|
|
|
10-15-2015, 09:30 AM | #1 |
First Lieutenant
119
Rep 377
Posts |
DISA Upgrade/Repair
Hey guys. I'm sure everyone knows about DISA valves failing in the older engines but has anyone run into DISA problems on the n52 engine yet? Apparently the DISA motors for the N52 can show problems as well. Has anyone has done either of these or plans to do a repair/upgrade in the future? the three stage intake manifold is on my mod list and I'm wondering if it's wiser to just do the upgrade/repair before installing it. Thoughts?
http://www.bimmerfest.com/forums/sho...d.php?t=792912 http://vanos-bmw.com/repair-kit-for-...-n52-n52n-n52k |
10-15-2015, 07:17 PM | #2 |
Second Lieutenant
54
Rep 246
Posts |
I bought all new parts when I did the Stage 3...if you buy a used manifold, get new valves.
I've read about the problems, but I believe there's many, many more cars that never had DISA problems...assuming I keep the car long enough, I'll probably replace the valves after 20k miles or 2-3 years...they're not that expensive.
__________________
'13 128i 6sp, '19 Cherokee Ltd 3.2, '17 Ducati SuperSport S Gone But Not Forgotten: 74 Z28, 77 Datsun 280Z (1st 5sp in US), 92 Nissan 300ZTT, 94 MB SL600 V12, 01 M Roadster, 66 Yamaha TwinJet 100, 70 Suzuki X6 Hustler Race: GP/FP Spitfire SCCA, Merlyn FF SCCA, Mazda RX7 IMSA GTU, Yamaha FZR 400 AMA.
|
Appreciate
0
|
05-17-2016, 11:08 AM | #4 |
New Member
5
Rep 11
Posts |
I have a 2011 128i with over 116K, and I'm consistently seeing a 002AAC code now. I'm going to start by replacing the upper DISA, since I don't have to remove the intake manifold for that, then replace the lower if that doesn't do the trick. It's too bad that the DISA valves can't be rebuilt for the N52K.
|
Appreciate
0
|
05-17-2016, 11:07 PM | #5 |
New Member
5
Rep 11
Posts |
Wow, www.i6automotive.co.uk does manufacture a DISA repair kit. rhydtuned makes the rebuild look easy in this video:
|
Appreciate
0
|
05-23-2016, 05:51 PM | #6 |
Resident Tamed Racing Driver
298
Rep 4,697
Posts |
Mine failed around 70k miles combined on manifold plus my car. Was the last thing I repaired before I sold it.
__________________
2005 E46 M3 Interlagos/Cinnamon with Sunroof Delete
|
Appreciate
0
|
05-23-2016, 07:02 PM | #7 |
Слава Украине!
2317
Rep 2,440
Posts |
I'm confused. You sold the 1er?
__________________
|
Appreciate
0
|
05-24-2016, 03:15 PM | #9 |
Brigadier General
827
Rep 3,856
Posts |
|
Appreciate
0
|
05-24-2016, 07:27 PM | #10 |
First Lieutenant
52
Rep 374
Posts |
Nice on getting the E46 M3. Sad that you sold your 128i though. Your DIY threads were always very informative.
__________________
New Car: 2019 Porsche 718 Cayman GTS | Stock for now Old Car: 2013 BMW 128i | 6MT | BMW Performance Grills | CDV Delete | SSK | Performance Exhaust | M3 RSFB | TCKR DA |
Appreciate
0
|
06-03-2016, 03:58 PM | #11 | |
Resident Tamed Racing Driver
298
Rep 4,697
Posts |
Quote:
Did the VANOS rebuild and lockdown on the M3 last month. It's actually a pretty easy/fun car to wrench on if you get a chance.
__________________
2005 E46 M3 Interlagos/Cinnamon with Sunroof Delete
|
|
Appreciate
1
|
06-07-2016, 09:11 AM | #12 |
New Member
5
Rep 11
Posts |
Hey Guys,
I replaced the upper DISA and the 002AA8 fault code is gone. The car feels like it has more low RPM power, and runs slightly smoother. However, I'm still regularly seeing the 002AAC (variable intake manifold, self diagnosis) fault message. Should I pull the intake manifold and replace the lower DISA, or should I ignore this fault code? Thanks! Grat |
Appreciate
0
|
06-11-2016, 06:36 AM | #13 |
New Member
5
Rep 11
Posts |
Hey Guys,
I'll try this one again. Has anyone out there replaced their lower DISA? Was that the only way to make all faults go away? I'll rip out that intake manifold if I must, but I was hoping to get some guidance from you all. Summary: DISA upper replaced after seeing 002AAC and 002AA8 fault codes. Now just 002AAC remains consistently. Thanks! Grat |
Appreciate
0
|
06-11-2016, 08:44 AM | #14 | |
!
