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Evening all. Over the past few years I have been rebuilding my mk1 gti cab. I have the standard 1.8 8v lump but am having issues getting it running. I think I may have various electrical  plugs in wrong places. Any members with a runner in North Wales so I can have a look and cross reference. Thanks in advance.

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Post up some pictures and I'm sure we can tell what's wrong ?

Taking pictures and labels on wires/connections helps a lot when refitting stuff.
I've loads of pictures from when I removed my engine etc I can send/share if no one near you or loads on here and google etc… :thumbs:

1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 290,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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Assistance required in North wales

Thanks Mark. Will get some to you after work today. Thanks

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RubJohnny has some great info here:
https://clubgti.com/forums/index.php?threads/fusebox-faq.219775/

as well as the a2resource.com

Electrical Systems

Occasionally I can remember things or book mark them .  :) . Great info there thanks Rub.

What do Divorces, Great Coffee, and Car Electrics all have in common?

They all start with GOOD Grounds.

Where are my DIY Links?

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Assistance required in North wales

Hi all. Right there are 2 plugs that go into idle speed boost valve. I have pictured below wire colours which have been extended by previous owner. Which one goes where please

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Assistance required in North wales

Also. I have a spare plug as attached in photos. Cannot figure out where this goes?

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Assistance required in North wales

A better pic of wire colours for spare plug

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Assistance required in North wales

Tried again

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Your 5th injector (blue coloured) is the wrong way up, the electrical connection should be on the bottom.

Your idle control valve is also the wrong way up, undo the 2 nuts on top of the rubber bushes and flip it over, you may need to re route the rubber hoses.

I found the hardest thing getting the engine back in was working out the order and routes for the cables and hoses….

If you have a look at my project page towards bottom of page 1 you can see what I mean…

https://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-mk1-golfs_2%2Fmy-daily-drive-1988-gti


I'll have a look at my electrical connection in a bit.  :thumbs:

1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 290,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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Assistance required in North wales

Pictures..
Idle control valve



5th injector


I’m not sure where your other wires are on your engine so the next couple of pictures may not help??

Some sort of switch attached to the throttle body


Thermo time switch on front coolant flange which tells the 5th injector to fire.



Let me know if you need any other pictures….


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1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 290,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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Assistance required in North wales

I missed this picture.. Aux Air valve behind the inlet manifold..





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1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 290,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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Assistance required in North wales

Thanks mate I will have a look after work tommorow. The link of your build not working for some reason. Thanks again for info.

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