au.hanson:
Sometimes, this can be fuel pump issues, because it does too much work to pump the fuel when the fuel is low. You can observe the power of your pump by uninstalling it and testing the pump pressure with the terminals of the car battery to confirm if it is pumping high or low. Secondly it could still be an electrical issue around the fuel pump relay socket at the boot, if it were w202(i am not sure of w203). If it were w202, this is what you would have done:
Because of the much needed pressure at quatre tank, it may be having failing or partial contact, to test this , connect a wire to the first hole by the right of the fuel pump relay socket(usually no connectors goes through the fuel pump realay to this hole) and extend the wire to the positive head of your car battery, fix back the fuel pump relay to sit on the wire too. Start your motto and drive extensively at low tank and observe if it will cut off again. Good luck

tommysparks: Hello benz users, I use a C240 W203
My problem is dat d fuel cuts at 1/4 tank I have to refill d tank before d car starts. D car was jerking my mech checked d fuel filter it was filled wit dirt so I changed it and had him wash d fuel tank now d jerking has stopped but d fuel now cuts and d car won't start when it gets to 1/4 tank. Pls anyone with such experience should tell me how he solved his own cos I want to minimise trial and error from our local mechs cos once they touch ur car wit guess work its always one problem to another.

Ikenna351:


I dont know much about Benz injection systems, but i do know that the symptom the Tommysparks car is having sounds like Fuel starvation issue,usually caused by failed intank fuel pump, for cars with two fuel pumps: intank pump and main (external) pump. When an intank pump fails, the fuel will be cutting off when fuel goes below half tank.

I wouldnt know if Benz or that particular C -class has intank pump, but i would check if it does, if i were tommysparks. And if there is intank pump in the tank, i would simply replace it without carrying out any other test, because thats the symptom of failed intank pump. But if it doesnt have intank pump except the main or external pump, then....

Please, note that its dangerous to test intank pump outside the tank. It could explode. Its also designed to run inside fluid (fuel), which acts as a lubricant for the pump or cools it too.

Like i said, i dont know much about Benz, but tommysparks car is having fuel starvation issue, and the culprit is usually intank pump, for injection system with intank and main pumps.

Ikenna.

Gee2728: got me a W202 2000 C230kompressor, its a brillient car. Before the check engine lights came on it was superb. I once did 237kmp on a strech 2 abuja from kaduna. But lately I notice a delay in trottle respons have tried several mech with diagnostic machine no one seems to know the fault I even strogle to go pass 180kmp lately. Please any 1 knows somthing abt this or a good mech to help fix this fault.

Gee2728: got me a W202 2000 C230kompressor, its a brillient car. Before the check engine lights came on it was superb. I once did 237kmp on a strech 2 abuja from kaduna. But lately I notice a delay in trottle respons have tried several mech with diagnostic machine no one seems to know the fault I even strogle to go pass 180kmp lately. Please any 1 knows somthing abt this or a good mech to help fix this fault.

Gee2728: got me a W202 2000 C230kompressor, its a brillient car. Before the check engine lights came on it was superb. I once did 237kmp on a strech 2 abuja from kaduna. But lately I notice a delay in trottle respons have tried several mech with diagnostic machine no one seems to know the fault I even strogle to go pass 180kmp lately. Please any 1 knows somthing abt this or a good mech to help fix
this fault.

Gee2728: got me a W202 2000 C230kompressor, its a brillient car. Before the check engine lights came on it was superb. I once did 237kmp on a strech 2 abuja from kaduna. But lately I notice a delay in trottle respons have tried several mech with diagnostic machine no one seems to know the fault I even strogle to go pass 180kmp lately. Please any 1 knows somthing abt this or a good mech to help fix this fault.

xerotop:

God is purposely helping you with delayed trottle response, so u wont commit sucide.
please leave the car alone. but if u insist, go 4 a scan, but i suspect ur super charger. may be wearing out

aikerism:

Well diagnosis is ur best bet to finding d fault so there won't be room for guess work... And pls bro your right foot is a lil heavy I see, for the love of God take it easy with all that speed.be safe. Cheers

sultaan:

Air filter, and or spark plugs, and or fuel rating

smartchoice:
Have you tried a Star diagnostic machine?

Gee2728: is it differnt from the other usual diagnostic machine the mech use? If it is wld want to buy one for myself cos some of this mech cnt be trusted...with all the diagnostic no one seems to be able 2 find a lasting solution its been abr 3months now.

smartchoice:
Not just unique but designed specially for Mercedes.

Gee2728: got me a W202 2000 C230kompressor, its a brillient car. Before the check engine lights came on it was superb. I once did 237kmp on a strech 2 abuja from kaduna. But lately I notice a delay in trottle respons have tried several mech with diagnostic machine no one seems to know the fault I even strogle to go pass 180kmp lately. Please any 1 knows somthing abt this or a good mech to help fix this fault.

Gee2728: got me a W202 2000 C230kompressor, its a brillient car. Before the check engine lights came on it was superb. I once did 237kmp on a strech 2 abuja from kaduna. But lately I notice a delay in trottle respons have tried several mech with diagnostic machine no one seems to know the fault I even strogle to go pass 180kmp lately. Please any 1 knows somthing abt this or a good mech to help fix this fault.

