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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 07-16-2017, 04:59 PM   #21
Martenmeyer
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Quote:
Originally Posted by jfoj View Post
The engine starts with starting fluid, IF the OP had a Noid tester he would confirm the injectors are not triggering.

We have seen flaky keys where for some reason the EWS only partially recognizes the key and it will allow the engine to crank and often have spark but not trigger the injectors.

We are seeing more and more flaky keys that only partially work and if the OP only has a single key, this is a problem anyway.

So many of these cars on the 3rd to 6th owner at this point and only have 1 key which is BAD. Having a single key for any car is a BAD idea and can and will put you in a bind at some point.
I agree having one key is not very smart, however i got the car a few weeks ago from my friend and am selling it for him since he moved. Just trying to fix the car without spending too much money since im going to sell it right away. It looks like getting a new key might be the only option at this point though. Luckily i have 3 keys for my m3
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Old 07-16-2017, 04:59 PM   #22
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Forget oil in the cylinder, holding the throttle down, the engine ran with starting fluid so the injectors are not being triggered.

Assuming there are no blown fuses, my money is on a bad key.

Even if the key is not bad, getting another key quickly rules out a key related problem. While not cheap, you need 2 keys anyway and it is cheaper and quicker than towing it to a shop that will charge you 2-3 times what a key costs to tell you the key is bad!
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Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 07-16-2017, 05:01 PM   #23
Martenmeyer
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Forget oil in the cylinder, holding the throttle down, the engine ran with starting fluid so the injectors are not being triggered.

Assuming there are no blown fuses, my money is on a bad key.

Even if the key is not bad, getting another key quickly rules out a key related problem. While not cheap, you need 2 keys anyway and it is cheaper and quicker than towing it to a shop that will charge you 2-3 times what a key costs to tell you the key is bad!
Gonna get a new key and see what happens. If anyone else has any ideas please let me know. Thanks!
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Old 07-16-2017, 05:06 PM   #24
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Since your in SoCal maybe one of the more helpful Fanatics is close to you and can run a scan to see if there are EWS errors due to a flaky key to confirm what is going on, but if you order the key tomorrow AM, you should have it by Friday I would hope.

You could get it quicker from a local dealer, usually in 2 days, but you may end up paying WAY more than $162 for it.

Sure you could buy a Valet key for around $60, but you will still end up buying another keyfob anyway. I find the Valet keys pretty useless because if you lock your main key in the trunk you may not be able to get into the trunk with the Valet key unless you modify it.
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Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 07-16-2017, 05:31 PM   #25
Martenmeyer
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Since your in SoCal maybe one of the more helpful Fanatics is close to you and can run a scan to see if there are EWS errors due to a flaky key to confirm what is going on, but if you order the key tomorrow AM, you should have it by Friday I would hope.

You could get it quicker from a local dealer, usually in 2 days, but you may end up paying WAY more than $162 for it.

Sure you could buy a Valet key for around $60, but you will still end up buying another keyfob anyway. I find the Valet keys pretty useless because if you lock your main key in the trunk you may not be able to get into the trunk with the Valet key unless you modify it.
Yeah it would definitly be good to scan it, i only have a cheap Chinese obd2 scanner. Im thinking about buying a valet key locally for the $60 just to see if it fixes the problem first and then i can get a real key after.
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Old 07-16-2017, 05:48 PM   #26
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Do a search on this site.


When the oil gets washed off of the cylinder walls, the rings do not seal as good and you loose compression. Putting in some oil helps to seal the rings and restore compression if the walls have been washed.
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Old 07-16-2017, 05:53 PM   #27
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Do a search on this site.


When the oil gets washed off of the cylinder walls, the rings do not seal as good and you loose compression. Putting in some oil helps to seal the rings and restore compression if the walls have been washed.
Ok makes sense, but i was able to get the car to run for about 2-3 seconds on the starting fluid so shouldn't the compression be good?
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Old 07-16-2017, 05:53 PM   #28
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If you only have a single key, order a replacement keyfob. DO NOT waste money on a Valet key. You can get a keyfob online for around $156 as I recall, read this toward the end: http://forum.e46fanatics.com/showthread.php?t=1008294

Since the engine runs on starting fluid, this means either the fuel is contaminated, there may be a blown fuse for the injectors or the key is likely bad.

