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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E65 / E66 (2002 - 2008)

7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

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  #76  
Old 11-15-2012, 06:08 AM
N900WM N900WM is offline
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Location: Finger Lakes, NY
 
Join Date: Aug 2012
Posts: 15
Mein Auto: Everything
Update:
The car never really went back to running properly. In fact, it started quitting out of the blue and would not run worth a $hit. I have been to busy to mess with it so it's been sitting. Took it to the dealer and of course it ran perfectly.
They tell me both high pressure fuel pumps are AFU. Replacing all under warranty. Said the injectors were suspect too so those are now new. Glad I went for the warranty!!!
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  #77  
Old 12-13-2012, 07:14 AM
gregs76alfa gregs76alfa is offline
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Location: Altoona PA
 
Join Date: Dec 2012
Posts: 1
Mein Auto: 760 and 330xi
gregs76alfa

Quote:
Originally Posted by lawandorder39 View Post
Finally good news. Monday I decided to really look at the ignition system to figure out why the misfire in cylinder 2 remained. I took my multimeter and probed the connection wire that connects to the coil for cylinder #2. The brw wire is ground, the green wire is a steady 12 vlt supply and the red wire is a pulsating ground of 2-3 vlts from the (ECM) Electronic control module. I was not getting a pultsating return voltage from the red wire. Both have to work because a fault at either these two circuits will create a misfire. Make sure your coil and spark plug are good. I then disconected my ECM for 10 min then reconnected everything. Then before cranking it, I scanned it with my scanner code reader one more time and cleared the misfire fault code in cyclinder 2. Then started it up and that did it, fixed at last. Took it for a long test drive around town, over bridges to put a heavy load test on the engine and it passed the test. I should have did all this at first before going to the stealership BMW dealer. They got me for $1300.00. They ran dianostic, then asked me did I change the profile gaskets when changing the plugs. That cost me $1300 for nothing. They new what was wrong with my car but wanted to keep mis-leading the real issue just to get more money out of me. They even suggested tearing the engine down again to check the vanois valve or something. Then said if that was not the problem they would charge me to put it back together, another $800 bucks. I hope this is helpful to you and all others with simular issues.
When you disconected the ECM did you have to disconect the battery first? I want to try this but am wondering if I will lock up my radio and lose information on my electronic key fob.
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  #78  
Old 12-13-2012, 07:20 AM
N900WM N900WM is offline
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Location: Finger Lakes, NY
 
Join Date: Aug 2012
Posts: 15
Mein Auto: Everything
Mine is still AFU and is back at the dealer.
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  #79  
Old 12-13-2012, 05:18 PM
rsbolin@me.com rsbolin@me.com is offline
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Location: Greenville, SC
 
Join Date: Jul 2011
Posts: 74
Mein Auto: 2004 760i
I am there with you on my 2004 760i with 86K miles. Dealer says HPFP on bank1 needs replaced and they are certain that the HPFP on bank 2 will fail, too. $8,000 to replace both. No warranty. I have owned the car 6 weeks and put less than 150 miles on it. Too darned unsafe to drive because of the stalling that occurs without notice. At least you have the warranty. Be thankful for that.
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  #80  
Old 12-14-2012, 05:04 AM
N900WM N900WM is offline
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Location: Finger Lakes, NY
 
Join Date: Aug 2012
Posts: 15
Mein Auto: Everything
Quote:
Originally Posted by rsbolin@me.com View Post
I am there with you on my 2004 760i with 86K miles. Dealer says HPFP on bank1 needs replaced and they are certain that the HPFP on bank 2 will fail, too. $8,000 to replace both. No warranty. I have owned the car 6 weeks and put less than 150 miles on it. Too darned unsafe to drive because of the stalling that occurs without notice. At least you have the warranty. Be thankful for that.
I feel for you Brother. These cars are great until...
I have an extended 3/36K and once I'm close to the end...it's gone. No choice. I won't be able to afford it.
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  #81  
Old 12-14-2012, 06:32 AM
new760Liowner new760Liowner is offline
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Location: Nor Cal
 
