C280 starting hesitation problem....
 

Hey guys,

Finally have the car completely refurbished, inside and out and the thing are brand new. I am so excited. Head gasket was replaced, a new water pump was installed, on top of the fresh MB wood, leather, upgraded gear stick, rims, tires, new Mercedes-Benz radio system and everything else I had done to it.

Now we have one more problem. I drive the car b/c it's ready now; in great shape. The gawkers are out in full force as this beauty w/ M3-like tires glides across the highways and biways of North Carolina.

The car rides wonderfully. HOWEVER, when I start each (after each time it has been cut off), I have to pump the gas pedal in order to get it cranked.

-Rides wonderfully/smoothly w/ no hesitation whatsoever.

However, each time I put the key in the ignition, in order to get the car going I must push the pedal and give it gas. Of course, I want to be like everyone else and simply turn my key and let it start on its own, ya know? But I must give it gas. It will occassionally start on its own every now and then, but more times than not, I must 'give her a little gas' to get it cranked.

I'm at peace b/c all of the major work is done, I'm cool! But I do want this last, iddie-bitty thing to be healed too so that I can undergo the complete Mercedes experience.

Thoughts/Suggestions?

Also, my "Check Engine" light is on.

That could well be the cause of your starting problem.
Get the code ( s ) scanned. ;)

Excuse me, but:

WOULD SOMEBODY REPLY TO MY DANG THREADS?!!!!!!!!!!!


:mad:


I need help too.

Duke,

You said your check engine light is on. Have you had the codes pull? Like mentioned earlier, is it not possible that the code which is being reported may lead to the problem you're having?

Let us know.

My manual says that this means there is a problem w/ the fuel injection system or emission control system.

I don't see how that could be contributing to the problem, but the manual also says that an on board diagnostic connector is located in the passenger compartment near to the parking brake pedal, allowing the accurate identification of system malfunctions through the readout of diagnostic codes. I don't know how do to this.

Please guide me through it.

you need to purchase an ODBII reader in order to pull the codes. The readers come with the instructions. Check EBAY. There is a good one that works off a Palm Pilot.

Since you have OBD-II, any garage, mechanic, etc. can pull the code.

With OBD-II, the code numbers are standardized for all cars.

Even many auto parts stores, like Auto Zone, will scan the codes for free.

Well, if the problem is in the fuel injection system, it surely could be the cause of the hard starts. No fuel, or low fuel flow, will make it difficult to start.

I would suspect the fuel accumulator.

It maintains residual pressure in the lines after the car has been shut off.

Residual fuel pressure is only an issue when starting a hot car. Fuel pressure is built instantly and is maintaining it is not an issue over night.


"My manual says that this means there is a problem w/ the fuel injection system or emission control system.

I don't see how that could be contributing to the problem, "

Before you can hope to fix this car you need a lot of training. The above quote indicates you have a lot to learn; actually it indicates you know almost nothing. Sorry to be blunt!

All the information required to address your problem is described in the archives.