Who Dunnit? (35d missing bolt after service(s))

[elandfill]

Greetings.. need to pin the rose on who to be mad at..

Long story short, the lower torx bolt on the EGR was loose AND the top EGR bolt on the L bracket was missing (and located under the radiator fan - someone dropped it and just said the heck with it).

2010 BMW X5 35d

Bought the car a year ago.. and have since done the following.. in this order:

1) replaced injector #6 since the bulkhead rain diverter deteriorated and water seeped into the injector. Yes, there's a SIB and extended warranty, but not for diesel (to be discussed in a different thread).
AT BMW Indy Shop in Idaho

2) Takata airbag recall
AT BMW Idaho

3) SCR Tank recall replace
AT BMW IDaho

4) Engine overheating on road trip.. radiator flush, pressurize tank, inspected, replaced expansion cap... did NOT fix problem
AT BMW Indy Shop in Reno

Turns out, overheating was due to corroded thermostat I replaced on the road (at friend's house in SF). To access, we removed EGR (and radiator fan), and noticed the bolt missing up top AND the loose torx at the flange. The top bolt... we located under the radiator fan.. so it was 'dropped' during an earlier repair and the tech. just. left. it. out.

SO.. who in the above 4 repairs would have needed to pull (or loosen) the EGR???
Thus, who may have potentially left the missing bolt, thinking I wouldn't find it

Pretty sure #1 pulled the EGR to release the throttle body and access the plenum up top.. but after that??

thanks!

P.S. YES, I am disappointed the tech in Reno couldn't diagnose a failed thermostat.

[josiahg52]

I think during injector number 6 replacement. I just did glow plugs and thermostat and now have a DTC, but no light, for EGR temperature plausibility.

I, too, share your assessment of the Reno service department. In short, I briefly considered having them change the oil and filter mid-cross country trip/vacation. It was 42 day marathon with a lot of driving. Great fun, but I digress. I did not get a good feeling there while talking to them. Went to their service department, who were great, got a filter, bought some oil from Pep Boys and drove up to see my brother in Oregon. Changed them in his driveway.

[AlpineX]

Originally Posted by elandfill

Pretty sure #1 pulled the EGR to release the throttle body and access the plenum up top..

Nope.


BTW, the L bracket (if what Im thinking youre referencing matches) is related to an original recall to reduce flex on the EGR coorler.... unless there is a dealer or original owner you can fall back on, you may be on your own.

[smassey321]

Most of us are not on our original EGR cooler. Yours probably was changed under warranty.

Loose bolts allow hot exhaust to hit the thermostat which can make big mess. Good thing you caught it early.

L bracket SIB PDF attached.

[ard]

I assume this is just an idle curiosity, right?

Nobody gonna own this one.....