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7 Series - E38 (1995 - 2001)

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  #1  
Old 08-27-2012, 02:40 PM
texasd texasd is offline
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01 740i - Vanos code 34 please help

Alrighty guys, I am trying to keep my cool, but it is hard. My 2001 740i (4.4l) is really being difficult. Husband is a mechanic, but rarely works on BMWs. Car was running crummy and sounded like a diesel. All the codes pointed to Vanos and timing issues. We replaced all the timing chains and bought the specialty tools to do the job correctly. The car runs smooth, runs great and boy it likes to go fast. But the check engine light is back on. Checked it and it shows a code 34 bank 2 vanos issue. Other than the light the car runs GREAT! Husband insists that we need to make sure its right before driving it anymore. What can possibly be causing this problem since the car is running like a dream - no misfire, no hesitation, no rattle. 100% better than when we got it, just has this silly code. Please help...I want to drive my car without worrying about it Thanks, Dee
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  #2  
Old 08-27-2012, 04:27 PM
setconstr setconstr is offline
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re

I would reset the computer and see if the same code comes back at least 2 more times that is what I have learned. these cars can throw a lot of codes so resetting is the way to know for sure
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  #3  
Old 08-27-2012, 06:22 PM
texasd texasd is offline
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We have reset it a few times, will try again tonite, do you know what the code 34 means? We have not had any luck finding any info on this particular code. Thanks, D
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  #4  
Old 08-27-2012, 09:15 PM
setconstr setconstr is offline
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I cannot find any info on code 34 sorry
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  #5  
Old 08-28-2012, 09:28 AM
texasd texasd is offline
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The code is 34 - vanos inlet camshaft control bank 2. Hope this helps, we are pulling our hair out. We have cleared the codes with the computer/scanner is there another way to reset it that we arent' aware of? When we reset the code the light is off,we can drive the car still no light, but the next time you turn the key on it is back with this code and it does't change if you move the vanos solenoids to the opposite sides. Same code, same bank. Thanks, Dee
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  #6  
Old 08-28-2012, 10:34 PM
setconstr setconstr is offline
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I did find this: One code persisted - "Inlet Camshaft Control Bank One." Switched camshaft position sensor from bank one to two, code didn't move with it; still returned bank one. Changed VANOS solenoid bank one, no change. Car sent to dealer for VANOS diagnostics; VANOS tests fine (remember, car runs fine). Dealer is installing new camshaft position sensor, to be removed and no cost if code persists. Hope that helps
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  #7  
Old 10-04-2012, 08:58 PM
BimmerBro BimmerBro is offline
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Mein Auto: 2001 Bmw 740i
I am getting this same code when I have it pulled at Autozone. Bank one vanos, mechanic told me I can have the vanos repaired or replaced. Either would require the engine to be opened up extensively and I might as well do the timing chain guides while he's in there. Any truth to this?

By the way, I get a tapping noise when the car is at idle temp.
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  #8  
Old 03-14-2013, 11:29 AM
kimokk kimokk is offline
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Yes, it's most likely timing guides have failed. You can confirm by dropping oil pan and looking for broken plastic remnants in there.
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BMW '00 740il w/212,xxx miles, DIY timing chain guides complete! M60 Manifold, BDC Throttle Body, Performance gearing 3.46 LSD, Magnaflow Mufflers
BMW '97 ///M3/2/5 w/96,xxx miles
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  #9  
Old 03-19-2013, 05:25 AM
OB740IL OB740IL is offline
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HEY EVERYONE!
IM KIND OF NEW TO BIMMERFEST. I READ texasd'S POST AND I GOT THE SAME PROBLEM BUT IN MY CASE ITS WORST BECAUSE I JUST BOUGHT THE CAR A WEEK AGO FROM A GUY IN NEW JERSEY AND I LIVE IN BROOKLYN NY SO I GOTTA PASS THE INSPACTION ON IT AND I CANT UNTIL I FIX THE VANOS. AND TO BE HONEST DONT KNOW WHAT TO DO. BECAUSE AS MUCH AS I WOULD LOVE TO FIX IT MY SELF I HAVE NO ROOM NO GARAGE AND THE MECHANICS HERE ARE CRAZY AS SOON AS THEY HEAR VANOS THEY GO NUTS TELLING ME ITS ATLEAST A 2000 DOLLAR JOB.LOL
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  #10  
Old 03-19-2013, 06:10 AM
kimokk kimokk is offline
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Quote:
Originally Posted by OB740IL View Post
HEY EVERYONE!
IM KIND OF NEW TO BIMMERFEST. I READ texasd'S POST AND I GOT THE SAME PROBLEM BUT IN MY CASE ITS WORST BECAUSE I JUST BOUGHT THE CAR A WEEK AGO FROM A GUY IN NEW JERSEY AND I LIVE IN BROOKLYN NY SO I GOTTA PASS THE INSPACTION ON IT AND I CANT UNTIL I FIX THE VANOS. AND TO BE HONEST DONT KNOW WHAT TO DO. BECAUSE AS MUCH AS I WOULD LOVE TO FIX IT MY SELF I HAVE NO ROOM NO GARAGE AND THE MECHANICS HERE ARE CRAZY AS SOON AS THEY HEAR VANOS THEY GO NUTS TELLING ME ITS ATLEAST A 2000 DOLLAR JOB.LOL