Join Date: Aug 2012
Posts: 120
Mein Auto: E66 760, E38 750, E34 540
If anyone does pay to have the HPFP replaced on the N73s, please request to keep your old ones so that someone
or a shop can have a look to see what failed inside the pump. Unless they cut you a discount on the replacement HPFP,
there is no reason they should keep the old ones.
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  #82  
Old 11-19-2015, 07:58 AM
fmahjobi fmahjobi is offline
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Location: nashua, nh
 
Join Date: Aug 2010
Posts: 39
Mein Auto: BMW 2004 745i
Quote:
Originally Posted by marcusgold View Post
Not my place to say, as I have not mechanical education. However, regarding the "slight hesitation and surge", once my oil leak and vacuum were fixed, I no longer experienced the same issue I had prior to the fix.
The oil leak you are referring to was it from the Alternator Bracket Gasket? My 2004 e65 has a rather bad leak from that gasket which i have not gotten to repair yet. My car has increasingly gotten worse during cold start where the engine runs rough and the RPM surges up & down. I am also thinking it may be a defective MAF sensor.
__________________
2004 E65, 171k miles

DIYs done:
- Spark Plugs and Ignition Coils
- Water pump
- Thermostat
- Flex Disk
- Transmission Oil and Filter
- Tie Rod
- CCVs
- Secondary Air Pump hose cracked
- Brakes & Rotors
- Windshield washer fluid leak
- Broken coolant vent pipe
- Alternator Bracket Gasket oil leak (done at indy)
- Alternator

DIYs to be done:
- Transmission gear shift issue 1st to 2nd
- iDrive not working
- Seat Restraint air bag lights on
- Engine smokes after sitting idle
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  #83  
Old 11-19-2015, 09:17 AM
Matzan Matzan is offline
Registered User
Location: Rochester, NY
 
Join Date: Mar 2011
Posts: 13
Mein Auto: 760i / 545i / 750iL
Hi,

I had a very significant oil leak at an o-ring type gasket that seals the alternator bracket to the engine block. I understand that the gasket seals ports in the block that are intended for an auxiliary oil cooler for special applications. I have had this gasket leak happen to both my 04 545i as well as my 05 760i. The leak was bad enough to cause issues with my alternator due to the oil getting into the alternator and I suspect creating short circuiting. When I replaced the gasket, I had the alternator re-built and the shop reported excessive oil inside the alternator. The alternator to block o-ring gasket is very low cost, but the effort to replace the gasket is significant. The 545i was more difficult as the motor mount bolts through the alternator bracket. Removal of the bracket requires unbolting the motor mount, jacking up the engine a bit, and removing the motor mount before the alternator bracket can be removed. a couple of the motor mount bolts were a bit challenging to access but I was able to get at them using a universal jointed socket for the rear and a short wrench for the top one. The alternator and hydraulic pump must be unbolted also. The 760i with the V-12 was not quite as difficult as the motor mount does not interfere with the alternator bracket. Still a bit of a job working off jack stands.

As far as misfire, low voltage seems to wreak havoc on the ignition system. I battled misfire codes in the 760i for years and ultimately realized that low voltage at starting caused these misfire faults. I had an electrical fault in one of the convenience access door handles causing the battery to dischsrge to a limit when the car sat for more than several days. Upon starting I frequently had misfire codes and rough running until I shut off and re-started. Additionally, the coils seem to have a limited life span and I have replaced most of the coils at this point at least once. Be careful to purchase legitimate coils as compared to Chinese copy cats. Also, make sure to keep the low voltage side of the coil grease free, clean, and corrosion free contacts. I'm not certain, but I think poor contacts at the low voltage connector caused issues that I corrected with cleaning and WD-40.

