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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 08-10-2009, 05:39 PM
2004BMW325Ci 2004BMW325Ci is offline
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Disa Valve on my E46

The SES light came on yesterday morning as I was coming home from church. I took it into the dealership this morning and they traced the code to the Disa valve. They said it was running lean. The engine was idling pretty rough, so I'm hoping this valve will solve the problem. For $265 I sure hope it does.
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  #2  
Old 08-10-2009, 06:17 PM
dakarm dakarm is offline
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DISA can cause a lean condition? I didn't think that was possible. BTW DISA valve replacement takes about 10mins. it's 1 connector and 2 bolts.

also DISA failure is obvious from just listening to the engine. it makes a aweful racket. with the hood up standing on the driver side you should be able to hear it rattling if it's bad.

#7 in the diagram:


cost is about $170+tax+shipping
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  #3  
Old 08-10-2009, 08:22 PM
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It`s true....the DISA replacement is a 10-minute DIY, one of the easiest ones there is.....you can save about 100 bucks doing it yourself....
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  #4  
Old 08-11-2009, 04:39 AM
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MicahO MicahO is offline
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If you do hear a sound like a can of marbles under your hood, turn the motor off and unplug the wire harness from the DISA valve, as dakarM said, #7 in the picture. Start the motor. If the noise goes away then your DISA valve definitively has a problem.

Either way, the DISA valve staying open (or shut, I forget how it flaps) is going to cause neither a rough idle nor a lean condition. Check for that noise, and then tell the dealer to try, try again.
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  #5  
Old 08-12-2009, 01:03 PM
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Solidjake Solidjake is offline
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DISA costs around $195 after taxes in NY state. $175 or so with CCA discount before tax. It literally takes 10 min to change. And yes, it does cause a lean code. Changing my DISA removed my P0171 and P0174 lean codes.

Here is my DIY vid.

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  #6  
Old 08-12-2009, 01:12 PM
ventsyv ventsyv is offline
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I'm driving with mine disconnected and no codes. I need to get around to replacing it.
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  #7  
Old 09-13-2009, 09:55 AM
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09krolt 09krolt is offline
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Does the disa valve replacement cure or make the 4k power dip less noticeable
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  #8  
Old 09-13-2009, 10:06 AM
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Originally Posted by 09krolt View Post
Does the disa valve replacement cure or make the 4k power dip less noticeable
I don' think so. The 4k dip is a software issue on ZHP's.
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  #9  
Old 09-13-2009, 10:11 AM
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KrisL KrisL is offline
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Originally Posted by Solidjake View Post
I don' think so. The 4k dip is a software issue on ZHP's.
Yep.. the TSB fixed mine..
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  #10  
Old 09-13-2009, 10:35 AM
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09krolt 09krolt is offline
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My dealership said they cannot fix my power dip and they cannot send the dme out for reprogramming wtf
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  #11  
Old 09-13-2009, 10:41 AM
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Quote:
Originally Posted by 09krolt View Post
My dealership said they cannot fix my power dip and they cannot send the dme out for reprogramming wtf
Well if you're not under warranty it's not going to be cheap... TSBs are only free under warranty.
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  #12  
Old 09-13-2009, 02:38 PM
marlin1881 marlin1881 is offline
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I just replaced my DISA valve, as the engine was idling rough and I would get P0171 and/or P0174 errors. I kept resetting the error codes as I didn't have time to really investigate the rough idle, and that SES light is really bright and annoying!!!

Easy DIY. Seriously. Give it a try. My dealer charged me $180 for the DISA with discount. Interesting in that my DISA was broken inside, as the post that the "flap" pivots on next to the DISA body, had broken in two pieces. The DISA flap was free-floating inside. I also had a bit of an air leak around the main body gasket, and there was grease/dirt just inside the intake manifold.

Swapped it out and drove it around for a while. Now that the DME has caught up with the changes, the car runs VERY smooth.
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  #13  
Old 09-13-2009, 02:55 PM
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^ Excellent, glad to hear all is well.

Did you use my vid by any chance?
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  #14  
Old 09-13-2009, 08:06 PM
marlin1881 marlin1881 is offline
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Quote:
Originally Posted by Solidjake View Post
^ Excellent, glad to hear all is well.

Did you use my vid by any chance?
Well, of course!!! Actually, I did view your video, and it made the quick project rather straightforward to do. Thanks again.

Marlin1881
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  #15  
Old 10-22-2009, 04:04 PM
ftgambit ftgambit is offline
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2001 X5 3.0i DISA VALVE HELP!!!!

Hey all,

Need a little help I would like to replace the DISA Valve and I can't seem to find it on any of the usual BMW part websites, any suggestions, also does anyone have a DIY for replacing this part, I am pretty good have fixed quite a few things on my x5 but this seems a little more complex.
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  #16  
Old 10-22-2009, 04:19 PM
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AlboBMW AlboBMW is offline
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Quote:
Originally Posted by ftgambit View Post
Hey all,

Need a little help I would like to replace the DISA Valve and I can't seem to find it on any of the usual BMW part websites, any suggestions, also does anyone have a DIY for replacing this part, I am pretty good have fixed quite a few things on my x5 but this seems a little more complex.
have you checked autohausaz.com?
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  #17  
Old 10-22-2009, 04:59 PM
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Quote:
Originally Posted by ftgambit View Post
Hey all,

Need a little help I would like to replace the DISA Valve and I can't seem to find it on any of the usual BMW part websites, any suggestions, also does anyone have a DIY for replacing this part, I am pretty good have fixed quite a few things on my x5 but this seems a little more complex.
............... did you happen to see a video a few posts up?



www.getbmwparts.com
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  #18  
Old 11-28-2009, 12:20 PM
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Part # : 11 61 7 544 805 $ 204.95 at Bavauto.com.

