GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: Mike87Turbo on 22 January 2011, 15:54
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As some of you may know, this is the dreaded weekend of swapping an AGG engine into my missus mk3 golf. I was going to swap absolutely everything but upon removing the dash i have realised now how much of a helen hunt its going to be!
What i was wondering is:
Will the AGG with the engine harness attatched to it fit the bay/dash harness of the 1.4 golf?
I know the ECU needs to be swapped but will the dash/bay harness have the correct wires in it to take the new engine loom?
Any help on this would be appreciated as it would save me around 29948889390.63 man hours in total.
Please somebody tell me its plug and play!!
Thanks, Mike
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:lipsrsealed:
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What does that mean lol?
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I hate to say it but you were kinda prewarned about this conversion.
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I know! I'm still not afraid of doing it but as the car needs to be back on the road relatively quickly, coupled with the fact that I've never undertaken a complete engine swap before, all is not as straightforward as perceived. I'm not the first, or the last to encounter this issue.
The conversion is still going ahead either way, I was just after a bit of advice as to whether the engine could be swapped, not for an 'I told you so'.
I'm not being funny, but my last topic got strayed away from what I was asking as well and wasn't any help either!
Cheers, mike
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Fair play to you mate, don't take it wrong way as if you've got the time, space and skill then there's no reason you shouldn't go ahead with it. It's not like it isn't something that hasn't been undertaken thousands of times by others in the past either. It's just that from my understanding it's far from a quick and simple plug and play switch over.
There are plenty of very knowledgeable people on this forum that can certainty point you in the right direction when it comes to figuring out the technicalities of the loom etc. Good luck anyway and i look forward to seeing the end result. :smiley:
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Cheers, sorry if i was being a bit of a nob, im just sick of asking questions and getting completely useless answers lol! Too many people saying that i shouldnt do it for one reason or another.
End of the day its my project and my time, i just require a little help from somebody that knows more about the mk3 wiring than me.
Cheers, Mike
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TBH now I've seen the work involved I don't really wanna lol! I'm now just wondering if the gti engine and engine loom will fit to the 1.4 dash loom. It will be far easier and back on the road quicker if it will!
Cheers, mike
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TBH now I've seen the work involved I don't really wanna lol! I'm now just wondering if the gti engine and engine loom will fit to the 1.4 dash loom. It will be far easier and back on the road quicker if it will!
Cheers, mike
It might do but I am not sure where you stand with the fuel pump etc, I would say that you would better to fit the rest of the dash loom.
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Well the pump should be the same wiring in either car shouldn't it? I'll investigate more today and do some wire counting :D
Cheers, mike
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Well the pump should be the same wiring in either car shouldn't it? I'll investigate more today and do some wire counting :D
Cheers, mike
The GTI has a lot more extras fitted so if you check the fuseboxes you will see lots of extra relays and fuses that the 1.4 will not have so you then need to find out if the wiring is in place I very much doubt it.
Fuel pumps are different also not sure if you feed and return lines fitted or you may even find they are bigger on the GTI.
Don't forget that the 1.4 is only single point injection so switching to the GTI spec will mean everything being swapped over.
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Its all fairly straight forward to be honest.
The fusebox is the hub for all looms so there will be no problem with the dash loom thats already in the 1.4 the only other thing you will need to do is swap the clock loom (from clocks to fusebox) so you can use the MFA.
Just swap the whole 1.4 engine harness with the GTI one at the rear of the fusebox, there is no need to swap the complete fusebox.
You will need to add and swap the appropriate relays for GTI ones.
I'm pretty sure all the lift pumps in the tank are the same.
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as above, the only one you need to swap is the entire engine harness. the existing interior loom is the same, even the bit to the back of the car to the fuel pump. you will have to change the fuel pump for a GTI one as 1.4 is lower spec.
the main worry is getting the same type of engine harness as whats fitted to your car, later mk3s have the engine and lighting loom all bundled together, early models have 2 separate looms for the engine and lighting. obviously if the loom you have is different to whats in the car now, you're going to have to do some fiddling or find another loom to match.
if you have an early car with separate engine + lighting looms you might be out of luck as you may not be able to get an AGG loom that has a separate engine loom
the clock loom there are also different types. some have a 3 pin plug on for the 2 indicator wires and the mfa signal wire for the mpg, some have these on separate plugs. either way your car will probably have the wiring, just a case of matching it up. if you want the mfa you will need to add the loom between the mfa stalk to the fusebox plus change the clocks and the stalk obviously