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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #1  
Old 10-25-2019, 02:15 PM
rphinny rphinny is offline
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Fuel, but no spark

Good Evening,

Background: I'm good at troubleshooting and have done everything I can up until this point, to include searching around the forums for a long time.

Actions taken up until now:

So, to start, the starter died. Took it to go get replaced and it was successfully replaced. Cranks like a champ. Now... it won't start up.

Fuel pressure is good, battery is good and matched w/ the vehicle. I tested the spark, and have no spark whatsoever at the plugs when I test the coils. I haven't tested the output utilizing a multimeter at the connector, BUT, none of the coils are getting spark.

In addition, a couple ground wires (brown wires) and on #2 cylinder, the white wire/blue stripe was partially exposed due to a rodent earlier in time (the real cause I'm guessing).

So, needless to say, the wires were disturbed at one time and during the attempts to start it after the starter died, and potentially the white wire/blue stripe touched one of the exposed ground wires or touched the block.

Could this have fried either the DME or something else?

Thanks for your help!

Ryan
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  #2  
Old 10-25-2019, 04:06 PM
Markst Markst is offline
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Engine? Year?
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  #3  
Old 10-26-2019, 07:17 AM
rphinny rphinny is offline
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2011 E70, w/ an N55 engine.
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  #4  
Old 10-26-2019, 03:20 PM
rphinny rphinny is offline
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UPDATE:

So, I went and started looking harder at the engine... I think someone at one point swapped the engine out for a 335i engine. The ECU is mounted underneath the intake manifold vice in the corner w/ the power distribution box under the outside air intake. Does that even make sense?
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  #5  
Old 10-28-2019, 02:08 PM
TeamCamHD TeamCamHD is offline
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A Fuel Pump Relay problem would explain no spark and that was the case with my 6cyl E70. The part is cheap <$20.
It's located in the right (passenger side) rear compartment and is a very light silver green in color.
For $20, that would be my next move
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  #6  
Old 10-28-2019, 02:20 PM
twh twh is offline
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Quote:
Originally Posted by TeamCamHD View Post
A Fuel Pump Relay problem would explain no spark and that was the case with my 6cyl E70. The part is cheap <$20.
It's located in the right (passenger side) rear compartment and is a very light silver green in color.
For $20, that would be my next move
My 2009 X5 3.0 also needed a new fuel pump relay.

But, his is a 2011 and I think they switched to the EKPS fuel pump module by that time. That has an integrated fuel pump relay function and not a discrete external relay.
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  #7  
Old 10-28-2019, 02:21 PM
Markst Markst is offline
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No fuel pump relay on the N55.
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  #8  
Old 10-29-2019, 04:23 PM
rphinny rphinny is offline
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Pulled codes, here's some screenshots. What are your thoughts?
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  #9  
Old 10-29-2019, 04:47 PM
twh twh is offline
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You have a rash of not-connected errors. My debugging would first start looking for connectors that may have been messed with that aren't seated properly. And, go over the grounds. Another thing could be rodent damage to a wiring harness.

Did the car ever work?
Has anyone been in the ECU box? There are some big ass connectors inside there.
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  #10  
Old 10-29-2019, 04:50 PM
rphinny rphinny is offline
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Thanks for the reply, the harness damage was isolated to ground wires and a single supply to a coil, the rest of the harness was fine up until they disconnected it. Normally, the DME box is up by the firewall on the passenger side, right?

On this engine, the DME is under the intake manifold like the 3 series...and yes, car has run flawlessly for the last 2 years I've owned it.
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  #11  
Old 10-29-2019, 04:56 PM
rphinny rphinny is offline
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Just checked the connectors at the ECU, and they're not obviously disconnected.

What i'm worried about w/ the harness is that they DIDN'T disconnect the harness and let it pull on the wiring and then subsequently pulled the wiring out of the connectors.
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  #12  
Old 10-29-2019, 10:11 PM
twh twh is offline
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Quote:
Originally Posted by rphinny View Post
Thanks for the reply, the harness damage was isolated to ground wires and a single supply to a coil, the rest of the harness was fine up until they disconnected it. Normally, the DME box is up by the firewall on the passenger side, right?

On this engine, the DME is under the intake manifold like the 3 series...and yes, car has run flawlessly for the last 2 years I've owned it.
I don't think you have a rogue DME. That's where it is on your model according to this diagram:
https://www.newtis.info/tisv2/a/en/e...-unit/Dv0OTtDo
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  #13  
Old 10-29-2019, 10:28 PM
Tekken24/7 Tekken24/7 is offline
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You have a ton of open circuits there. I don't think the chewed wires at your coil isn't your only issue. And the fault in your last pic seems like you're locked out ews faulty message may need a realignment
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  #14  
Old 11-01-2019, 06:59 PM
rphinny rphinny is offline
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Thanks for the replies everyone, as soon as I get to it this weekend, I'll post what the cause was so people won't have to deal w/ what I've dealt with for weeks heh.
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  #15  
Old 11-01-2019, 09:01 PM
Tekken24/7 Tekken24/7 is offline
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So it ran for 2 yrs no problem. Now you have a bunch of faults "after "a starter replacement. Might want to step back and figure out what was done. If I remember correctly to replace the starter on said N55 the intake manifold HAS TO be removed. Might want to look in that vicinity and make sure all connectors and grounds and what not are properly secured. Honestly if you're not doing the work why not take it back to who did the replacement.
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  #16  
Old 11-02-2019, 04:59 AM
pshovest pshovest is offline
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Maybe I missed it, but did it ever run after shop replaced the starter?
Crank position sensor is in vicinity of starter. Make sure it's connected and no signs of damage.
You say you have fuel. Does this mean you have fuel pressure or are plugs actually wet?

Last edited by pshovest; 11-02-2019 at 07:28 AM.
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  #17  
Old 11-02-2019, 08:19 AM
twh twh is offline
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Just thinking out loud...

starter replaced
DME under intake
the starter is under the under intake
big ass connectors and wiring harness in the vicinity
==> something happened there
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  #18  
Old 11-07-2019, 05:22 PM
rphinny rphinny is offline
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UPDATE: Sorry, I've been working a lot, but it was wire pulled from the connectors that connected to the DME. The shop that replaced the starter paid for the rewiring of the connectors and all is good.
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