MPi stalling

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Charless
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Re: MPi stalling

Post by Charless » Fri Aug 07, 2015 11:49 am

Yes, except that when it happens on the road, the tacho keeps reading, the needle doesn't drop to zero which it does when the ignition switch key is turned off while driving.
Keep 'em coming!

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Rob Bell
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Re: MPi stalling

Post by Rob Bell » Fri Aug 07, 2015 2:46 pm

How do you know that electrical power has failed?

I agree that the above suggests that the main ignition has not failed.

Loss of power to the ignition relay?

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Charless
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Re: MPi stalling

Post by Charless » Sat Aug 08, 2015 5:42 pm

Bit of a false dawn, I found the bolt grounding the battery -ve to the inner wing had undone itself a few turns tightened it up and the car started fine, revved and ticked over fine........and then died and wouldn't restart! Back to square one, except that now I am uncomfortable about taking it on the road if it won't restart.

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Re: MPi stalling

Post by talkingcars » Sun Aug 09, 2015 10:06 am

That is one of the problems solved, now on to the next.
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Rob Bell
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Re: MPi stalling

Post by Rob Bell » Mon Aug 10, 2015 12:19 pm

Engine earth strap?

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Charless
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Re: MPi stalling

Post by Charless » Tue Aug 18, 2015 10:42 pm

OK it is sorted!
I am extremely lucky that Tony ('itsonlyme' of this forum) lives nearby and was kind enough to supply me with a suite of known good sensors to start the diagnosing with. When I was getting no further, he came over and swapped out my ECU and 5AS with a known good set for a very reasonable price. Bingo!
The problem was obviously the ECU. When we took the old one apart it looked OK, but had green conformal coating on both sides making a visual check pretty pointless and any rework pretty random and time consuming. The old one had done 190k miles but many cars would have been scrapped for the cost of a new one or professional diagnosis.

Note that the error message on a modern professional garage code reader consistently came up with two faults - I can't recall the exact wording - 'fault with injectors 1/4' and 'fault with injectors injectors 2/3' . The only electrical commonality for these pairings is the negative drive in the ECU, as the positives are supplied individually to each injector. At this time (040D) the pscan was not able to deduce these faults, but we live in hope!

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Rob Bell
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Re: MPi stalling

Post by Rob Bell » Wed Aug 19, 2015 9:12 am

Great news Charles! :D Let Philip know the diagnosis, the codes etc, and he may be able to provide this information on the next firmware update :D

Great that Tony was able to help too. I've been trying to get hold of Tony for ages - but he hasn't responded to texts or PMs and his mobile has been switched off when I've tried to call him? :?

itsonlyme54
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Re: MPi stalling

Post by itsonlyme54 » Wed Aug 19, 2015 6:58 pm

Rob Bell wrote:Great news Charles! :D Let Philip know the diagnosis, the codes etc, and he may be able to provide this information on the next firmware update :D

Great that Tony was able to help too. I've been trying to get hold of Tony for ages - but he hasn't responded to texts or PMs and his mobile has been switched off when I've tried to call him? :?
Rob, I changed my phone company, new number is 07708736990

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Rob Bell
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Re: MPi stalling

Post by Rob Bell » Thu Aug 20, 2015 3:56 pm

Ah! That'd be why! Thanks Tony - will amend my contact list, thanks :thumbsu:

pscan.eu
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Re: MPi stalling

Post by pscan.eu » Tue Feb 16, 2016 11:49 am

Hi Charles,

Send me the old broken ECU. I can power it up on the bench and see why pscan.eu didn't read those codes.

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Re: MPi stalling

Post by talkingcars » Tue Feb 16, 2016 9:17 pm

Might be worth pmailing him as this is quite an old thread.
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