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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 10-19-2012, 09:13 PM
k-love k-love is offline
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03 745Li Big Problems :cry:

Hi All,

This is only my second post here. It's going to be somewhat long winded, but please bear with me. I have an 03 745Li (ive had it a little over a year). I have a laundry list of issues:

Oil Leak-- it has been leaking oil for some time. However, it appears to be getting progressively worse. Indy shop says valve cover gaskets need replacement for $1400. Is that a good price? Could it be something else?

Coolant Leak-- The car overheated...i took it to the shop..they say the cylinder heads look to be good and i didnt crack anything. The following was replaced: expansion tank, expansion tank hose, upper radiator hose, etc. A few weeks later, low coolant warning comes back on .....they say maybe i hit an air pocket, or some BS excuse like that, refilled my coolant and sent me on my way...a week later, low coolant light comes on again...they tell me they did several pressure tests, and there are no leaks in any of the hoses, therefore, it must be leaking inside the engine, indicating head gasket issues. The low coolant warning comes on maybe every 3 days now (I dont drive much). However, from what I have read during my research on these forums, I would have constant white smoke out of the exhaust while driving. Is the shop right, or wrong on this one?

Ignition Coils-- car sputters while driving and idling. The OBD said i had 3 bad coils...shop replaced 2, and didnt do the third, because they say its related to issue #1 w/valve cover gaskets, and oil leaking into the spark plugs, or something to that effect (im not a car guy). They said it will just burn out again because oil is being dumped in there.

Heat blowing cold air --- is this related to my coolant issues? I read something about warm coolant not getting somewhere that it needs to be, or something to that effect.

check engine light and engine malfunction warning on idrive - im pretty sure this is related to ignition coil issue

any suggestions offered are greatly appreciated. thanks.
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  #2  
Old 10-19-2012, 09:39 PM
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gmcclintock gmcclintock is offline
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About your coolant leak, where is it coming from you might want to check the vally (the bottom of the V in V8) between the 2 banks of the cylinders it may be the dreaded Weephole leak. Do a search on here for "weephole" that might provide you information on it. I'm I live in Phenix City/Columbus and if I was in town I wouldn't mind coming by to check on it for you but I'm out of the country now so you would have to do it yourself. If you can get to Columbus you should take it to an Indy called "Sports and Imports" they might be able to give you a solid answer.
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  #3  
Old 10-19-2012, 10:28 PM
gotrice415 gotrice415 is offline
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Klove, what state do you live in? If you're local I would like to diagnose for you.
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  #4  
Old 10-20-2012, 11:43 AM
k-love k-love is offline
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Im outside of Atlanta GA. The indy shop has assured me that its not the dreaded weephole issue, as I constantly asked them that. Any other ideas?
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  #5  
Old 10-20-2012, 12:48 PM
johndade johndade is offline
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Check the coolant sensor it is known to leak. I believe its on the bottom coolant hose.

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  #6  
Old 10-20-2012, 02:05 PM
SFbay SFbay is offline
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It's a 100% wheep hole and it's related to cabin heat. Try to rev your engine and you'll get heat. Your shop knows nothing about cars. N62 has self bleeding cooling system-so no air pockets if no leaks.
Valve cover gasket is very common thing. 500$ parts 300$ labor usually
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  #7  
Old 10-20-2012, 02:17 PM
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sirstopher sirstopher is offline
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Quote:
Originally Posted by k-love View Post
Im outside of Atlanta GA. The indy shop has assured me that its not the dreaded weephole issue, as I constantly asked them that. Any other ideas?
Dont trust them on that one, I took my car in for a full inspection before I bought it and another time as it was free when I got my battery replaced. One month later I had to replace the coolant pipe.

Could very well be the valley pan gasket.

Sounds like you need a second indy look at the car.