Gee2728: so how do I get it

smartchoice:
any standard auto shop should have it. But if you want it that bad try masquestonline.com they are based in Lagos.

au.hanson:
I believe your machine isn't a manual tranny else i would have ask you to check your clutch. If it is auto tranny,which i beleive, i would confidently say that you should Check your kompressor system. Something is gradually going bad somewhere in that system, soon your engine sound will start getting louder:It may need a little attention. You could confirm this by comparing your fuel consumption then with now; and definitely you should notice a slight increase in your mpg and reduction in the sharpness of your performance(i'e quick acceleration); For instance, if you use to make 0-65mph in 8 secs, you will now be making same in 11 secs or more. i know that very few Nigerians effectively fix that,precisely one guy at Aba, but you will need to be on the queue cos he's really got much in his hand to handle since he is good at it..and he gives 4 yrs guarantee after fixing it.

Trac: I'm going to sound odd and out-of-place but it is worth discussing/addressing. I am not anticipating an episode but caution. I've gone through the last two pages and [it] isn't too impressive. Diagnosing a vehicle is not something to be done online. In the last two pages, the hypothesis are off. One specifically given - for a relatively simple problem - completely off with an expensive solution. Another; a repair done that was completely unrelated but expensive. Mechanics are paid to do this, for it is their career and they possess all the resource needed to get the job done.

I don't despise humble beginnings; the very reason I don't go around putting inputs on threads, save for a few exceptions. Giving off solutions is not as reading a book. Maintaining a Mercedes is not cheap neither is it easy when certain tier of problems occur. It is also picky. What happens when the internet is shutdown? It puzzling how one owns a vehicle without a pre-determined considerations who the service-mechanics would be.

So far (from the last two pages) - all I can conclude is the race to eliminate symptoms without "fore-'cepts" of root-causes.

It's bad practice. It is not an opinion but reality. Some are far-back in maintenance that is becomes troubling to a third-party observer. I'm not being thread-specific regarding the last sentence but day-to-day reality. It's not just Benz but other vehicles. Many ought to budget money and fulfill appointments with a mechanic (garage). That should be promoted. This may seem like a the easier path out but motion does not mean progress.

Gee2728: tnx bro, the code is P1236-magnetic compressor clutch. But the supercharger seems 2 be working fine.

Trac: I'm going to sound odd and out-of-place but it is worth discussing/addressing. I am not anticipating an episode but caution. I've gone through the last two pages and [it] isn't too impressive. Diagnosing a vehicle is not something to be done online. In the last two pages, the hypothesis are off. One specifically given - for a relatively simple problem - completely off with an expensive solution. Another; a repair done that was completely unrelated but expensive. Mechanics are paid to do this, for it is their career and they possess all the resource needed to get the job done.

I don't despise humble beginnings; the very reason I don't go around putting inputs on threads, save for a few exceptions. Giving off solutions is not as reading a book. Maintaining a Mercedes is not cheap neither is it easy when certain tier of problems occur. It is also picky. What happens when the internet is shutdown? It puzzling how one owns a vehicle without a pre-determined considerations who the service-mechanics would be.

So far (from the last two pages) - all I can conclude is the race to eliminate symptoms without "fore-'cepts" of root-causes.

It's bad practice. It is not an opinion but reality. Some are far-back in maintenance that is becomes troubling to a third-party observer. I'm not being thread-specific regarding the last sentence but day-to-day reality. It's not just Benz but other vehicles. Many ought to budget money and fulfill appointments with a mechanic (garage). That should be promoted. This may seem like a the easier path out but motion does not mean progress.

Gee2728: why we put our issue here is to find ppl with similar experience and how they go abt solving it not because the internet is going to solve our car problem. Have been 2 digitzed top notch work shop and paid 20k for diagnostic only 2 be told it needed further diagonostic and with my experience searching on line some of this things one can actually do urself. The BAS lights for instance 99 perct of the time is caused by bad brake switch but the idiot changed almost 3 sets of brake pads b4 I got the solution on line.

Trac:

It may right but that only works in limited conditions. What is disturbing is that the root problems aren't addressed. Frankly, there is very little you can do by yourself without the proper tools. Buying a car that can be readily maintained is the better alternative than buying without the thoughts of maintenance. A mechanic that works on Benz will be very good in Benz. It's a different car and complex in composition. There are many precautions and post-cautions on the contemporary models that will discriminate the unexperienced.

There are Nigerians that can work on Benzes without remedial services. There is a reason why it is their jobs.

The E's (including CLS and CL) and the S's are the most expensive Benzes to own. I am referring to all the variants. Mercedes discloses limited information concerning these models. The rest of the line-up are fully disclosed. The mechanical information Mercedes releases are not understood by the layman or a person without professional understanding relating to Benzes. How does the internet fill that void? You need to question why "they" are on the internet with so much queries about a problem. Majority are leasing a vehicle but do not want to patronise the independent mechanic or dealer that will perform the required maintenance. I am sure the professionals are not disclosing valuable information because it will be unprofitable. Therefore, useless information abounds.

These are cars for qualified mechanics. It is not for amateurs. This is why many foreign purchased vehicle do not go two years in Nigeria. It's a duty for everyone to find a qualified mechanics; not resorting to the internet as life-support (maintenance).

smartchoice: I REALLY DISAGREE WITH YOU ON THIS....FORUMS LIKE THIS ABOUND WORLD OVER, WHILE DIAGNOSIS CANT BE DONE ONLINE VALUABLE INFO CAN BE ACQUIRED AND NECESSARY CONTACTS ALSO.

smartchoice: @GEE call Chibuzor on 08037220897 he's a Benz technician in Lagos. Am sure he can work your car.

Gee2728: What's ur fuel comsumption....I drive a W202 C230kompressor if am travelling I cld get up to about 342mile(547km) on a single tank(62liter) and abt 297mile(475.2km) when in town. Please my pple are this figures normal pls share ur experience because som1 said a running an oil field.

kuntash:

Good point... thanks as always!