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ECU problem...
Posted: Wed Jul 13, 2005 2:15 pm
by shardman
Hi, i have an '89 325 sport, a few weeks ago i fitted one of Ant's upgraded chips and the car would not start. I replaced it with the standard chip and still nothing....I have spoken to Ant and he has given me help and advice but he does not know what is is, I then put it in to an Auto electrical shop and they looked at all the immobiliser/alarm wiring and found nothing-petrol is getting to the engine, but no spark...they reckon it is an ECU problem and the only way round is a new ECU!!!
Anyone out there know what i can do-or does anyone have a spare ECU I could try....? If it helps I am in the Cheltenham area if there is anyone near me.....
Really pissed off with this as love my 325 but dont want to spend nearly a grand on fixing it!!
Cheers
Steve
Posted: Wed Jul 13, 2005 2:35 pm
by rowemeister
A custom or standard chip should not damage your ECU m8.
All an eprom does is give data/list of comands to the microprocessor and that tells the rest of the circuit what to do.
Have you checked the eprom chip you fitted is the correct way around.
Have you disturbed an imobiliser has these are usually located next to the ECU.
Go back to the ECU and check all the connections to it and near it are secure + check the chip you fitted. It only takes one bent leg or the wrong way round etc
Also check no pins on the ecu or the connector have been pushed back!
Posted: Wed Jul 13, 2005 3:17 pm
by shardman
I know it shouldnt damage...the auto elec peopkle looked at the immobiliser/calarm and must surely have made sure that lot was ok.....?
Will have a look in the ECU again and check no damage to the pins, sure it was put in the right way as there is a little cut out and that matches with the cut out on the board.....
is there any way it could have shorted the whole ECU out?
Did notice when I took ther ECU out that there were bare wires from something wrapped around the bolts that hold the ECU in - seemed live-prob for the alarm or something.....
Could it be the OBC immobiliser?
cheers for your help by the way
Steve
Posted: Wed Jul 13, 2005 4:51 pm
by rowemeister
Not sure what they are mate. Could have something to do with it though!
You could do with plugging in another ECU just to confirm. Find someone on this forum who lives in your local area and is willing to swap ecu to confirm.
Posted: Wed Jul 13, 2005 5:11 pm
by shardman
thanks buddy-was hoping for just that.......appreciate your help
Steve
Posted: Wed Jul 13, 2005 5:15 pm
by glenn
i have a motronic 172 ecu here for a 320.
if someone on here can tell you if it will run your car ( i'm not sure)
then you can have this one, foc
Posted: Wed Jul 13, 2005 5:19 pm
by shardman
that would be awesome!!!
cheers
Fella, need some luck
Steve
Posted: Wed Jul 13, 2005 5:53 pm
by glenn
pm sent
Posted: Wed Jul 13, 2005 7:23 pm
by rowemeister
Yes its the same ecu. The map on the chip is different but should still fire the engine up.
Your 325 ecu is a 173 and the 320 a 172 but the unit is the same. its just down to the different chip installed.
Posted: Tue Jul 19, 2005 10:43 am
by shardman
Hi out there-there must be someone that has an ECU for me to try or buy? Desperate to get this car going-I need to sell it by the end of the month.....
Posted: Tue Jul 19, 2005 10:46 am
by Wilson
what about Glenns one?
Posted: Tue Jul 19, 2005 12:58 pm
by shardman
cheers mate, have already sent him a pm and wil call him tonight to see if its still available...
Posted: Tue Jul 19, 2005 2:53 pm
by glenn
hi mate,
not received any pm's,
are you sure you sent them?
still have the ecu here, yours if you want it mate.
you have my numbers.
Posted: Tue Jul 19, 2005 5:23 pm
by shardman
cool fella-sent a pm...?
anyway, have your numbers and will call you laters..
Steve