Hard to say. If you're able to drop the oil pan, you can verify whether or not you have broken plastic bits in the pan. If so, you need to replace the timing chain guide rails which is a $2500-$5000 dollar job depending on where you take it. Otherwise if you can manage to do it yourself you can complete it for less than $1000.

Did you get a PPI done on the car before you bought it?
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BMW '00 740il w/212,xxx miles, DIY timing chain guides complete! M60 Manifold, BDC Throttle Body, Performance gearing 3.46 LSD, Magnaflow Mufflers
BMW '97 ///M3/2/5 w/96,xxx miles
BMW '91 ///M5 w/156,XXX Smiles
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  #11  
Old 03-19-2013, 06:21 AM
OB740IL OB740IL is offline
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Quote:
Originally Posted by kimokk View Post
hard to say. If you're able to drop the oil pan, you can verify whether or not you have broken plastic bits in the pan. If so, you need to replace the timing chain guide rails which is a $2500-$5000 dollar job depending on where you take it. Otherwise if you can manage to do it yourself you can complete it for less than $1000.

Did you get a ppi done on the car before you bought it?
well i didn't take it to a mechanic but i drove it for about an hour and it seemed fine no noises or rattles i check the car fax and it was clean then it said that the car was at the dealer few days before i bought it.so i figured if the dealer serviced it it must be fine but when i got home few days later my service engine soon light came on i took the car to my mechanic and he ran the tests and it came up with bad thermostat, camshaft sensor and vanos so i fixed the thermostat and the sensor but the vanos he told me its gonna be around 2000 grand just the labor plus parts. So i called the dealer and they said that there was no problem with the vanos system all they did was oil change.
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  #12  
Old 03-19-2013, 06:53 AM
kimokk kimokk is offline
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How many miles? What OBDII code did you get? The only way to tell for sure is to drop the oil pan and see if you have any broken plastic bits in the pan. Good luck.
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BMW '00 740il w/212,xxx miles, DIY timing chain guides complete! M60 Manifold, BDC Throttle Body, Performance gearing 3.46 LSD, Magnaflow Mufflers
BMW '97 ///M3/2/5 w/96,xxx miles
BMW '91 ///M5 w/156,XXX Smiles
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  #13  
Old 03-19-2013, 07:48 AM
OB740IL OB740IL is offline
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Quote:
Originally Posted by kimokk View Post
how many miles? What obdii code did you get? The only way to tell for sure is to drop the oil pan and see if you have any broken plastic bits in the pan. Good luck.
the miles are 130000 and the obd code i got from the mechanic was p0020but he said it also known as 30
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  #14  
Old 03-19-2013, 10:14 AM
kimokk kimokk is offline
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It could be the vanos solenoid or the guides. Take a look at this link.
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BMW '00 740il w/212,xxx miles, DIY timing chain guides complete! M60 Manifold, BDC Throttle Body, Performance gearing 3.46 LSD, Magnaflow Mufflers
BMW '97 ///M3/2/5 w/96,xxx miles
BMW '91 ///M5 w/156,XXX Smiles
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  #15  
Old 03-20-2013, 07:12 AM
OB740IL OB740IL is offline
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Location: brooklyn, ny
 
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Quote:
Originally Posted by kimokk View Post
It could be the vanos solenoid or the guides. Take a look at this link.
ok thanks a lot for youre help i actually went to a shop yesterday and the guy said if my service engine light is not on my car could pass the emission test and it did bu he said sooner or later i would need to fix the vanos and he said that the way it sounds it could be only the solenoid . so im taking it back to him next week for a check up
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  #16  
Old 05-26-2013, 09:40 PM
Otis DeBoard Otis DeBoard is offline
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Mein Auto: 2001 740IL
First the light is caused by the setup of the timing with the special tools. You can take the valve cover off on bank two and adjust the pickup clockwise by a pen mark and that should take care of the problem. Did they replace the guides when the changed the chains?
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