Last edited by jburns; 11-28-2009 at 12:24 PM.
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  #19  
Old 11-28-2009, 12:25 PM
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jburns jburns is offline
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Quote:
Originally Posted by ftgambit View Post
Hey all,

Need a little help I would like to replace the DISA Valve and I can't seem to find it on any of the usual BMW part websites, any suggestions, also does anyone have a DIY for replacing this part, I am pretty good have fixed quite a few things on my x5 but this seems a little more complex.
Part # : 11 61 7 544 805 $ 204.95 at Bavauto.com
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  #20  
Old 01-06-2010, 05:51 PM
bimmerboy2051 bimmerboy2051 is offline
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Quote:
Originally Posted by ventsyv View Post
I'm driving with mine disconnected and no codes. I need to get around to replacing it.
Is it really ok to drive around with the DISA disconnected?
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  #21  
Old 01-07-2010, 06:47 AM
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MicahO MicahO is offline
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Quote:
Originally Posted by bimmerboy2051 View Post
Is it really ok to drive around with the DISA disconnected?
At least for a short time, yes. It just means you are running the engine with the resonance flap open, as it would be running normally above 4100RPM. You may feel some lost low-end torque (if you are sensitive and running at WOT). There may also be some codes thrown, I'd be surprised if there are not. But people have done it for short periods and you shouldn't see any 'damage.'

Order one from Tischer, at least at one point in the recent past they had the best pricing. Until it arrives, you can run with the harness unplugged. If it failed the way mine did, with a loose/broken shaft, at least you won't have that can-of-marbles noise under the hood.
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  #22  
Old 01-08-2010, 07:08 AM
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Brian McKinney Brian McKinney is offline
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we replaced a disa valve on a ZHP with the 4K dip, problem solved car runs hard so much better
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  #23  
Old 01-08-2010, 09:21 AM
ventsyv ventsyv is offline
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I replaced mine too a few weeks ago. I started getting codes and as part of some other repairs I replaced the DISA as well. No rattle any more but no noticeable increase in performance either.
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  #24  
Old 11-23-2013, 09:16 AM
sun3301 sun3301 is offline
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I was looking up what the VISA valve is and found this thread.

I had the SES light on for about 3 weeks on my 98,000 mile 330ci. The light went away 2 weeks ago, but came back a few days later. Then last week after work, the car was a bit rough and as I applied throttle, the engine ran like it had a misfire, a bad one. So I nursed it along and about 1 mile later the engine smoothed out to normal. So I brought it in for service as it was 6 thousand miles passed the Inspection II, but I wasn't worried as I had done a lot of the service already.

Not knowing what a DISA valve was, I was surprised to learn that was bad, and the valve cover had a crack and was sucking in air and the PCV valve was bad! Cascade of failures. I never heard of valve covers cracking before, so I was surprised to see others had them crack too. A year ago, the tech replaced the valve cover gasket as it was leaking, so I wondered, though I doubt he over tightened it and cracked it.

If it was just a DISA valve, I'd have done it, but I hate the idea of attempting to replace the valve cover. If it was on my 1967 Mustang, no problem. Did the spark plugs too as those were original.

The car seems fine now.
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  #25  
Old 11-23-2013, 09:30 AM
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Quote:
Originally Posted by sun3301 View Post
I was looking up what the VISA valve is and found this thread.

I had the SES light on for about 3 weeks on my 98,000 mile 330ci. The light went away 2 weeks ago, but came back a few days later. Then last week after work, the car was a bit rough and as I applied throttle, the engine ran like it had a misfire, a bad one. So I nursed it along and about 1 mile later the engine smoothed out to normal. So I brought it in for service as it was 6 thousand miles passed the Inspection II, but I wasn't worried as I had done a lot of the service already.

Not knowing what a DISA valve was, I was surprised to learn that was bad, and the valve cover had a crack and was sucking in air and the PCV valve was bad! Cascade of failures. I never heard of valve covers cracking before, so I was surprised to see others had them crack too. A year ago, the tech replaced the valve cover gasket as it was leaking, so I wondered, though I doubt he over tightened it and cracked it.

If it was just a DISA valve, I'd have done it, but I hate the idea of attempting to replace the valve cover. If it was on my 1967 Mustang, no problem. Did the spark plugs too as those were original.

The car seems fine now.
VCs do crack. It's plastic after all. Replacement really isn't that bad. Takes some time. Have you done the VANOS seals on it? With the VC off is the best time since it has to come off to get at the VANOS pistons. Can probably reuse the gasket if you do it in the next year or so.

Frequently the DISA can be rebuilt and re-gasketed - very easy. CCVs usually slowly clog or the hoses start to leak air and/or oil. So I don't think you got the triple whammy all at once.

As long as your cooling system has been refreshed and the drivetrain fluids flushed, you're largely up to date and just waiting for a window regulator to crap out.
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