Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

My 1999 slk230 won't run hardly at all. when 1st crank revs…

Customer Question
my 1999 slk230 won't run...
my 1999 slk230 won't run hardly at all. when 1st crank revs up for a few seconds then will not accelerate fumbles like out of fuel pressure. I noticed the supercharger was loose but I bought a new engine with supercharger with half my miles and replaced engine. before I changed the engine we replaced the fuel pump and the filter with no effect. help (###) ###-####
Submitted: 2 years ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 37 minutes by:
3/11/2016
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 6,238
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.
Verified

Hello, so to be on the same page, you are saying the same issue was there before and after engine replacement ?

Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

ok, so one word replies are going to drag this out for the both of us, so please be as detailed as possible,

did you swap ANYTHING from the old engine to new?

was there a check engine light on before the engine swap?

Ask Your Own Mercedes Question
Customer reply replied 2 years ago
no engine lite changed no old sensors to replacement engine only left something that looks like a filter of some sort on top of drivers fender well going to fuel system. not sure what it is. after start the acc pedal control moves but engine runs at below idlee and will not rise
Customer reply replied 2 years ago
you can call me at(###) ###-####
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

OK do you have a scan tool ?

and we cannot do a phone call without doing a phone service also i cannot call until after 4pm as i also work through the day

Ask Your Own Mercedes Question
Customer reply replied 2 years ago
but was reading no codes
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

i understood no codes. :)

what kind of scanner is it, does it read live data?

Ask Your Own Mercedes Question
Customer reply replied 2 years ago
reads only engine off but pretty good tool also reads abs ssystem
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

only engine off? that is weird, what happens when you try with engine on and running?

Ask Your Own Mercedes Question
Customer reply replied 2 years ago
never tried only with ignition on but not running
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

ok, what is the make and model of the scanner so i can see what its capabilities are

Ask Your Own Mercedes Question
Customer reply replied 2 years ago
cen-tech 60794
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

ok thanks,i see it

so you start the car, it runs ok at idle but when pressing the gas it doesnt accel correctly? is that correct?

Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

considering you swapped the entire engine and sensors that tells me its not the engine or sensors obviously, and since you have a new fuel pump that rules that out, so the next thing i would ask you to do is to loosens the exhaust, from the manifold to the exhaust, loosen it up and see if it runs now.

Ask Your Own Mercedes Question
Customer reply replied 2 years ago
it only runs fine for about 10 seconds then does not barely run
Customer reply replied 2 years ago
ok ill try that guess it could be catalytic convertor but this just started all at once it was not a gradual thing
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

sometimes the converter breaks internally and clogs the output. but that is where i would start.

BUT i need to know any other odd ball things that may be happening as well, or any items you may have swapped over from the old engine if ANYTHING

Ask Your Own Mercedes Question
Customer reply replied 2 years ago
thanks, ***** ***** as I finish checking it out I will get back with you.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

OK no worries, i will get emails when you reply and i will always reply. let me know and we can try other things.

Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

so was my info helpful?

Ask Your Own Mercedes Question
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 Lou P. master tech Your Own Question
Lou P. master tech
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 6,238
6,238 Satisfied Customers
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Lou P. master tech 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

