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7 Series - E65 / E66 (2002 - 2008)
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  #151  
Old 08-30-2014, 05:34 PM
fratan fratan is offline
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If you are trying to get the car inspected because of the p04910492 code SAS low air then you need to do the sea foam in the SAS ports fix. Changing the gl63 to gl 61 doesn't fix this issue. You would have to flash the dme which is for experts only. I wouldn't try it and I'm experieced


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  #152  
Old 08-30-2014, 07:23 PM
mlmotorsport mlmotorsport is offline
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After doing some gaskets and seals I got a secondary air code. The car was fine up to that point so I'm assuming I either just missed or split an associated hose and don't really want to go back through to find it. We don't have inspections here so I'm not worried about passing but I would like to eliminate the cel. Also it's been 5 years since this car has had any updates and I think it could benefit from one in a couple areas.
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  #153  
Old 08-31-2014, 04:23 AM
fratan fratan is offline
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If it was me I would try and find the leak. I wouldn't update if the car is running smooth. I would change the tranny fluid and reset the adaptations in inpa though. The SAS doesn't effect the performance so why update?


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  #154  
Old 09-07-2014, 10:36 AM
schpenxel schpenxel is offline
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Quote:
Originally Posted by mlmotorsport View Post
Sorry to drag back an old thread but I am looking for somebody who can hook up remotely to do some updates on the 645. I have the DIS software and the cable so I'm able to diagnose and erase codes etc but don't have the know-how to go much further. I know this type of thing can be done, I'm just looking for someone who can do it. If you know of anyone let me know. Much appreciate any help!
DIS isn't going to let you change something like that. Need to use NCS Expert/INPA

Quote:
Originally Posted by mlmotorsport View Post
After doing some gaskets and seals I got a secondary air code. The car was fine up to that point so I'm assuming I either just missed or split an associated hose and don't really want to go back through to find it. We don't have inspections here so I'm not worried about passing but I would like to eliminate the cel. Also it's been 5 years since this car has had any updates and I think it could benefit from one in a couple areas.
Which gaskets/seals did you change? There is a hose that runs from the air pump that splits into two parts and runs under the intake, back to the valves at the back of the engine. That is the most likely thing to crack in my opinion. If you have INPA you can force the air pump to come on while the engine is off. That should make it easier to find the leak.. but that hose would be my guess

Intake has to come off to replace it
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  #155  
Old 09-07-2014, 11:01 AM
fratan fratan is offline
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Are you referring to the p0491 0492 code? I use inpa to clear my codes or you can get a cheap code reader for 20 bucks on amazon.


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  #156  
Old 09-07-2014, 01:01 PM
schpenxel schpenxel is offline
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Quote:
Originally Posted by fratan View Post
Are you referring to the p0491 0492 code? I use inpa to clear my codes or you can get a cheap code reader for 20 bucks on amazon.


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Resetting the code isn't going to fix the problem
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  #157  
Old 09-07-2014, 02:42 PM
flash_n flash_n is offline
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Quote:
Originally Posted by schpenxel View Post
Resetting the code isn't going to fix the problem
I'm guessing the question was if you could set the DME such that it does not show the error, although it remains. Essentially the P0491 is not that bad, if you don't have to pass an OBD test.

On my car the emissions are tested via a probe (Germany) - I just have to make sure the MIL is not on.
So getting the engine hot and resetting the code should do - or changing the DME, so it does not react to P0491.

On what I gather for the ME 9.2 DME, there is a firmware that allows you to code the MIL to off. It is not possible to mask single errors as with firmware changes on previous DMEs (e.g. E39).

My thought was to push out an engine pull as far as possible. One of these days the stem seals, rod bearings, etc will drive me there and then I can also drill out the SAS ports through the valve opening.
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ASK, Logic 7, blower, battery, guibo joint, active stabilizer bar bushings, diff oil, tranny sw update, vacuum pump gasket, window lift, a/c compressor, washer fluid reservoir, belt tensioner and deflector, crankcase vacuum hoses, crankcase vents, solenoid gaskets, headlight overhaul, ISM, hood lifts, driver mirror, sway bar end links, rear fog lamps, headlight washer, headlight vertical aim, VCGs
next up: P0492
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  #158  
Old 09-07-2014, 04:59 PM
fratan fratan is offline
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Has the code posed a problem yet like getting an inspection sticker? If not, I would just clear it and monitor it. It sounds like carbon build up on bank 2 drivers side. You can soak the Tube going into the head for a few days and them use a wire brush to clean the heads and then blow air down there. It may take a few attempts.


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  #159  
Old 09-08-2014, 04:37 AM
fratan fratan is offline
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The fuel injection cleaner will not get rid of the p0491 code because the cleaner doesn't touch the heads. If the code is caused by carbon build up on the heads then you'll have to soak the drivers side SAS port for a few days to a week with Seafoam and then use a wire brush to get down to the heads and then use a compressor to blow the cleaner down to the exhaust manifold as specified in this thread.


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  #160  
Old 09-11-2014, 02:38 PM
fratan fratan is offline
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Hey, that is a fluke because I changed the string from gl63 to gl 61 on my wife's 745i. I ended up losing the weather channel but it didn't fix the p0491 or p0492. I went to another forum and they told me you would have to flash the dme with winkfp. I decided to do the seaport soak and clean instead.


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  #161  
Old 09-11-2014, 02:48 PM
fratan fratan is offline
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Just so everybody knows the p0491 and p0492 is usually a broken hose,a broken SAS pump or carbon build up on the heads caused by bad valve stem seals. You should use a fuel injection cleaner like Techton 2 times a year right before an oil change 300 miles before but this has nothing to do with carbon build up on the heads. In order to fix this go to you tube and watch the video by German enginering or something like that.


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