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General E46 Forum
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Old 04-18-2017, 04:27 PM   #21
BaliDawg
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Quote:
Originally Posted by az_330 View Post
1) I have Dash Command which shows some live data and can log... Does INPA not have that capability? INPA definitely has more readout options than dash command but haven't found anything for logging.
2) Also trying to find an option for running a diagnostic check on the secondary air pump.
3) Should I be looking into swapping the DME with one more similar to my car?
4) If so should I get a auto or manual one? Or does it even matter?
1. INPA Itself doesn't log. But Testo does.
http://www.bimmerforums.com/forum/sh...ime-graph-view

2. Disconnect the large and small hoses at the SAP check valve. At cold start the large one should have strong air pressure and the small one should have vacuum. Then plug in the small hose and see if it opens the check valve or not.

3. You need the original DME and EWS so that any new keys you buy for your car actually work.

4. It doesn't matter.
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Old 04-18-2017, 10:51 PM   #22
az_330
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1) Thanks. I'll have to download that and get it working when I have some free time.

2) Just waiting for my car to cool down. Might just wait until the morning before work to try this.

3) Does it have to be the original DME and EWS? Or can I purchase a set from another car? Are there any other downsides to having mismatched DME/EWS? Just wanting new keys seems pretty minor.

I checked the part number on the DME and EWS

DME = 7528 050 - RealOEM shows 03-04 Basic control unit
EWS = 6135-6905 670 - Shows 99-06 EWS III unit

How do I know they are a matching set?

I contacted the original owner and he says he never swapped the DME... just reprogrammed it.


Edit: changed title to better suit my issue.

Last edited by az_330; 04-18-2017 at 11:03 PM.
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Old 04-19-2017, 01:14 AM   #23
BaliDawg
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Quote:
Originally Posted by az_330 View Post
I checked the part number on the DME and EWS
DME = 7528 050 - RealOEM shows 03-04 Basic control unit
EWS = 6135-6905 670 - Shows 99-06 EWS III unit
How do I know they are a matching set?

I contacted the original owner and he says he never swapped the DME... just reprogrammed it.
Only a matched DME/EWS set will work in a car.
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Old 04-19-2017, 10:14 AM   #24
armenh7
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Quote:
Originally Posted by az_330 View Post
I have Dash Command which shows some live data and can log... Does INPA not have that capability? INPA definitely has more readout options than dash command but haven't found anything for logging. Also trying to find an option for running a diagnostic check on the secondary air pump. Still learning

That really scares me about the DME. I'm not sure about the key.. I was only given 1. I can ask if he has the original DME but my guess is he doesn't have it. Should I be looking into swapping the DME with one more similar to my car? If so should I get a auto or manual one? Or does it even matter?
If you look on the physical dme, you can see a vin number. See if it matches with the one on your car.
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Old 04-19-2017, 08:35 PM   #25
az_330
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Checked the SAP/valve this morning and it seemed to work fine. Was getting vacuum to the smaller hose and the larger hose was pumping out exhaust for about a minute as it should.

Although, I was watching the inside of the valve through the larger hose port to see if it would do anything as BaliDawg mentioned but I couldn't see anything happening. What specifically should I be looking for as far as the valve is concerned? Or should I just assume it's good since I'm getting vacuum/exhaust through the hoses?

Quote:
Originally Posted by armenh7 View Post
If you look on the physical dme, you can see a vin number. See if it matches with the one on your car.
Just checked all over the DME and there is no VIN on it. I assume that means it was replaced from the factory?... or a brand new DME was installed?

Is there any issue with that? Besides possibly being unable to make new keys for my car which isn't a big deal IMO.

Last edited by az_330; 04-19-2017 at 08:50 PM.
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Old 04-19-2017, 08:37 PM   #26
armenh7
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Originally Posted by az_330 View Post
Just checked all over the DME and there is no VIN on it. I assume that means it was replaced from the factory?

Is there any issue with that? Besides possibly being unable to make new keys for my car which isn't a big deal IMO.
Then the sticker may have been peeled off. Look here: http://bit.ly/2pTnNmN
See the sticker at the top?

Last edited by armenh7; 04-19-2017 at 08:38 PM.
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Old 04-19-2017, 08:52 PM   #27
az_330
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Originally Posted by armenh7 View Post
Then the sticker may have been peeled off. Look here: http://bit.ly/2pTnNmN
See the sticker at the top?
Yeah I googled E46 DME images earlier to be sure I wasn't missing it somehow. It's definitely not there
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Old 04-19-2017, 08:52 PM   #28
BaliDawg
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Quote:
Originally Posted by az_330 View Post
Although, I was watching the inside of the valve through the larger hose port to see if it would do anything as BaliDawg mentioned but I couldn't see anything happening. What specifically should I be looking for as far as the valve is concerned? Or should I just assume it's good since I'm getting vacuum/exhaust through the hoses?
The small vacuum line is supposed to open the check valve. See if it does or if the valve is stuck.

Search for some youtube videos and DIYs on this topic to get more familiar with the parts and how they work together.
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Last edited by BaliDawg; 04-19-2017 at 08:53 PM.
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Old 04-19-2017, 09:56 PM   #29
az_330
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I did the 3 step diagnostic check found on youtube and everything checks out. The SAP valve only lets air pass through it if I apply vacuum to it.


Checked the codes with INPA just now and 3/4 original codes returned!!

245 Secondary air pump bank 1
246 Secondary air pump bank 2
250 Functional Check TEV

Any other ideas?

I will admit the vacuum did seem a little weak at the smaller hose so going to check to be sure that's in good shape later.

Does anyone know if there's a way to run a diagnostic check on the SAP system with INPA? The PO seems to think so but I can't find anything about it online.

...and I have no idea what the 250 functional check code is about.

Last edited by az_330; 04-19-2017 at 11:18 PM.
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Old 04-21-2017, 12:32 AM   #30
TobyB
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Follow the little vacuum line for the sap valve- it takes a tortuous path, and there are several transitions between soft and 'semi- rigid' lines.
On both our cars, the soft lines have gotten brittle and leaky- enough to set sap codes, intermittently. $15 of hose fixed both, plus the line to the fuel pressure
regulator, and a few others. It's not an EASY job, but most of the hassle is just access...

hth

t
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Old 04-22-2017, 11:01 AM   #31
az_330
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Thanks for the replies.. I'm going to work on the vac lines when I get a chance.

Any thoughts on the functional check TEV code??

Last edited by az_330; 04-22-2017 at 11:02 AM.
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