I did on mine, I thought they were crazy. Cost me 150.00 for two different shops to look at the car.
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  #8  
Old 10-20-2012, 02:19 PM
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sirstopher sirstopher is offline
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Quote:
Originally Posted by SFbay View Post
It's a 100% wheep hole and it's related to cabin heat. Try to rev your engine and you'll get heat.
My car did not do this?
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  #9  
Old 10-20-2012, 02:42 PM
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BimmerBrad7 BimmerBrad7 is offline
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How many miles do you have??
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2005 BMW 745 LI Sapphire Black

22's, AC Schnitzer Kit, H&R Lowering Springs, Tinted tails and Signals, AC Schnitzer
Carbon Door Pillars, Cross Drilled and Slotted Rotors, Tuner Mod, Tinted Windshield,
30% Tint all the way around, and some other stuff I forgot.
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  #10  
Old 10-21-2012, 10:05 AM
k-love k-love is offline
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Thanks all for the suggestions so far. My plan tomorrow is to take it to another indy and get a second opinion.

I have roughly 105K miles on it.

So basically what im gathering here, is that $1400 is waaaaay too much to pay for valve cover gaskets?
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  #11  
Old 10-21-2012, 10:42 AM
Khabar Khabar is offline
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mine weep hole started to leak around 110k. park your car down heel it will increase leak from weep hole. Do u know where weep hole located?

Last edited by Khabar; 10-21-2012 at 10:45 AM.
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  #12  
Old 10-21-2012, 10:46 AM
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BimmerBrad7 BimmerBrad7 is offline
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damn 105-110k...anybody out there with more miles and the weep hole hasnt leaked yet?
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2005 BMW 745 LI Sapphire Black

22's, AC Schnitzer Kit, H&R Lowering Springs, Tinted tails and Signals, AC Schnitzer
Carbon Door Pillars, Cross Drilled and Slotted Rotors, Tuner Mod, Tinted Windshield,
30% Tint all the way around, and some other stuff I forgot.
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  #13  
Old 10-21-2012, 10:57 AM
Khabar Khabar is offline
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here was a guy who had 170k no problem.
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  #14  
Old 10-21-2012, 11:02 AM
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sirstopher sirstopher is offline
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Quote:
Originally Posted by BimmerBrad7 View Post
damn 105-110k...anybody out there with more miles and the weep hole hasnt leaked yet?
Mine went at 111,000 miles
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  #15  
Old 10-21-2012, 11:17 AM
Khabar Khabar is offline
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I fixed weep hole problem myself. there is good write up on 6 forum. I followed his instructions it took me 2 day to complete the work never work on cars before. It is time to learn how fix your car otherwise it will make u to commit suicide not only cry
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  #16  
Old 10-21-2012, 02:51 PM
johndade johndade is offline
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Im at 124 with no leak yet at least no leak saying low coolant.
The minute i say this ill get the leak probably haha.
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  #17  
Old 10-22-2012, 06:29 AM
new760Liowner new760Liowner is offline
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Check your auxiliary heater valve/pump. Specifically, the thermoplastic housing gets brittle over time with many heating/cooling cycles coupled with 29 psi (expansion tank pressure cap rating) and the housing will spring a leak. The fact that you are not getting heat to me indicates the solenoids on the heater valve are not working. If the engine runs, the coolant will get hot and you should get heat through your vents unless the solenoids aren't working, the thermoplastic is cracked or you have a leak running to your heater core.
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  #18  
Old 10-23-2012, 12:12 PM
B Numetal B Numetal is offline
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If the leak is on the passenger side, it is likely the oil switch and not be the head gasket. Had this is with mine and had the head gasket changed and leak remained. A BMW mechanic told me, the head gasket rarely ever leaks.
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  #19  
Old 11-20-2012, 09:58 AM
k-love k-love is offline
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Hello All,

So I finally broke down and took the car to the dealership (Nalley BMW). Here is the verdict in regards to all the leaks and heat not working, etc...they swear up and down its not the weephole, but whatever:

