daniel43v

Hello All,
New to the this forum, Not new to Auto,Boats, Motorcycles, and vintage car restoring. very mechanically inclined (very).
Here's the problem:


Recently purchased a 2005 E500 at a estate sale, it has only 16k original miles, The former owner had a little fender bender with his garage, Family made him quite driving.
Cars extremely clean(I mean new) other that the Bumper, fender, radiator and hood.


So I replaced the parts and ready its for paint ,I am trying to start it now. It will crank great but wont start.
What could it be??
What I have done....
First off I checked the fuses, the fuel pump relay also(also jumped it)andI can hear it run. Has new gas.
Only thing is on the dash it reads (car to low), So I checked everything with the Airmatic compressor, fuses and other components with it.
Would that stop it from starting?
Also would the CPS (crank censer) have something to do with it? I read that somewhere.
Had to put a new battery in it also, Battery is good.


Anything I'm missing, don't want to tow it to the dealer for something simple I'm overlooking.


Thanks in advance
DB.

optimusprime m1

Hi and welcome .It may be to do with the - car to low item i dont know if it will stop the car from starting or not. Other one that it can be is the CPS sensor this lets the ecu know its on tdc and ready for it to fire. Do you have a spark ? pull a plug lead off and put a spark plug in the end of it , hold it just off the metal part on the engine.Do use insulated pliers or grips and be careful or you will end up with a set of wings .Did you replace earth straps in the front wings ..

StarvingArtist

Back to basics. How old is the fuel? Fuel pressure? Spark? Don't boost it, start with fully charged batteries, front and rear.

daniel43v

Front battery???? Where?
I will check the spark tonight, I was thinking the ride height might set off a disable mode??
I did a 2001 clk this way(wrecked), no problems except the shifter adjustment was the problem.

daniel43v

Update:
Hit it with a little starting fluid, It tried to start, I stopped right there. tells me it a fuel delivery problem.
Need to test that part now.

homeofstone

Also, how old is the gas in the car?

daniel43v

new gas, I had no pressure at the top of the fuel rail, will do some electrical testing on the fuel circuit .
The 20 amp fuse is good, will test the relay tonight,
Any other fuel fuses I'm missing?Anywhere? just the two in the trunk?

optimusprime m1

You need to find the other fuse box ,i think you have more than one.

optimusprime m1

By the way Dan i am checking for you , but your profile is not telling me the model type of the car in question what W--- is it.

bbirdwell

http://www.pelicanparts.com/techarti...Index-W211.htm

http://www.pelicanparts.com/techarti...eplacement.htm

http://www.pelicanparts.com/techarti...mp_Testing.htm

daniel43v

Update,
all fuses are good, relay tested and good, fuel pump runs , no pressure at the front of the fuel rail. car will run on starter fluid, full of new gas.
took off cover on pas side fuel tank, full and pump runs, didn't take off drivers side fuel tank cover, Whats in that side? pressure reg.?
I know this is simple , just cant put my finger on it........
Should I replace the thing in the drivers tank?
2005 e500/16k miles/sat 9 months, front end damage/house
Dan

optimusprime m1

Dan i would thnk the = car to low = could be the reason it wont start. Is the car siting low or just the warning for it?.How old are the fuel filters ?

optimusprime m1

Dan did you push the outer ring on the fuel rail? Be sure you open it so fuel comes out .Put a rag or two in the area or it will go every where .Once you do this and you are sure you have no fuel up there .Then a sods law that its the pumps that have gone down and need replacing. But check the voltage at the pump .You know no voltage no fuel at the rail.. If you have fuel at the rail , and still no start , check the CPS values with DM ..

daniel43v

Checked the voltage, pressed the Shrader valve at the front of fuel rail, no gas and no pressure,
My mechanical genius friend helped me, all voltages are where its suppose to be, pump runs, no pressure,
I havn't charged the front battery yet, Could it be part of it?

optimusprime m1

Ho yes all batterys want fully charging up .They go in to limp mode but would not stop the engine running i dont think. No fuel at the rail i do think your pumps are faulty .As pump is running it only runs for a second or two . Pump can sound to be on but is pumping nothing .Sure fact no fuel at the rail means the pump has failed. So now it pu;ll off pipe time at the pump .Remove the screw on the pump to see if fuel is coming from it ..No way can you have no fuel, if pumps are on and working if they are any good. Or its a blockage from pump to injection rail do you have a accumulator on there

optimusprime m1

You say you changed the CPS yes .Was it new and from what place did you get it from?

The CPS sensor will be suspect if no fuel pump power after the initial start time , And after key turned , the time aprox 1.5 seconds .If no signal from CPS the computer needs to see the RPM to trigger the fuel pumps operation .Hope it helps me i would put the old cps back in .. You can knock the bottom of the tank to see if it starts the pump

cetialpha5

Just a side note that the fuel tank has a extended 15 year unlimited miles warranty if there's a smell of fuel in the cabin. You might want to make sure that the gas tank is full and that you don't smell any gas in the cabin. If you do, it'd be covered under warranty and I think the MB dealer replaces the tank and the fuel pump which is inside the tank.

herminshs

If the pump is running, but you have no pressure on top, then it's obvious that you have a blockage in the system somewhere. Check the filters, then go thru the system and see if maybe a rubber seal broke inside the lines?

I would start by going to the top of the fuel pump, where the feed tap in, and see if there's any pressure coming from the pump. Just because you hear the pump running, it doesn't mean that sediments built up in the tank over time and clogged the intake filter of the pump.

If that's ok then move thru the system, at this point at the very least you can rule this out
I'm no mechanic, just throwing my two cents since you seem to be stuck.

Good luck

daniel43v

Where are the fuel filters, Under the car ? and where?

optimusprime m1

Thats funny i know the pumps are under the floor at the rear ,and the filter is next to it see pictures .Still say its the CPS sensor .It will stop the ecu powering the pump if cps is shot.