Omega Owners Forum

Chat Area => General Car Chat => Topic started by: tigers_gonads on 28 September 2011, 15:04:47

Title: 635 csi long shot
Post by: tigers_gonads on 28 September 2011, 15:04:47

Long shot I know but has anybody on here have a Bmw 635csi 84 model engine ecu in there garage or know of one anywhere ?

A friend of mine is rebuilding one for a customer.
Last week, the battery was flat so his apprentice conected a battery pack up (the wrong way) and flashed the ecu  :'( :'(

Thy are like rocking horse sh*t apparenty and he is recieving stupid quotes just to take the cover off the thing to check it out  :(

Any advise or pointers welcome  :y

Title: Re: 635 csi long shot
Post by: 2woody on 28 September 2011, 17:43:35

a later 3.5 ecu shouldn't be that difficult to install

Title: Re: 635 csi long shot
Post by: tigers_gonads on 28 September 2011, 18:18:18

Quote from: 2woody on 28 September 2011, 17:43:35

a later 3.5 ecu shouldn't be that difficult to install

Do you know if they are a streight swap ?

Title: Re: 635 csi long shot
Post by: Kevin Wood on 28 September 2011, 19:05:33

I have a friend who has a 635CSI, 2002, etc and might well be involved in owners clubs. Maybe he'll be able to help.

There's a chance it's only the power supply circuit that has gone pop, in which case it might be a simple repair. I'd offer to have a look if I were closer. :-\

Title: Re: 635 csi long shot
Post by: tigers_gonads on 28 September 2011, 19:11:45

I'll have a word and find out what exactly what the ecu / car is doing.

I know the local auto sparky has had the lid off but couldn't see anything  :-\

Title: Re: 635 csi long shot
Post by: tigers_gonads on 28 September 2011, 19:20:05

Now had a word

The engine cranks over.
No spark.
The ecu is making the injectors lock open / filling the cylinders up with fuel.

Title: Re: 635 csi long shot
Post by: sierrapaul on 28 September 2011, 19:24:50

one out of a 535 or 735 0f arond a similer year should be the same.i think from 82 up to around 1990.anything with the 3.5 single cam 6 should be the same i think even the 3 litre should be the same.used to play with loads of old bmws.paul

Title: Re: 635 csi long shot
Post by: tmx on 29 September 2011, 00:35:45

Shropshire BMW spares are quite useful for older bmws as are BMW land theres a bmw dealer on their advertising availibility of original parts

Title: Re: 635 csi long shot
Post by: tigers_gonads on 29 September 2011, 09:16:19

Quote from: Kevin Wood on 28 September 2011, 19:05:33

I have a friend who has a 635CSI, 2002, etc and might well be involved in owners clubs. Maybe he'll be able to help.

There's a chance it's only the power supply circuit that has gone pop, in which case it might be a simple repair. I'd offer to have a look if I were closer. :-\

If you could have a word it would be apreciated  :y

Title: Re: 635 csi long shot
Post by: Kevin Wood on 29 September 2011, 11:04:18

OK. He suggests checking the following:

http://www.fabdirect.com/
http://www.fritzsbits.co.uk/
http://www.bigcoupe.com/phpBB2/index.php

Also suggests that an E28 535 might have the same ECU.

If the injectors are spraying constantly it suggests that the drivers for these have fried at least. :'(

Title: Re: 635 csi long shot
Post by: tigers_gonads on 29 September 2011, 13:05:59

All info past on  :y

Thanks for all your help lads  :)