| Author |
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prop
Guest
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 Posted:
Sun Nov 13, 2005 7:45 pm Post subject:
92 525i computer problem? |
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i have a 92 525i with a rough idle .the computer was changed about 3 years
ago and now i~m not getting any signal to 2 cylinders.i thinks it`s the
computer again but i need to know about matching up the numbers so i can
try to find a used ecu.the number on the ecu i have is 261 200 402.i see
alot of ecu`s with the same first 6 numbers but the last three are
different.can anyone help or know where i can get one.thanks
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Juan Hunglow
Guest
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| Posted:
Sun Nov 13, 2005 7:45 pm Post subject:
Re: 92 525i computer problem? |
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"prop" <loosehead3@aol.com> wrote in message
news:6a6cdb439eff717a6f4810b80533a1a7@localhost.talkaboutautos.com...
| Quote: | i have a 92 525i with a rough idle .the computer was changed about 3 years
ago and now i~m not getting any signal to 2 cylinders.i thinks it`s the
computer again but i need to know about matching up the numbers so i can
try to find a used ecu.the number on the ecu i have is 261 200 402.i see
alot of ecu`s with the same first 6 numbers but the last three are
different.can anyone help or know where i can get one.thanks
|
you don't say which country you are posting from but
this guy I can fully recommend for repairs or info
http://www.the-ecu-doctor.co.uk/
dj |
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John Burns
Guest
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| Posted:
Sun Nov 13, 2005 11:02 pm Post subject:
Re: 92 525i computer problem? |
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| Quote: | i have a 92 525i with a rough idle .the computer was changed about 3 years
ago and now i~m not getting any signal to 2 cylinders.i thinks it`s the
computer again but i need to know about matching up the numbers so i can
try to find a used ecu.the number on the ecu i have is 261 200 402.i see
alot of ecu`s with the same first 6 numbers but the last three are
different.can anyone help or know where i can get one.thanks
|
Basically the number need to match. But in your case you may find it's
just the output transistors that have died, I've seen this before. You
can often rob them from a dead ECU and solder them into yours.
--
Who needs a life when you've got Unix? :-)
Email: john@unixnerd.demon.co.uk, John G.Burns B.Eng, Bonny Scotland
Web : http://www.unixnerd.demon.co.uk - The Ultimate BMW Homepage!
Need Sun or HP Unix kit? http://www.unixnerd.demon.co.uk/unix.html
www.Strathspey.co.uk - Quality Binoculars at a Sensible price
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Jeff Strickland
Guest
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| Posted:
Sun Nov 13, 2005 11:55 pm Post subject:
Re: 92 525i computer problem? |
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I would guess the ignition coils are toast first.
"prop" <loosehead3@aol.com> wrote in message
news:6a6cdb439eff717a6f4810b80533a1a7@localhost.talkaboutautos.com...
| Quote: | i have a 92 525i with a rough idle .the computer was changed about 3 years
ago and now i~m not getting any signal to 2 cylinders.i thinks it`s the
computer again but i need to know about matching up the numbers so i can
try to find a used ecu.the number on the ecu i have is 261 200 402.i see
alot of ecu`s with the same first 6 numbers but the last three are
different.can anyone help or know where i can get one.thanks
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Jeff Strickland
Guest
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| Posted:
Sun Nov 13, 2005 11:57 pm Post subject:
Re: 92 525i computer problem? |
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"John Burns" <john@unixnerd.demon.co.uk> wrote in message
news:4377718F.1A26@unixnerd.demon.co.uk...
| Quote: | i have a 92 525i with a rough idle .the computer was changed about 3
years
ago and now i~m not getting any signal to 2 cylinders.i thinks it`s the
computer again but i need to know about matching up the numbers so i can
try to find a used ecu.the number on the ecu i have is 261 200 402.i see
alot of ecu`s with the same first 6 numbers but the last three are
different.can anyone help or know where i can get one.thanks
Basically the number need to match. But in your case you may find it's
just the output transistors that have died, I've seen this before. You
can often rob them from a dead ECU and solder them into yours.
|
If you can rob them from another ECU, can't you simply go to an electonics
store and buy a few? This would give one solder-cycle instead of two ... |
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John Burns
Guest
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| Posted:
Mon Nov 14, 2005 1:28 am Post subject:
Re: 92 525i computer problem? |
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| Quote: | Basically the number need to match. But in your case you may find it's
just the output transistors that have died, I've seen this before. You
can often rob them from a dead ECU and solder them into yours.
