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Author Topic: Fan working all time after ecu swap  (Read 10779 times)
yxx499
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« on: October 17, 2016, 04:41:31 AM »

Hi mates,

I have an issue with my friend car :  Audi A4 1.8T USA Version 170HP.
Last week replaced OEM ecu (8E0909518AK) with  BAM ECU 06A906018BJ.

Car working good, have now k04,S3 injectors ,s3 maf,etc.

I have 2 issues:

1.SAFE on dashboard. (I have copied login code from old eeprom to new eeprom, and SAFE disappeared)
2.Fans running all time.  - i have checked on some forums but don.t know what to do.
It`s very annoying this thing and don.t get a solution untill now.

Please if someone know or have an ideea with this problem, i will be grateful.
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vwaudiguy
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« Reply #1 on: October 17, 2016, 07:14:02 AM »

Hi mates,

I have an issue with my friend car :  Audi A4 1.8T USA Version 170HP.
Last week replaced OEM ecu (8E0909518AK) with  BAM ECU 06A906018BJ.

Car working good, have now k04,S3 injectors ,s3 maf,etc.

I have 2 issues:

1.SAFE on dashboard. (I have copied login code from old eeprom to new eeprom, and SAFE disappeared)
2.Fans running all time.  - i have checked on some forums but don.t know what to do.
It`s very annoying this thing and don.t get a solution untill now.

Please if someone know or have an ideea with this problem, i will be grateful.

You say you have 2 issues. Was the first (SAFE) resolved?

The second issue is most likely because of the ecu change. Does the fan issue go away with the original ecu installed?
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vdubnation
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« Reply #2 on: October 17, 2016, 07:41:23 AM »

The ecu isnt compatible with your car. The B6 platform requires ecu fan trigger from ECU the 06a Platform has a standalone module for fans that works on its own.
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yxx499
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« Reply #3 on: October 17, 2016, 10:15:02 AM »

No vwaudyguy, with stock ecu is working good.

The ecu isnt compatible with your car. The B6 platform requires ecu fan trigger from ECU the 06a Platform has a standalone module for fans that works on its own.

So what ECU is needed for this A4 B6?
« Last Edit: October 17, 2016, 10:22:03 AM by telnet402m » Logged
vwaudiguy
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« Reply #4 on: October 17, 2016, 11:43:03 AM »

No vwaudyguy, with stock ecu is working good.

So what ECU is needed for this A4 B6?

The original, or one compatible with your engine code.
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yxx499
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« Reply #5 on: October 17, 2016, 11:57:57 PM »

Original was damaged and don`t want to put 8E back because i don.t have damos for it.

What ecu is compatible with this car? thanks.
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Carsinc
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« Reply #6 on: October 18, 2016, 07:00:16 AM »

The stock ecu part number for that car is well defined on this site, there are many def
files for the 518ak up here even 2 whole threads about tuning that ecu and car...
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yxx499
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« Reply #7 on: October 18, 2016, 07:40:25 AM »

Ok i understand this,

but that is not a solution for solving fan issue.

Could we make something to respond exactly at question not turning arround ?

I think there is someone who have this issue and knows how to solve it via software.

The stock ecu part number for that car is well defined on this site, there are many def
files for the 518ak up here even 2 whole threads about tuning that ecu and car...

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nyet
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« Reply #8 on: October 18, 2016, 10:02:46 AM »

but that is not a solution for solving fan issue.

Could we make something to respond exactly at question not turning arround ?

Yes. Get the correct ECU

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Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
vwaudiguy
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« Reply #9 on: October 18, 2016, 12:40:04 PM »

Ok i understand this,

but that is not a solution for solving fan issue.

Could we make something to respond exactly at question not turning arround ?

I think there is someone who have this issue and knows how to solve it via software.


Pull the fuse for the fan. Make sure you keep it above 40 mph... Don't be surprised if people slowly stop posting in this thread.
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Carsinc
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« Reply #10 on: October 18, 2016, 08:33:07 PM »

Nah I'll post here but mostly because it will be fun, it was explained to you that
the ecu you have will no workie. You did not care and you came back and
said I dont care if its wrong, I dont care if there is a million reasons I should
do it another way. I want to do this, Fuck logic.
SO what i say is go figure out how to do it and prove us all wrong I'm rooting
for you.
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adam-
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« Reply #11 on: October 19, 2016, 04:16:17 AM »

The ecu isnt compatible with your car. The B6 platform requires ecu fan trigger from ECU the 06a Platform has a standalone module for fans that works on its own.

I think this answers it tbf.
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nyet
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« Reply #12 on: October 19, 2016, 10:44:51 AM »

I think there is someone who have this issue and knows how to solve it via software.

1) Find an unused I/O on the ecu
2) make a driver circuit, solder it in, patch it into the harness where the fans expect the trigger
3) patch in custom asssembly to sample tmot (or whatever you want the trigger to be) and feed it to more custom code controlling the driver.

Good luck.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
vdubnation
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« Reply #13 on: October 19, 2016, 07:28:52 PM »

1) Find an unused I/O on the ecu
2) make a driver circuit, solder it in, patch it into the harness where the fans expect the trigger
3) patch in custom asssembly to sample tmot (or whatever you want the trigger to be) and feed it to more custom code controlling the driver.

Good luck.


 Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin
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Carsinc
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« Reply #14 on: October 19, 2016, 08:43:26 PM »

Look at that, see they even told you what to do.
NOW get to work. I'd go buy a correct ecu.
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