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 Post subject: E48 help needed
PostPosted: Sun Feb 18, 2018 7:44 am 
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Joined: Thu Dec 19, 2013 11:39 am
Posts: 6
ECU Model: No ECU
[youtube]https://youtu.be/We6UVTPHKXc[/youtube] My supercharged water meth injected 205Gti has been stood for a while and has now developed a problem. So far I’ve replaced the ford coil pack - coil feed wiring- ecu 12v and grounds - all engine grounds - relays - crank sensor- starter motor. I’m occasionally getting a pop from the exhaust and almost tries to start but my laptop no longer connects to the ecu to check for faults and now I’m wondering if it’s an ecu fault
https://youtu.be/We6UVTPHKXc


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 Post subject: Re: E48 help needed
PostPosted: Sun Feb 18, 2018 8:07 am 
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Joined: Sun Jan 27, 2013 6:08 pm
Posts: 262
ECU Model: S60 Pro
Firmware Version: 29
Looks like you aren't getting power to either the ECU or the coils on cranking ie key 3 and only at ket 2 (normal run postn.) hence spark when stopping cranking!


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 Post subject: Re: E48 help needed
PostPosted: Sun Feb 18, 2018 8:42 am 
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Joined: Thu Dec 19, 2013 11:39 am
Posts: 6
ECU Model: No ECU
I’ve tried it with a 12v coil feed straight from the battery and made no difference

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227bhp Supercharged 205 1.9 gti 8v


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 Post subject: Re: E48 help needed
PostPosted: Sun Feb 18, 2018 9:10 am 
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Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2900
Location: Norn Iron
ECU Model: No ECU
So instead of throwing parts at it....

Have you confirmed 100% there is 12v and ground at the relevant pins on the ecu both on key on and during cranking ?
Likewise injectors, pump etc etc

You say you have no laptop comms....why ? Is this with a laptop/cable that had worked previously ? Or a new computer/setup ?

Does the fuel pump prime on key on ?

Do you have a 5v supply at the relevant ecu sensors that should have a 5v supply if the ecu was alive ? TPS would be an easy test.


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 Post subject: Re: E48 help needed
PostPosted: Sun Feb 18, 2018 9:33 am 
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Joined: Mon Aug 01, 2011 8:20 am
Posts: 178
Check the 25 pin connector, it may need a clean on both sides if the car has stood idle for a while in damp conditions. Otherwise something has changed like a spike to the ecu has scrambled the map, you need to reload your map if you have saved a copy ( I do hope you have !) I have seen it lots of times.


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 Post subject: Re: E48 help needed
PostPosted: Sun Mar 11, 2018 6:38 am 
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Joined: Thu Dec 19, 2013 11:39 am
Posts: 6
ECU Model: No ECU
.. got constant supply to ecu and 5v to TPS ect while cranking .. fuel pump primes as it should and laptop is the old one I’ve had connected previously......what’s next to check ?

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227bhp Supercharged 205 1.9 gti 8v


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 Post subject: Re: E48 help needed
PostPosted: Sun Mar 11, 2018 7:59 am 
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Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2900
Location: Norn Iron
ECU Model: No ECU
So the ecu is alive, that's a good sign.

You need to figure out why you have no comms and go from there.

Are you using a USB adaptor or a proper serial connection ? Is the lead definitely in good condition ?


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 Post subject: Re: E48 help needed
PostPosted: Sun Mar 11, 2018 3:31 pm 
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Joined: Mon Aug 01, 2011 8:20 am
Posts: 178
You need to connect to the ECU with Dtawin otherwise you are pi**ing in the wind trying to find the fault, I still think the map is corrupted. I have seen it many times, worked on them for 11 years.

Tony.


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 Post subject: Re: E48 help needed
PostPosted: Fri Mar 30, 2018 3:28 am 
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Joined: Mon Aug 01, 2011 8:20 am
Posts: 178
Did this problem get fixed if so why do people ask for help then never let us know the problems were solved?


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