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View Full Version : e36 M3 Problems, Please help.



BMWinAUS
02-28-2011, 06:19 PM
Alright if anyone can help...

My e36 1996 BMW M3 3.2L Manual. has 'died'.

So first my battery went flat. The result of that was the car spluttered to a stop. Put a external jump pack in the boot hooked up to the battery. Got home, then in the morning got a brand new battery put it in and then after a drive noticed the dash battery light was on. Then with the new battery, same thing.
So to try to get home I got the jump pack again and swapped battery's again with a (full) borrowed one. and now it has no kick, it turns over and has a little go at starting but that's it. Was stuck on the side of the highway for hours, ended up towing it home (and cause of my after market piece of shit bumper I had to remove the whole front bar on the side of the highway to tow it.) (p.s. the bumper isn't going back on, I **** it enough to rep no bumper for the time being.)

Fuel pump works and builds up pressure until it's extremely pressurised then stops. but no start.

Talked to BMW about it and they said it is possibly the alternator ($1200). and if so why did it start and drive with the jump park the first time?

Any help and or info would be appreciated.

Cheers' guys
Ryan

Average_Jerk
02-28-2011, 06:21 PM
alternator

BMWinAUS
02-28-2011, 06:29 PM
My Build Thread.

http://www.stanceworks.com/forums/showthread.php?t=12180

BMWinAUS
02-28-2011, 06:30 PM
alternator

How do you know?

Average_Jerk
02-28-2011, 06:33 PM
How do you know?
the car runs off the alternator. so if its not working properly, the car will die. A non functioning alternator will also trigger the battery light to come on. the car can however, run for a short period of time off the battery as a backup if the alternator isnt functioning. that is why you were able to drive a little after you swapped in a new battery. but draining the battery to nothing, can kill it beyond repair. so even a charge wont help at that point.

BMWinAUS
02-28-2011, 06:36 PM
Cheers' for the help man.

I'll be pulling out my alternator this weekend then.

Just a question so if I put a brand new battery in it again should it start again with full charge? (cause it isn't)
or as you said is it only for a little while after the alternator goes kaput?

Average_Jerk
02-28-2011, 06:38 PM
correct. the battery will start the car, and if no alternator is present keep it running for a short period of time.

BMWinAUS
02-28-2011, 07:03 PM
hmm but that's the thing with a brand new battery and even tried with a fully charged jump pack on it also. and it still wont start. no doubt that might be the main problem but by it not starting i think there is another problem also.

I also have disconnected my air-con (recently have replaced a capacitor in the air-con control), + my head-unit and amps.

Average_Jerk
02-28-2011, 07:07 PM
a jump pack isnt a constant source of power. it is only designed to get it started, so the alternator can take over and keep the vehicle running and charge the battery. if the new battery you put in was already drained, you could have killed cells in it. a battery is made up of 6 cells. if one of those cells were to die, it would bring the batteries capacity down below 10v. which is less than a car needs to get started. Also if you are using a jump pack on a battery with dead cells, it will not work. if you remove the battery completely from the system and only use the jump pack, it should crank strong but not stay running.

BMWinAUS
02-28-2011, 07:13 PM
Hmmm Cheers 'Insert name here'
you have given me much to ponder upon.

Zic
03-01-2011, 04:49 AM
its the alternator. but 1200$ for one?!?!?! someone is trying to rip you off. buy a used one for 50$ or something like that (thats what i normally sell them for) or take it of, and get it refurbished. 100$ish. takes 15mins to take it out, give or take.

StancE36
03-01-2011, 03:40 PM
its the alternator. but 1200$ for one?!?!?! someone is trying to rip you off. buy a used one for 50$ or something like that (thats what i normally sell them for) or take it of, and get it refurbished. 100. takes 15mins to take it out, give or take.

EXACTLY what I was thinking.

BMWinAUS
03-01-2011, 05:59 PM
Yeah $1200 is from coastline BMW.
Will do that. Cheers' guys and if it's not that, I'll be back to steal some more knowledge.

Maro
03-06-2011, 08:24 AM
Dont't buy whole alternator,and used one becouse it would be also dead. Replace only brushes modul inside it. After that check the voltage, it's should be about 14,2-14,3 VDC when the engine running.

BMWinAUS
03-06-2011, 05:08 PM
Dont't buy whole alternator,and used one becouse it would be also dead. Replace only brushes modul inside it. After that check the voltage, it's should be about 14,2-14,3 VDC when the engine running.

But my car doesn't run so I cant check the voltage of it.

Maro
03-06-2011, 11:23 PM
replace brushes first, then measure.
check aku also, it have to be about 12,4-12,5 VDC engine should be off then.

when you take it out I suggest to check bearing and replace if necessary.