And one more major issue I had with the 760i is electrical failure of the fuel injectors. There appears to be a weakness to the electrical side of the injectors used on the V-12 as I know others that have had injector failures. At this point I have replaced all fuel injectors. And yes, after 5 years of fun, I can now remove the 760i air intake in 20 minutes with my eyes closed and one hand tied behind my back. Despite 220,00 miles on the 545i, I have yet to have an injector fail, so I am guessing there must be a significant difference between the injector electrical circuitry used in the V-8 as compared to the V-12.
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  #84  
Old 11-19-2015, 10:45 AM
fmahjobi fmahjobi is offline
Registered User
Location: nashua, nh
 
Join Date: Aug 2010
Posts: 39
Mein Auto: BMW 2004 745i
Thank you so much for your detailed reply.
__________________
2004 E65, 171k miles

DIYs done:
- Spark Plugs and Ignition Coils
- Water pump
- Thermostat
- Flex Disk
- Transmission Oil and Filter
- Tie Rod
- CCVs
- Secondary Air Pump hose cracked
- Brakes & Rotors
- Windshield washer fluid leak
- Broken coolant vent pipe
- Alternator Bracket Gasket oil leak (done at indy)
- Alternator

DIYs to be done:
- Transmission gear shift issue 1st to 2nd
- iDrive not working
- Seat Restraint air bag lights on
- Engine smokes after sitting idle
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  #85  
Old 11-19-2015, 03:05 PM
alcer123 alcer123 is offline
Registered User
Location: Corvallis, Oregon
 
Join Date: Jan 2012
Posts: 3
Mein Auto: 760LI
Thanks for you valuable information but

I am getting rid of this car, as I cannot afford to support its maintenance anymore. I have to agree that it is the most comfortable car I have ever driven. I wish I had a house and a garage where I could work on it, as I have an electronic engineering and software background but unfortunately I am living out of my house and renting and making less money than 10 years ago. I will provably never buy another BMW but it was a nice ride. Good luck to all of you with your beemers.
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  #86  
Old 11-19-2015, 03:51 PM
fmahjobi fmahjobi is offline
Registered User
Location: nashua, nh
 
Join Date: Aug 2010
Posts: 39
Mein Auto: BMW 2004 745i
Quote:
Originally Posted by alcer123 View Post
I am getting rid of this car, as I cannot afford to support its maintenance anymore. I have to agree that it is the most comfortable car I have ever driven. I wish I had a house and a garage where I could work on it, as I have an electronic engineering and software background but unfortunately I am living out of my house and renting and making less money than 10 years ago. I will provably never buy another BMW but it was a nice ride. Good luck to all of you with your beemers.
I have owned 2 BMWs 1994 740i and 2004 745i. I have to say that BMW quality has gone down big time. The type of the problems that I have experienced with my car especially with the e65 is very disappointing. Engine smokes, engine oil leak, transmission issue, electronics (iDrive) issue are among the many that you do not want to have on a car like this. They will not be worth fixing even if you can do it. I will never buy a BMW again. They look fantastic but the problems are just too many to keep up with.
__________________
2004 E65, 171k miles

DIYs done:
- Spark Plugs and Ignition Coils
- Water pump
- Thermostat
- Flex Disk
- Transmission Oil and Filter
- Tie Rod
- CCVs
- Secondary Air Pump hose cracked
- Brakes & Rotors
- Windshield washer fluid leak
- Broken coolant vent pipe
- Alternator Bracket Gasket oil leak (done at indy)
- Alternator

DIYs to be done:
- Transmission gear shift issue 1st to 2nd
- iDrive not working
- Seat Restraint air bag lights on
- Engine smokes after sitting idle
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  #87  
Old 02-21-2016, 07:07 PM
fmahjobi fmahjobi is offline
Registered User
Location: nashua, nh
 
Join Date: Aug 2010
Posts: 39
Mein Auto: BMW 2004 745i
Quote:
Originally Posted by marcusgold View Post
Not my place to say, as I have not mechanical education. However, regarding the "slight hesitation and surge", once my oil leak and vacuum were fixed, I no longer experienced the same issue I had prior to the fix.
I had a bad oil leak from the alternator beaker gasket. The leak has been fixed last week.

I also think I have a vacuum leak. Where was the vacuum leak on your car?

Thanks
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760i, e65, m73, rough, v12


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