Auto electrician in South West

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Pauls SLR
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Auto electrician in South West

Can anyone here suggest a decent garage / auto electrician who might be able to help finding a problem with my wiring. Having spent hours trying to work through the loom and then thinking I'd fixed it and having a couple of short blats I was gutted to find the car now won't start again. 
I've barely used the car this year and was hoping to get some miles on it over the Christmas break.

I'm in North Dorset but happy to travel as I really want this sorted properly now.

Thanks in advance

Paul

 

 

 

 

 

SM25T
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Do you want to try troubleshooting here ? You never know. Tell us all of the symptoms, the engine and year, type of immobiliser, etc.
Pauls SLR
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The car is a 2002 SLR so k series with Emerald ECU. 
I'm not getting either a spark or any fuel from the injectors. 
I have unwrapped the loom and looked at all the likely connections. I found a couple of connections which looked poor but didn't seem to have failed. I re-did some of these and then put the loom back in just held together with cable ties, not taped up. The car ran fine for a couple of runs out. I then decided it was fixed so took the loom out and taped it all up and re-fitted. Now I'm back to square one and exactly the same issue. 
I'm not sure now whether there is just a faulty connection or plug somewhere but I'm not sure I've got the energy to take it all apart again when I don't really have much expertise in electrical faults!

7 wonders of th...
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When cranking does the led on side of the Emerald show red or green...?

Pauls SLR
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It's red switching on the ignition then green on cranking

ncm
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I'm not getting either a spark or any fuel from the injectors. 

This could indicate a failing crank sensor. I had one on an old Corsa that played up occasionally , then worked perfectly for a few weeks before acting up again.. Unfortunately the car was not OBD compliant so I had to work out what was going wrong the old fashioned way......

Is Emerald OBD compliant? If not it might be worth testing your sensor (or just fit a  new sensor  for what they cost)

Brian.

7 wonders of th...
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does the fuel pump prime...?

Pauls SLR
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Brian

The Emerald is not OBD compliant. But thanks for the tip. I'll look at the crank sensor. 

7WW  yes the pump is priming.

 

rj
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Check the throttle pot (and it's connections) Output depending on throttle position should be between 0.2 and 4.7V ish. The more welly the higher voltage. (Output is pin 2) Across 1 & 3 you should find 5V.

Not throttle pot no spark nor fuel.
 

tbirds search:

Blatchat Google Search

Piers300
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Check the electrical multi pin connector under the T/B’s. Mine was green with corrosion and use contact electrical cleaner. It’s not easy to separate. Also clean all main earth connections. Also check earth connection for ECU.

Piers

Jonathan Kay
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On the original question:

Ivor Terrill in Oxford, but someone must know somewhere nearer...

I've always been pleased with them, but from the fault you're describing I might prefer a Seven specialist to a good electrician.

Jonathan