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Looking for an ECU for a 3.5


 
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the swede
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PostPosted: Fri Jul 04, 2014 8:41    Post subject: Looking for an ECU for a 3.5 Reply with quote

Bit of a weird question:

A friend in Belgium has a similar 3.5 GDi as I do and needs to get the ECU replaced according to the dealer (but seems to not steer the ignition correctly anymore).

Problem: Such ECU's can only be got from Japan by the dealer and it will cost 1300 euros.

So we were looking to try to source him one second hand or refurbished from the UK.

Anyone knows of a good breaker?

Or should he take the ECU out and get it repaired in the UK?

In Belgium there are really only a handfull 3.5 GDI's on the road and the dealers are not used to work on them.
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peteinchad
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PostPosted: Fri Jul 04, 2014 9:11    Post subject: Reply with quote

Try these HERE
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the swede
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PostPosted: Fri Jul 04, 2014 10:24    Post subject: Reply with quote

Thanks.

He's also been contacting a few people for a repair.

Is this actually a weak spot on the 3.5? I never heard of an ECU packing up.
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peteinchad
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PostPosted: Fri Jul 04, 2014 10:31    Post subject: Reply with quote

There's nothing posted on here about common faults on them as far as I can tell.
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the swede
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PostPosted: Fri Jul 04, 2014 11:32    Post subject: Reply with quote

peteinchad wrote:
There's nothing posted on here about common faults on them as far as I can tell.


Tha's also why I find it incredible. Never heard of this issue. Also been myself member of the MLR for many years and been playing with the ECU on my Evo and never heard that an ECU would suddenly pack up.  Confused
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peteinchad
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PostPosted: Fri Jul 04, 2014 11:51    Post subject: Reply with quote

I think the glow plug ECU on the 2.5 diesel can fail through iffy soldered joints on the PCB but I don't know of any others failing.

Only way to test is to replace with another one and see if it cures the fault.
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the swede
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PostPosted: Mon Jul 07, 2014 14:25    Post subject: Reply with quote

Meanwhile he found a replacement ECU. Let's see.
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the swede
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PostPosted: Sat Aug 30, 2014 11:51    Post subject: Reply with quote

Weird. We've had the ECU swapped on my friend's car with a replacement ECU and it does not start anymore.

The dealer in Belgium says you also need the key and the key ring antenna and immobiliser ECU of the same car. That is, what they say, it says in the Mitsubishi guidelines.

I called 3 breakers in the UK specialised in Shogun's though and they all say that they never sold the keys before with the ECU's and never got a problem.

I am being told "if you have the right part number, it is plug and play". Still, we're on the second dealer and he says the same as the first dealer "you need key etc also".

Who's right?

I'd be surprised that breakers would all keep telling me that they sell the ECU's separately and never have an issue.

So who's right?
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peteinchad
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PostPosted: Sat Aug 30, 2014 15:34    Post subject: Reply with quote

If the dealers were correct then it would mean that Mitsubishi would have to make matched ECUs / Keys and Immobilisers at the time of building the trucks.

I can't see them doing that. It would make more sense to be able to fit any immobilser to any ECU.

Looking at the ones for sale on eBay - none come with keys or immobiliser. They wouldn't bother advertising them if people just sent them back because they couldn't get them to work.

To be honest, I wouldn't believe much that a dealer says - the times I have had to use them have shown that they are more interested in fitting as many new parts as possible. They have a vested interest in selling the immobiliser and ECU and two keys.

I assume that there are two terminals on the ECU that connect to the immobiliser and that the immobiliser either connects them together or disconnects them when the immobiliser senses the presence of the transponder in the key.

I would have thought that if you can find the output from the immobiliser then it would be possible to remove it - it won't be a very sophisticated system.
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PostPosted: Sat Aug 30, 2014 17:12    Post subject: Reply with quote

if it,s the mk3 shogun pajero,s then yes you need the key and the imobilser chip as they are matched up together,unless you can reprogramme the replacement ecu to the current key..don,t always take breakers advice some genuinely don,t know and others will say anything for the sale Exclamation
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PostPosted: Sun Aug 31, 2014 8:52    Post subject: Reply with quote

It depends on year of vehicle plus what country vehicle was made for.
I often get this problem,  a guy brings me a vehicle asks why it work with other ecu etc.
it needs the key etc as all paired up.
breakers always sell ecu without keys etc.
its only ok to do this if you send both ecus off to pavilec, they will swap your chips over inside ecu or rob bits out of other ecu to fix problem.
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the swede
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PostPosted: Tue Sep 02, 2014 10:46    Post subject: Reply with quote

Car is a 2000.

We're not sure what to believe anymore.

He's looking for the parts now though.
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nick-dudley
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PostPosted: Tue Sep 02, 2014 10:59    Post subject: Reply with quote

Earlier ecu's used to suffer with several issues, usually stemming from leaking capacitors, where the capacitor leak would corrode the pcb leading to internal shorts or component failures. Newer ones I would have thought would be of better design, but I suppose never say never. Newer ones will be immobilized and need to be matched to the chip in the key and the reader, so tbh if buying 2nd hand you need the chip, ecu and reader. Most places that specialise in ecu repair can match and program a new one for you.
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the swede
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PostPosted: Fri Sep 19, 2014 15:33    Post subject: Reply with quote

nick-dudley wrote:
Earlier ecu's used to suffer with several issues, usually stemming from leaking capacitors, where the capacitor leak would corrode the pcb leading to internal shorts or component failures. Newer ones I would have thought would be of better design, but I suppose never say never. Newer ones will be immobilized and need to be matched to the chip in the key and the reader, so tbh if buying 2nd hand you need the chip, ecu and reader. Most places that specialise in ecu repair can match and program a new one for you.


Complex indeed.

We're hoping to get his car back on the road soon though Smile
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