If you can rob them from another ECU, can't you simply go to an electonics
store and buy a few? This would give one solder-cycle instead of two ...
|
Except for the fact they have a Bosch part number and not even Bosch
will tell you what they are or sell replacements :-(
--
Who needs a life when you've got Unix? :-)
Email: john@unixnerd.demon.co.uk, John G.Burns B.Eng, Bonny Scotland
Web : http://www.unixnerd.demon.co.uk - The Ultimate BMW Homepage!
Need Sun or HP Unix kit? http://www.unixnerd.demon.co.uk/unix.html
www.Strathspey.co.uk - Quality Binoculars at a Sensible price |
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Jeff Strickland
Guest
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| Posted:
Tue Nov 15, 2005 6:58 am Post subject:
Re: 92 525i computer problem? |
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"John Burns" <john@unixnerd.demon.co.uk> wrote in message
news:437793EC.78B1@unixnerd.demon.co.uk...
| Quote: | Basically the number need to match. But in your case you may find it's
just the output transistors that have died, I've seen this before. You
can often rob them from a dead ECU and solder them into yours.
If you can rob them from another ECU, can't you simply go to an
electonics
store and buy a few? This would give one solder-cycle instead of two ...
Except for the fact they have a Bosch part number and not even Bosch
will tell you what they are or sell replacements :-(
|
Well, it's a transistor. It's probably a power transistor, and it you know
if it's a PNP or NPN, finding a suitable replacement should be easy. |
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Dave Plowman (News)
Guest
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| Posted:
Tue Nov 15, 2005 1:40 pm Post subject:
Re: 92 525i computer problem? |
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In article <0Y-dnTm81axYr-TeRVn-sA@ez2.net>,
Jeff Strickland <crwlr@yahoo.com> wrote:
| Quote: | Except for the fact they have a Bosch part number and not even Bosch
will tell you what they are or sell replacements :-(
Well, it's a transistor. It's probably a power transistor, and it you
know if it's a PNP or NPN, finding a suitable replacement should be
easy.
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Haven't had mine apart, but have repaired early Range Rover ones, and they
use a Mosfet. That would be my choice as they're rather less likely to
short circuit damage. And although it was marked with a house number it
was easy enough to calculate a generic replacement.
However, the OP wasn't clear as to whether the fault was to an ignition
coil or injectors.
Is there a circuit diagram out there anywhere? The standard way without
would be to swap the supposed faulty drive device with a known good one
from the same ECU. However, it could also be the trigger circuit and once
you get into faulty microprocessors repairs become more tricky.
This site - although in the UK - might be of help. Some very
knowledgeable people there and they do re-cons.
http://www.atpelectronics.co.uk/
--
*El nino made me do it
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound. |
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Dave Plowman (News)
Guest
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| Posted:
Tue Nov 15, 2005 1:42 pm Post subject:
Re: 92 525i computer problem? |
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In article <4379C641.26A@unixnerd.demon.co.uk>,
John Burns <john@unixnerd.demon.co.uk> wrote:
| Quote: | Well, it's a transistor. It's probably a power transistor, and it you
know if it's a PNP or NPN, finding a suitable replacement should be
easy.
Always assuming you can use the info printed on it (minimal) to work out
things like the gain.
|
Many pretty cheap DVMs will do this for you.
--
*If love is blind, why is lingerie so popular?
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound. |
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John Burns
Guest
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| Posted:
Tue Nov 15, 2005 5:28 pm Post subject:
Re: 92 525i computer problem? |
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| Quote: | Well, it's a transistor. It's probably a power transistor, and it you know
if it's a PNP or NPN, finding a suitable replacement should be easy.
|
Always assuming you can use the info printed on it (minimal) to work out
things like the gain.
--
Who needs a life when you've got Unix? :-)
Email: john@unixnerd.demon.co.uk, John G.Burns B.Eng, Bonny Scotland
Web : http://www.unixnerd.demon.co.uk - The Ultimate BMW Homepage!
Need Sun or HP Unix kit? http://www.unixnerd.demon.co.uk/unix.html
www.Strathspey.co.uk - Quality Binoculars at a Sensible price |
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prop
Guest
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| Posted:
Wed Nov 16, 2005 3:06 am Post subject:
Re: 92 525i computer problem? |
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thanks for the help guys.i got a used ecu off ebay and should have it
tommorrow.i read that the last 3 numbers are critical and 402 is
compatable with 403 and 405.can anyone confirm that?thanks again |
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