693
Rep 3,266
Posts
Drives: 2010 128i
Join Date: Feb 2010
Location: Anacortes, WA
|
Quote:
That's interesting that you got a couple of fault codes. I was wondering how easy the issue would be to diagnose if it occurred. Did you get a CEL or SES light, or did you just notice a downgrade in performance, and then check for codes? Ho noticeable was the degradation in performance? FWIW, if I were you, I would just go ahead and change the second DISA. I mean, you changed one and it cleared one fault, and one remains. And it seems reasonable to change both simultaneously (although it seems weird that they would fail simultaneously, it also seems like if it's a wear issue that they would have similar service lives). EDIT: Doing a quick Google of that fault code, I don't see what else the issue could be. I might run the car by an indy to see what they think if you really want to know for sure before ripping the intake manifold out, if that's your hesitation. Just out of curiosity, is your car an N51 that cam stock with the DISA motors, or an N52 where they were added afterwards? Mine is an N52, and I swapped in the 3-stage manifold - I'm wondering if my car would even "know" these codes in case of DISA failure? I know they work without coding, and the fault code most come from a problem downstream (AFR sensor or something), so it probably would.
__________________
____________________________ |
|
Appreciate
0
|
06-11-2016, 12:00 PM | #15 |
New Member
5
Rep 11
Posts |
Thanks for the reply.
Mine is an N52K that came stock with two DISA's in the manifold. There were no CEL or SES lights displayed. I purchased this car used, and therefore had no idea what the acceleration should feel like had the car been new. I only discovered the codes, because I was trying to sort out a right cornering light issue (different thread), which does display as a dash warning on start-up. I was also performing an whole car maintenance reset due to not quite knowing how the car had been maintained by the previous owner, and wanted to see what other sort of faults were occurring. The degradation in performance was a subtle, low RPM sort of thing. When accelerating hard, I would notice a sort of drop in power between 3500 and 4000 RPM, and then get a surge of power after 4000 RPM. The engine definitely puts out more power at low RPM's now. You can definitely feel the increase in power in the seat of the pants, and the drop in power between 3500 and 4000 is not longer as harsh as it used to be. I appreciate your recommendation for posting over on the e90 forum, and I may just replace the lower DISA for the heck of it. Cheers, Grat |
Appreciate
0
|
09-26-2016, 06:54 AM | #16 |
New Member
5
Rep 11
Posts |
Hey Guys,
I wanted to close this topic by letting you all know that replacing the lower DISA finally eliminated the last of my variable intake manifold codes. I found a couple of decent videos are how to remove the intake manifold, and was able to do the job myself with no drama. Thanks, Grat |
Appreciate
2
Bluewater328iT86.50 desertman1232213.50 |
03-23-2019, 12:48 PM | #17 |
New Member
0
Rep 11
Posts |
Gratuitous,
Did you notice another improvement in performance when you replaced the lower DISA valve? Also, can you provide a link to the videos you mention. Thanks. |
Appreciate
0
|
03-23-2019, 03:21 PM | #18 | |
E82 Mudflap Ambassador
2214
Rep 2,219
Posts
Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL
|
Quote:
Based on how my car changed after replacing the small one, and how my friend's car changed changing both, I think the big DISA affects the 3-5k RPM range and the small DISA is lower end. When I replaced my small DISA my partial throttle and low speed driving was a fair bit smoother, but I didn't feel I gained much if any power.
__________________
My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me!
Parents' 2014 528i - Mineral White/Ivory White - fully loaded Instagram @Andreys_128i and @Honda.Bito |
|
Appreciate
0
|
04-13-2019, 01:56 AM | #19 |
Lieutenant Colonel
480
Rep 1,600
Posts |
If you have access to ISTA, i highly recommend using that to reset the DME adaptations after changing the DISA flap/s. I got throttle adaptation faults after doing it in INPA.
|
Appreciate
0
|
04-13-2019, 12:01 PM | #20 |
E82 Mudflap Ambassador
2214
Rep 2,219
Posts
Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL
|
Yeah I'd imagine ISTA covers the throttle adaptation by itself too. Usually I just reset with INPA, then do the 'hold the throttle for 10 seconds' to reset it followed by clearing the codes.
__________________
My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me!
Parents' 2014 528i - Mineral White/Ivory White - fully loaded Instagram @Andreys_128i and @Honda.Bito |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|