We have seen bad keys that allow Crank, no Start conditions. This is not how the EWS is supposed to work, but in the real world we see quite a few of these lately.

Can you point me to an example of this on here by a e46fanatic? I have only seen the car do nothing when starting with a bad key. I find it hard to beieve that the EWS acts differently at different times.
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Old 07-16-2017, 06:10 PM   #29
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Ok makes sense, but i was able to get the car to run for about 2-3 seconds on the starting fluid so shouldn't the compression be good?

With starting fluid it is so flammable that the spark is igniting the fluid. Gas requires a correct air to fuel ratio.


Did you check your e-Box fuses?

Check your e-Box fuel injector relay and DME relay.

Re-seat your connectors on the DME as well.

Last edited by BMWCaptain; 07-16-2017 at 06:11 PM.
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Old 07-16-2017, 06:22 PM   #30
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Can you point me to an example of this on here by a e46fanatic? I have only seen the car do nothing when starting with a bad key. I find it hard to beieve that the EWS acts differently at different times.
Here a just a few of the cases that come to mind, I am sure there other others if you choose to search. There can be no crank, crank no start or intermittent no crank or intermittent crank, no start conditions due to flaky keys. Yes there are other things that can cause similar problems, but the crank, no start situations seem to be be showing up more often. Not sure exactly why, but 10+ year old keys that have been dropped, run through the washer and dryer and just been banging around just do not last forever.

Luckily the problems have been more so with keys than the EWS or other parts so it can be an easy fix, especially for an owner than only has a single key.

http://forum.e46fanatics.com/showthread.php?t=1130822

http://forum.e46fanatics.com/showthread.php?t=1126673

http://forum.e46fanatics.com/showthread.php?t=1088904
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 07-17-2017, 02:33 AM   #31
Antti
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If you are 100% sure that fuel pump and pressure is okay, take computer and inpa software, check rpm reading from livedata when cranking.
That helps you to be sure that crank sensor is working okay.
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Old 07-17-2017, 03:21 PM   #32
Martenmeyer
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Originally Posted by BMWCaptain View Post
With starting fluid it is so flammable that the spark is igniting the fluid. Gas requires a correct air to fuel ratio.


Did you check your e-Box fuses?

Check your e-Box fuel injector relay and DME relay.

Re-seat your connectors on the DME as well.
Everything looks good, just took everything out and re-seated them.
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Old 07-17-2017, 03:22 PM   #33
Martenmeyer
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If you are 100% sure that fuel pump and pressure is okay, take computer and inpa software, check rpm reading from livedata when cranking.
That helps you to be sure that crank sensor is working okay.
Ok thanks, i will try to get this software but dont really have a way of doing this at the moment.
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Old 07-17-2017, 04:47 PM   #34
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Ok thanks, i will try to get this software but dont really have a way of doing this at the moment.
You can get the software easily (forum.e46fanatics.com/showthread.php?t=1126314)
The cable - http://m.ebay.com/itm/OBDII-16pin-In...%257Ciid%253A5

Last edited by armenh7; 07-17-2017 at 04:48 PM.
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Old 07-17-2017, 06:06 PM   #35
Martenmeyer
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Thanks for the info. It is not possible to get this software for mac, right? Might have to look into getting another cheap laptop.
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Old 07-17-2017, 07:39 PM   #36
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Thanks for the info. It is not possible to get this software for mac, right? Might have to look into getting another cheap laptop.
Just create a virtual machine. You can find windows xp iso's on the internet. I recommend oracle virtual box.
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Old 07-17-2017, 11:44 PM   #37
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Any old laptop running windows xp will be fine. Inpa runs fine even old T42 thinkpad.
I do recommend inpa for all E46 drivers. It is necessary when you have problems. Livedata features are best in my opinion. Also you can check all control modules individually for fault codes.

Last edited by Antti; 07-17-2017 at 11:46 PM.
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