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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 08-19-2013, 07:50 AM
77midget 77midget is offline
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Questions before I break out the tools-07 335i starter

Hello all-

Normally lurk on here, but I am having an issue with my 2007 335i and now that my CPO warranty is up, I would like to just take care of it myself. My starter has had a number of hard cranks over the past couple weeks. The batter is less than 6 months old, and has ~12.5V across terminals and reads ~12.2 in the OBC hidden menu computer reading. Car stopped cranking. Accessories come on, and you can hear the fuel pump engage when the button is pressed. Zero starter activity. Voltage drops to about 11.8V on the OBC reading when starting is attempted.

I am thinking that it is the starter, given the difficult cranking and the fact that the battery is newish and was properly registered, etc, by a dealer (though it is NOT an OEM battery). Also, the fact that I notice V drop when attempting to start tells me that the car is sending voltage to the starter.

Am I on the right track? Do these starters react to a good poke by a wrench or hammer like old-school starters?

I am not averse to the work, as I routinely wrench on my Jeep and have the Bentley manual, but I just want to double-check my thinking before I go in and start digging my way to the starter.

Any help or advice would be appreciated.....I have searched the subject and found some resources, but not really any DIY write-ups or anything...perhaps my search-fu is weak....
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  #2  
Old 08-19-2013, 08:09 AM
luskombi luskombi is offline
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Questions before I break out the tools-07 335i starter

Sounds like the symptoms I had when my starter failed. To be sure check for voltage at the starter. Have a friend engage the starter button while reading your meter. Should have voltage on battery side. With my car I had 12 volts on battery side and 0 volts on starter side of solenoid. It's hard to reach but will rule out other components.

Last edited by luskombi; 08-19-2013 at 08:12 AM.
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  #3  
Old 08-19-2013, 08:19 AM
77midget 77midget is offline
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can this be done prior to the tear down? I was not able to get it pushed up into my garage and perform any more inspection, but will be doing this tonight, hopefully.
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  #4  
Old 08-19-2013, 08:25 AM
luskombi luskombi is offline
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Questions before I break out the tools-07 335i starter

Yes. It's tough to reach but doable. When I troubleshot mine I wanted to be certain it was the starter before taking the intake all apart or buying a starter. I taped paint stir sticks to my meter leads and was able to reach the terminals. At least on my 328 I could. You have to reach down between the intake tubes. Maybe there is less room under the intake on a 335?
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  #5  
Old 08-19-2013, 08:26 AM
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DSXMachina DSXMachina is offline
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Your symptoms are consistent with a bad starter solenoid which is within the starter shell. As a last ditch try to move it into your garage you can have an assistant whack it with a hammer or the end of a long steel rod while you hold the key over, oops, while you press the start button.
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Old 08-19-2013, 08:27 AM
77midget 77midget is offline
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That is a capital idea, and I just bought some bamboo plant stakes that would work perfect! I will have to see if I can maneuver to the starter terminals, though.
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  #7  
Old 08-19-2013, 08:28 AM
77midget 77midget is offline
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Quote:
Originally Posted by DSXMachina View Post
Your symptoms are consistent with a bad starter solenoid which is within the starter shell. As a last ditch try to move it into your garage you can have an assistant whack it with a hammer or the end of a long steel rod while you hold the key over, oops, while you press the start button.
yeah- this will also be tried if I can get to it...
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  #8  
Old 08-19-2013, 08:30 AM
77midget 77midget is offline
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I am also doing plugs, an ignition coil (P0303 code OBDII) oil change, and with this, would also do the intake manifold gasket as well. Some folks have said to replace the oil filter housing gasket....needed for 80k? Water pump was warranty replaced last year....
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  #9  
Old 08-19-2013, 09:58 AM
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DSXMachina DSXMachina is offline
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Are you aware of intake valve fouling and nutshell blasting? You're going to be R&R'ing the intake, might as well go the extra step.
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  #10  
Old 08-19-2013, 10:01 AM
77midget 77midget is offline
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I have not-tell me more?
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  #11  
Old 08-19-2013, 10:14 AM
77midget 77midget is offline
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so, just consulted the great and powerful Google. Very interesting-some of the symptoms that I have noticed in the past could be due to this. I am OCD about fuel grade usage, but you can never truly know....

Read a couple write-ups. For those who do this at home DIY style- what media blaster did you use? can you get away with a a 'cheapo-depot' Harbor Freight unit?

I am thinking that I could get a PTO day from work and have a 335i 'Day of Beauty'..........
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Old 08-19-2013, 10:47 AM
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DSXMachina DSXMachina is offline
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Quote:
Originally Posted by 77midget View Post
so, just consulted the great and powerful Google. Very interesting-some of the symptoms that I have noticed in the past could be due to this. I am OCD about fuel grade usage, but you can never truly know....

Read a couple write-ups. For those who do this at home DIY style- what media blaster did you use? can you get away with a a 'cheapo-depot' Harbor Freight unit?

