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#701076 28/04/21 07:58 PM
Joined: Mar 2021
Posts: 32
Likes: 2
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Just Getting Started
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Just Getting Started
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Joined: Mar 2021
Posts: 32
Likes: 2
Hi guys been doing a bit of troubleshooting on a 1985 twin cam and while I am getting spark I have no power to the ECU or the double relay, any ideas?

Joined: Jan 2019
Posts: 938
Likes: 46
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jan 2019
Posts: 938
Likes: 46
I just join in.
Mine is a non starter as well and I donˋt have a clue.
Hopefully there will be time on Monday to dig deeper.

It was running well till I turned it off for parking.

10 minutes later there was no ignition.
After a long stating torture it came back on two to three cylinders.
That was it...

Let´s see..


1973 2CV AK400 Ralley
1985 plus 4 four seater
1992 Peraves ecomobil
bicycles (pedersen to recumbent)
Joined: Mar 2021
Posts: 32
Likes: 2
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Just Getting Started
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Just Getting Started
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Joined: Mar 2021
Posts: 32
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I have ordered a new ecu relay to see if that works will let you know.

Joined: Jan 2019
Posts: 938
Likes: 46
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jan 2019
Posts: 938
Likes: 46
Solved mine - yippie!!!

After quite a lot of try and error in repeating all the logical pathways.
The trouble was all at the start.

It was a non starter and then again with true force an full open throttle a starter on 2 to 3 cylinders.

Went for fuel lines, filters, spark plugs, ignition, ..... all seemed fine.

At the end it seems to be the air intake.
Better than new excluding the filter from the system.

Ordered a new one and let's see;-)


1973 2CV AK400 Ralley
1985 plus 4 four seater
1992 Peraves ecomobil
bicycles (pedersen to recumbent)
Joined: Jan 2019
Posts: 938
Likes: 46
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jan 2019
Posts: 938
Likes: 46
Back in the game.
At the end it seems that the airflow meter was the guilty part...

Feels much better now:-)


1973 2CV AK400 Ralley
1985 plus 4 four seater
1992 Peraves ecomobil
bicycles (pedersen to recumbent)
Joined: Mar 2021
Posts: 32
Likes: 2
N
Just Getting Started
OP Offline
Just Getting Started
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Joined: Mar 2021
Posts: 32
Likes: 2
Thanks I did similar I played with the air flow meter and replaced the relay still would run and then die, makes no sense but I then fitted the wrong ecu on purpose and it ran fine, so swapped for the correct ecu and perfect bizarre

Joined: Jan 2019
Posts: 938
Likes: 46
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jan 2019
Posts: 938
Likes: 46
Still not sure if it will be success next time.
Atthe moment we focus on a thermostat and hopefully I`ll get her back on Tuesday...

But I suppose the have got smething wrong in den wokrkshop - it is not for sale...

[Linked Image]


1973 2CV AK400 Ralley
1985 plus 4 four seater
1992 Peraves ecomobil
bicycles (pedersen to recumbent)
Joined: Nov 2018
Posts: 1,065
Likes: 23
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Has a lot to Say!
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Has a lot to Say!
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Joined: Nov 2018
Posts: 1,065
Likes: 23
Very nice ALFA…

Greets René


2018 plus4 (sports green)
with a homemade really shiny red tinted dash…
Joined: Jan 2019
Posts: 938
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Talk Morgan Regular
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Talk Morgan Regular
Joined: Jan 2019
Posts: 938
Likes: 46
still not done...

So after changing the airflow meter and both thermostats it is still a non starter when the engine is warm.

Cold start is not a problem. If the engine is warm there does not seem to be a spark although you can smell gas...

Any idea is welcome - I just don`t know where to look at next...

Miklos


1973 2CV AK400 Ralley
1985 plus 4 four seater
1992 Peraves ecomobil
bicycles (pedersen to recumbent)
Joined: Dec 2009
Posts: 37,428
Likes: 978
Tricky Dicky
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Tricky Dicky
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Joined: Dec 2009
Posts: 37,428
Likes: 978
I would try a new ignition coil, cheap enough and known to break down at temperature as when you shut the car down the under bonnet temperature carries on increasing so restart becomes impossible.


An aerosol of freeze spray can help a lot with diagnosing possible electrical component breakdowns such as coils or ignition amplifiers.


2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev





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