! Been awhile, hope you're doing well. Anyway, just lost the fuel pump on that 1988 300ce, so please let me know what the r&r is like, diagrams if available! Thanks, Joe… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
1986 300E: plenty of black smoke..few minutes..switches..it runs fine
1986 300E Gas When starting cold it barely starts and runs poorly. Have to give it gas to keep runnibg with plenty of black smoke. Very rich. Runs like this for a few minutes and then like something s… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
1986 260e: working temperature..actuator..i allso have the abs light
i have a problem with my 1986 260e engine. when its cold it runs, when it is on working temperature, then i have a problem, i think with fuel suply. is it posible that my electrohydraulic actuator is … read more
Stan
Stan
Technical support engineer
Bachelor's Degree
3,418 satisfied customers
1991 300ce: coupe..very rough if left idling engine seems..ecu
have a 1991 300ce coupe with 185k. starts when cold let run for 5-10 minutes idle gets very rough with a slight rpm drop. raise rpm to 3-5000 no problem rpm drops to 2000 then stays for3-5 sec then dr… read more
Auto Psychic
Auto Psychic
owner
Bachelor's Degree
76 satisfied customers
300CE: mb..dies..car in neutral and coast to a stop..starts back
I have a 1988 MB 300CE that has defied me for over a year now. The problem is that the car just dies while driving. Put the car in neutral and coast to a stop, turn the key and it starts back up again… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
Mercedes Benz: It runs great when it is running but takes
I have a 190E Mercedes Benz 1991. It runs great when it is running but takes forever to catch and start up. It is the "return valve" for the gas system the broken. Almost froze the other morning havin… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
pedal..fuel relay,lambda sensor,rubber seal..injectors..abs..idling
My 1990 200E lacks power.When i press the pedal to the metal it just roams,but nothing happens.Parked or drive,hot or cold,4000rpm is max it can do.I even removed the air cleaner and pushed the vakum … read more
Matt
Matt
Engineer
Bachelor's Degree
24,909 satisfied customers
1992 300e: interior..pulling..traffic go to accelerate..shifts
i have a 1992 300e and my interior of car reeks of gasoline fumes happened a couple times over pat few months but for past few days wont go away eha? once in a while at a standstill pulling into movin… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
about 3 min and once idling is very jurky until warm, idle..once warm
will not start when cold, turn over for about 3 min and once idling is very jurky until warm, idle below 500rpm. once warm runs beautiful, please help… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
190E 2.6: start my..with cis/E injection..cables..It starts fine
Why is it so difficult to start my 190E 2.6 engine year 1989 with CIS/E injection. I replaced the idle air control valve (used one), Platinum plugs, plug cables. It starts fine when cold, it's a dog w… read more
Stan
Stan
Technical support engineer
Bachelor's Degree
3,418 satisfied customers
eha valve and ovp relay and found corrosion (like on battery)
Cold starting vehicle seems to flood. I checked the EHA valve and OVP relay and found corrosion (like on battery) and repaired. The vehicle worked great for about 10 days but is acting up again withou… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
300E: mb..first started and runs idles rough..it works fine..drove
1987 MB 300E Vehicle seems to be getting too much fuel when first started and runs idles rough. If you can keep it running to warm up or come back later it works fine without issue. Example - My son d… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
1991 300ce: cold start..injector..disconnect..you press the pedal
1991 300ce, only way to start car is to manually / continuously energize cold start injector. wait a bit then disconnect. now it can idle on its own but stumbles if you press the pedal. Fuel distribut… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
Mercedes: run fine..fuel pump relay..fuel injectors, fuel filter
I have a Mercedes w201 2.5-16 (1991) that will start fine from cold but after running for 30 seconds or more it will not start again. i can get it started easily with a squirt of ether spray and once … read more
Marty
Marty
Mercedes Technician
Associate Degree
30,535 satisfied customers
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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

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Bosch Certified Master Tech. Over 35 years experience.

Lou Palomino

Lou Palomino

Mercedes Technician

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

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

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Matt

Engineer

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

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promerc

mercedes diagnostic technician

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

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Hipo64

Mercedes Technician

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Work and diagnose electronics on daily basis.

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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.

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