I am thinking that I could get a PTO day from work and have a 335i 'Day of Beauty'..........
As recently as the past month there have been extensive threads in this sub-forum which would answer every question you have. 'Search' valve deposits, walnut shell cleaning, Harbor Freight and similar. Much to read!
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  #13  
Old 08-19-2013, 11:06 AM
77midget 77midget is offline
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thx- already diving into the search-found some good articles...
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  #14  
Old 08-19-2013, 01:19 PM
77midget 77midget is offline
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man o man! This sounds like a cool project-given some of the presenting systems that I have noticed, I suspect that I will find some dirty intakes if/when I crack it open...MY concern here right now is time....I need to get my car back on a paying basis- I have a Jeep that I can drive, but it is really not practical for me for extended periods of time. I think, however, that if I am going to take the time to break it down, I might as well just dive full in.....Going to check out the local HF and see about the availability of the tools. Also, I need to check the starter tonight...

On the starter check- Am I correct in stating that the proper check on this is to connect to the main positive lead on the solenoid and the ground lead to the other lug that powers the actual starter motor-then activate the starter?

Prior to this, I am going to try and just give it a 'nudge' and see what happens as that will diagnose it right off, and requires less accuracy than trying to connect those leads and activate the starter!
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Old 08-19-2013, 02:06 PM
jburke4689 jburke4689 is offline
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I did my valves with carb cleaner, small brushes and rags. Not nearly as good as walnut shell blasting and I expect to need to do it again soon (currently at 95k miles) but it did make my symptoms go away. I had stuttering on acceleration between 2500-3500 rpm and no codes. Plugs should come out during cleaning to find top dead center and ensure valves are closed. Intake removal helps with the oil filter housing gasket and starter access.
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Old 08-20-2013, 06:51 AM
77midget 77midget is offline
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For those who have done the starter replacement- anyone used the reman Bosch unit from NAPA? Trying to source the new one, and some prices are all over the map. I normally buy my stuff from Turner (maintenance mostly) but have not really had to buy any parts for my car up to this point...
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  #17  
Old 08-22-2013, 07:44 AM
77midget 77midget is offline
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need a little help-the normal places I have looked do not have the aluminum starter bolt kit that is needed for my 07 335i.....Understanding that it is recommended to replace these with the starter, need some referrals for some parts suppliers...
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Old 08-22-2013, 08:02 AM
luskombi luskombi is offline
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Questions before I break out the tools-07 335i starter

Here are some links. You'll have to confirm p/n's but I think they are same as my 328i.
This is where I get all my parts.

http://www.tomkinsonbmwparts.com/par...iagram=F272020


Bolt 1
07129903798

Bolt 2
07129903800

Have you discovered realoem.com? Copy and paste part numbers in the search box on your favorite supplier's website. I hope this helps.
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  #19  
Old 08-22-2013, 05:53 PM
jburke4689 jburke4689 is offline
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Quote:
Originally Posted by 77midget View Post
For those who have done the starter replacement- anyone used the reman Bosch unit from NAPA? Trying to source the new one, and some prices are all over the map. I normally buy my stuff from Turner (maintenance mostly) but have not really had to buy any parts for my car up to this point...
NAPA is good stuff. I would be comfortable with it in mine.
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  #20  
Old 08-23-2013, 09:56 AM
77midget 77midget is offline
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yeah I love NAPA and buy most of my Jeep stuff from them-their Bosch reman is over 200 without the core, though. I am not buying the starter until I am sure that that is what it is, anyway. I am digging into it today. Working from home to get back my 3 hr round trip commute, and using the time to dig in!
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  #21  
Old 08-23-2013, 01:13 PM
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DSXMachina DSXMachina is offline
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My wholesale cost for a rebuilt Bosch starter is $125.77, so there is room for you to perhaps get a better deal. Bosch rebuilts are worth any premium you pay. I use them exclusively when they are available.
Just called my supplier in Nashua and they are in stock.
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  #22  
Old 08-23-2013, 01:29 PM
77midget 77midget is offline
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I can get them for a similar price at Turner as well-might need to drive up to the North Shore-
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  #23  
Old 08-23-2013, 04:02 PM
77midget 77midget is offline
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UPDATE: man oh maneshevitz! I will post the pics soon, but here we are:

1. removed all the filter assemblies to get a peek at the starter. Rapped on it and the solenoid with a 1' socket extenstion.....started right up: BOOYAH-starter and solenoid are the root cause.
2. Started the excavation. With the Bentley and general knowledge/experience from car maintenance, and going slow, had everything stripped down in under 2 hrs, and that was with babysitting the new pup and chatting with our tenant!
3. So, then I got the manifold off and peered in. the thing that came to mind is a person who had not been to the dentist in 20 years.....OMG.

I have pics of each intake, and will post them as soon as I get them off the phone. Short story-mucho successo tonight. very happy.
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  #24  
Old 08-23-2013, 04:49 PM
77midget 77midget is offline
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Questions before I break out the tools-07 335i starter

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  #25  
Old 08-23-2013, 04:57 PM
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DSXMachina DSXMachina is offline
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Those are real bad! Good move. What's your next step? Reminder: Make sure nothing gets into your cylinders, and no debris 'splashes' into your intake manifold.

Last edited by DSXMachina; 08-23-2013 at 04:59 PM.
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