6,238 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
Marty! 99 SLK230 with acceleration problems at low
Hi, Marty! 99 SLK230 with acceleration problems at low speed/rpm. If I can get it past 25-30mph I can find a "sweet spot" with the accelerator and get it to speed up. I've replaced the plugs, coils, M… read more
Matt
Matt
Engineer
Bachelor's Degree
643 satisfied customers
My 2001 Mercedes SLK230 sometimes stalls while driving. I've
My 2001 Mercedes SLK230 sometimes stalls while driving. I've replaced the Crank Positioning sensor, but still stalls. … read more
Matt
Matt
Engineer
Bachelor's Degree
643 satisfied customers
Just test drove a 1998 SLK230 with 130k's. really well kept,
Just test drove a 1998 SLK230 with 130k's. really well kept, was running great then just lost all power, managed to get it to the kerb. The owner was pretty stressed, car would start but fans running … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I have a 99 Mercedes slk230 that has no power. The dealer
I have a 99 Mercedes slk230 that has no power. The dealer told me the super charger was not kicking in. He showed me that when the engine was revved the super charger would not spin. How can I fix thi… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
6,238 satisfied customers
Vapour lock on 1999 MB cdi. Injectors seem to be ok. What
Vapour lock on 1999 MB cdi. Injectors seem to be ok. What next??? It is comonon rail direct injection with bosh high preasure pump. Mercedes 1999 (w202) C220 cdi. I am getting vapour lock. Every time.… read more
Matt
Matt
Engineer
Bachelor's Degree
643 satisfied customers
I spoke with Marty about my 2001 slk230, it has a long crank
I spoke with Marty about my 2001 slk230, it has a long crank with no start, when it does start it sputters then smooths out and runs great,he recommended fuel pump, I installed new fuel pump but have … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Slk230: I have a 2001 slk230, 60k miles, been great,all of
I have a 2001 slk230, 60k miles, been great,all of a sudden when trying to start it cranks bit no start at times… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
R320 CDI: I have a 2007 R320. It will initially rev to @3000
I have a 2007 R320. It will initially rev to @3000 RPM, but if held there (or accelerating under a load) it will start to miss badly as if fuel starved until returned to idle. If it is allowed to idle… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
E320: 1998 E320 W210 sedan, changed fuel pump and filter 3
1998 E320 W210 sedan, changed fuel pump and filter 3 months ago (Beck Arnley), motor mounts a month ago, a new air filter a few days ago, and today a new Bosch CPS. The car was running great (69,000 m… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
e: Hi, I have a E200 Mercedes, 1998 european model Benz. It
Hi, I have a E200 Mercedes, 1998 european model Benz. It has been in a garage for over 16 mths many diagnosis have been done but the car is not idling at all it just starts and cuts off. they changed … read more
Matt
Matt
Engineer
Bachelor's Degree
643 satisfied customers
C230: I have a 1999 Mercedes C230 Kompressor when warm it looses
I have a 1999 Mercedes C230 Kompressor when warm it looses acceleration and sometimes stalls. I have had over $5000.00 of work done by a Mercedes dealer such as Fuel pump, injector actuator, mass air … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
300e: intake manifold with new injectors..rebuilt..hoses..runs great
I have a 1991 MB 300e. After resolving a problem with popping in the intake manifold with new injectors, rebuilt fuel distributor, replacing the hoses to and from the idle control valve and replacing … read more
Stan
Stan
Technical support engineer
Bachelor\u0027s Degree
106 satisfied customers
1999 mercedes slk230: check engine light..fuel filter..spark plugs
My 1999 mercedes slk230 has been running very rough and shaking which I can feel from my seat and causing check engine light to come on. I have replaced the fuel filter, fuel injectors, spark plugs, m… read more
Auto Psychic
Auto Psychic
owner
Bachelor's Degree
1,364 satisfied customers
1999 Mercedes SLK230: accelerating..seat..check engine light..misfire
I have an automatic 1999 Mercedes SLK230. I am having an issue shaking and vibrating that comes from accelerating too quickly and can be felt through the seat when I stop or idle. The check engine lig… read more
Auto Psychic
Auto Psychic
owner
Bachelor's Degree
1,364 satisfied customers
1998 SLK230: intermitantly coming..tank..it wont accelerate well
1998 SLK230 fuel low light intermitantly coming on when tank is not empty. Car also feels like it won't accelerate well. Did have a dignostics ran and it said fuel bank 1 error? I had miss fires on th… read more
Stan
Stan
Technical support engineer
Bachelor\u0027s Degree
106 satisfied customers
1999 slk230: compressor..havent drove..obd reader shows po170..turbo
i have a 1999 slk230 compressor--havent drove again this year but started the other day --check engine lite on--- obd reader shows po170 -fuel trim bank 1--also the turbo hasnt worked since we bought … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
ML320: , has only 38000 original miles..acceleration..noticable loss
I have an ML320 1999, with believe it or not, has only 38000 original miles. I just an acceleration problem. From a stsnding start there is a noticable loss of power. No engine rev like a slipping tra… read more
Stan
Stan
Technical support engineer
Bachelor\u0027s Degree
106 satisfied customers
car is very slow to accelerate, after depressing pedal car
car is very slow to accelerate, after depressing pedal car barely responds then accelerates after a few seconds.… read more
brownjeff
brownjeff
Associate Degree
13,873 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