Power supply module 420.60 - the car cut off the other day and wouldnt start back up, which finally forced me to take to shop
battery 530.05 - i knew the battery was going bad anyways
megatronics unit/trans pan 1201.12 - they say along with oil, tranny fluid is leaking and the transmission failsafe came up on idrive the other day
timing case cover - 2479.25 - they say this is one cause of the oil leaking
alternator housing reseal - 1503.18 - oil leaking here as well
expansion tank - 305.53 - they swear up and down no weephole issue (why dont i believe them?)
valley pan - 1212.99 - they say oil and coolant is leaking through here as well

total = 7652.72

good news i guess is they say there is no head gasket issues.

ARRRRRRGH!!!!!

Last edited by k-love; 11-20-2012 at 10:02 AM.
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  #20  
Old 11-20-2012, 11:13 AM
cmpcpro cmpcpro is offline
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All these issues on an 05? I really think these cars are not good guys.. I am starting to get very afraid lol.. how could BMW make something with SO MANY problems??
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  #21  
Old 11-20-2012, 11:50 AM
k-love k-love is offline
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Well I would like to think a lot of it is just normal wear and tear..the car is 8 years old. Its got about 100k miles on it, so thats typically when stuff starts breaking on cars usually. Parts and labor are just killers though.
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  #22  
Old 11-20-2012, 12:21 PM
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D4T_POM D4T_POM is offline
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Your best to do most of it yourself i.e the valley pan, o-rings, return pipe, while your at it you might as well change the bloody coolant pipe which is under the valley pan, my stooooopid weep hole leak happened just about 2 weeks ago and my car is at 129,000 miles.
Took me about 8-9 hours to do myself (and I aint no mechanic lol but good with tools) plus you get to know your engine more.

As khabar said follow the link which he posted on my thread (6er forum) that pdf will help you alot (trust me).

Plus to change the valve cover gasket should be fairly simple to do as well, so save yourself as much money on labour as you can by doing it yourself with the help of a friend who is good with motors.
If you do it yourself, take your time and dont rush on taking anything off as you have to be gentle with this b! atch.

If you get stuck then you have fellow forum members here to help you

With regards to the mechatronics, get another garage to check (not a BMW stealership but an independant) as I dont personally trust what BMW stealers say (especially when your out of warranty and they know they can milk your money out of you, plus 99.99% of the time they are talking out of their a$$)
Changing the gearbox sump and oil is also a piece of cake (I will be doing mine in a week or so).

Good luck and keep us updated

There are DIY's for most of the stuff like weep hole, valve cover gasket, alternator gasket etc around this forum, dont get put off by the job, read and feed your brain with the knowledge and you will see anything is possible

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Last edited by D4T_POM; 11-20-2012 at 12:26 PM.
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  #23  
Old 11-20-2012, 12:27 PM
cmpcpro cmpcpro is offline
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Yeah, but I have seen many other cars with more miles with much less issues.. everyone complains about the S classes having issues but we didn't have anything compared to this.. sure we had air suspension issues and some trans issues, but nobody had gasket leaks, or oil and coolant on the ground.. and those people say they would never own one without a warranty.. and when I told them I wanted an E65 they laughed and said they were much worse.. I'm really loving my car MUCH better than the S but I am afraid they may have been right, and I really wish it wasn't true.. I am hoping if we could just spend a few grand and have the motor gone through gasket wise that would stop most of it.. but who knows..
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  #24  
Old 11-20-2012, 01:40 PM
k-love k-love is offline
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so am i right in assuming that the total for the parts is about $1500 or so, and the rest of the price is labor?
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  #25  
Old 11-20-2012, 01:50 PM
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D4T_POM D4T_POM is offline
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Quote:
Originally Posted by k-love View Post
so am i right in assuming that the total for the parts is about $1500 or so, and the rest of the price is labor?
I think it might be near the $2000 mark give or take

But hey I deal in 's lol

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