E36
04-07-2011, 11:37 PM
So I did as you all said alternator was fully rebuilt... and still nothing, no kick or anything. it will kick over for a second or two if you spray fuel into the air intake but then just splutters and stops.

Any help before I take it to DUN DUN DAH... BMW.
Cheers guys!

Ohh new account also. Cheers'

Zic
04-08-2011, 04:50 AM
well, its because the battery is empty. So put a jumper cable on it, meaning putting cables between the two batteries, on being on your car, and the other being in another car that is running (charging with his alternator)

the fuel pump is only there to pressurize the system, meaning its not suppose to be running all the time, if the engine lacks fuel, the pump to switch back on.

And what you are saying now, it sounds like your battery has not enough "juice" to fire up the engine.

K.rischan
04-08-2011, 05:57 AM
+1 for the alternator.
If this isn' working the car will die (and the battery doesn't charge).

Zic
04-08-2011, 01:25 PM
+1 for the alternator.
If this isn' working the car will die (and the battery doesn't charge).

reading owns you. He got the faulty alternator sorted, but now the car wont run. My opinion is right above your post.

Bimmerteck
04-08-2011, 01:36 PM
You'll need to scan it, if the voltage at the LKM drops off before the car is shut off it can get out of sync with the EWS module and the cluster, causing issues like the fuel pumps not running that I doubt you'll have the tools to fix. BMWs do not generally take well to swapping in batteries one after another with varying voltages and attempting to continue to drive the car. Next time the alternator or any idiot light pops on on the dash turn it off and have it towed. It will come out cheaper in the long run and be less frustrating.

E36
04-08-2011, 09:23 PM
reading owns you. He got the faulty alternator sorted, but now the car wont run. My opinion is right above your post.

Yeah I got a brand new battery also. but it just turns over constantly.



You'll need to scan it, if the voltage at the LKM drops off before the car is shut off it can get out of sync with the EWS module and the cluster, causing issues like the fuel pumps not running that I doubt you'll have the tools to fix. BMWs do not generally take well to swapping in batteries one after another with varying voltages and attempting to continue to drive the car. Next time the alternator or any idiot light pops on on the dash turn it off and have it towed. It will come out cheaper in the long run and be less frustrating.

The fuel pump works. Has pressure upto the filter and probably taking off the fuel rail to see if its getting pressure.

yeah I learnt the hard way. I'll probably go to BMW.

Masonbarnard
04-09-2011, 06:55 PM
for sure alternator. PLEASE PLEASE do not pay 1200 to replace your alternator....
by a used one / dont take it to BMW dealership, find a reputable performance shop, or bmw shop around you and they will do it for much cheaper.

andybob
04-09-2011, 08:08 PM
for sure alternator. PLEASE PLEASE do not pay 1200 to replace your alternator....
by a used one / dont take it to BMW dealership, find a reputable performance shop, or bmw shop around you and they will do it for much cheaper.

Apparently you fail at reading posts.

He did get a new alternator and battery and now the car will still not start.

skyduk
04-10-2011, 11:35 AM
what is the mileage?

edit: also check the sparkplugs, maybe they're greasy (don't know the right word:o)

nellydragracer
04-10-2011, 04:01 PM
Have you checked it for a spark? Always check the basics first, e.g fuel, spark, fuses, relays etc. could be something as simple as a popped fuse.

E36
04-10-2011, 07:25 PM
@Masonbarnard
Ignorance is bliss.

@skyduk
280xxx. so it is rather high...

@nellydragracer & @skyduk
Well it runs if you spray fuel into the intake so yeah the spark plugs are working.


Checked fuel tank, fuel pump and line yesterday and it seems to have no fuel in the drivers side of the tank (right), so since a couple of diagrams I have found show fuel does fill that side. so I shall siphon fuel from the passenger side to the drivers side. since it seems that the current siphon isn't working, will update.

If any of you see a problem with that let us know cheers guys.

nellydragracer
04-11-2011, 07:53 AM
I know the fault well... Had an e60 530d in work with the exact same fault, for some reason it emptied one side of the tank. Put some more diesel in it, fired up a treat an it hasn't happened since.

E36
04-11-2011, 05:22 PM
I know the fault well... Had an e60 530d in work with the exact same fault, for some reason it emptied one side of the tank. Put some more diesel in it, fired up a treat an it hasn't happened since.

Shall try it tonight. cheers man.

E36
04-13-2011, 05:06 PM
Put fuel in the drivers side... 2nd go fired up.

Now to finish putting in the zero clearance shocks.

Cheers everyone!

And the battery light is now off so all of you that suggested the alternator, cheers.