electric help needed

[sasho67]

Feb.-19-2008Hi guys ,my name is Alex and am completely new to this forum ,if I do some mistakes ,please sorry.
OK ,I’ve got a 318ti last summer. It was not running , the engine has been overheated the cylinder head was warped. I put a new piston rings ,new head gasket and done a machine work on the cylinder head . Afterward I’ve got decent engine but still doesn’t run. There was a electric supply problem .The main relay did not get ground from the DME and fuel pump relay wasn’t powered . So ,I replaced the DME and got power to the fuel pump relay , and the electric components after it , but now the DME doesn’t ground the fuel pump relay and the ignition coil and injectors. U know when you turn the key ON , you hear the buzzing sound from the fuel pump – I don’t .I make sure the pump is OK. So I gave up.
The last chance I have is ,if the overheated engine burned somehow the crank position sensors , or camshaft sensor . I read somewhere ,if DME don’t get a signal from the crank sensors , or camshaft sensor it wont operate the ignition and fuel system . That’s my question , do you guys think that’s possible ? I’ll take any advise and thanks in advise .

[b.u.ti-ful]

What about the basic stuff?
Battery terminals clean.
Bad battery.
Engine ground strap connection bad.
Starter wiring loose.

[sasho67]

I ve checked everything ,everything.Battery,conectors,ground ,it crancks.Just dont start

[aceyx]

A bad CPS should throw a CEL code.

Sometimes, owners remove the bulb instead of fixing the problem. The computer will still store the codes though, so you can have them read.

[b.u.ti-ful]

Maybe its out of gas.

So, does it get spark?

Did you do a compression check after the engine work?

[AquaCali]

Did you have the new DME reset to match the chip in your key? The DME and keys are matched for theft protection.

[thesk8nmidget]

IIRC when you dont have the dme and key aligned it doesnt even crank

[sasho67]

No spark at all.I got the battery voltage to the ignition coil ,but no spark.So I assume there is no ground from the DME.And I didn't know the DME and the key shuold be alighned in someway.On the otherhand ,the engine cranks.Should I go to the dealr with dme and the key ,just that simple ?

[sasho67]

Yes ,there iis a OK ,I gues compression between 11,5 and 13 psi on the cylinders

[sasho67]

not psi

[b.u.ti-ful]

I copied this off of a performance chip site and it makes it sound like the DME has to match up with the key. I guess you'll have to call the dealer.

What is EWS-II? EWS-II is an additional theft-deterrent system that BMW installed in cars beginning in Dec 1994 (12/94). On cars with EWS-II the signal from the key must match up to a signal coming from the EWS-II and DME computers or the car will not start.

How does it work? The key for your BMW has a microchip embedded in it that sends an analog signal to an antenna within the ignition lock on the steering column. The antenna sends the signal to the EWS-II computer. The EWS-II computer then checks with the DME to validate the code. The car can only be started when the DME recognizes the code from the EWS-II computer. The key is simply turned, and by the time the ignition switch is reached, the EWS-II system has finished its processes and identified the electronic coding in the key and 'granted' starting permission.

[b.u.ti-ful]

Where did you get the replacement DME?

Did you put the original chip in the new DME?

[AlaskaBlue]

The DME does not need to aligned on a 1995 with EWS-II for 1996 and on with it requires alignment.

[sasho67]

Thanks you all ,it's seems you are giving me a solution after all this months,I should find that forum ,long time ago. The DME I replaced by miself,didn't put any chip in it - never hurd about it before. Never hurd EWS also .

[sasho67]

One more question,is it normal that I have to log in everytime I want to put a new thread
or there is a limited time I can that so ?