Club G40 Forum

Technical => Engine and Transmission => Topic started by: polo-lover! on November 08, 2012, 12:31:02 AM

Title: HELP PLEASE :) GT to G40 confusion
Post by: polo-lover! on November 08, 2012, 12:31:02 AM
Hi guys,

I have a G40 but due to lack of funds i have had to put a GT engine into her untill i can afford a g40 conversion, i seem to have done everything that i know of but she wont start, not even turn over, nothing, is there any modifications i have to make or add to to make this work as i thought it was simply plug and play  ???

please help guys.

Many thanks

Jamie
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: hayesey on November 08, 2012, 09:19:43 AM
so there's no sign of life at all?  The starter motor doesn't even spin?  Start with the basics, check that the battery is charged, check the thick wiring between the battery and the starter motor.  check that your engine earth straps are all in place and OK.
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: polo-lover! on November 08, 2012, 06:34:55 PM
no mate, no sign of life at all, the lights and indicators and wipers work, there isnt the usual humm sound that comes when you turn the key that 1 click if you know what i mean, it completely dead, i have checked what you suggested and had no luck, any chance you know what to do from here??

many thanks

jamie
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: g40will on November 08, 2012, 06:56:34 PM
That humm is your fuel pump primeing that could be a relay or fuse or dodgy connexion hope this helps, is it turning over and failing to fire or is it not doing any thing at all?
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: polo-lover! on November 08, 2012, 08:59:16 PM
not doing anything at all  ???
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: gaz g40 on November 08, 2012, 09:55:39 PM
have you put the connector on the starter in the right place..... little wire where theres two places for it to fit and itl only work on one of them
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: POLOMON on November 09, 2012, 09:07:45 AM
This is a wiring issue then, given that, have a search for my username.... If there had to be a wiring issue sods law i had it when i fitted my G, It could shed some likght on your issue.

Good luck :-)
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: hayesey on November 09, 2012, 09:43:45 AM
you're going to have to start checking the wiring.  The fact the fuel pump doesn't prime could be a sign that either the fuel pump relay or ECU relay isn't working (both are on a clip next to the ECU).  But the starter should still turn, that's just controlled by the ignition switch.  Worth checking the ignition switch actually! 
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: polo-lover! on November 09, 2012, 09:53:13 AM
i shall have a play today and get back to you at the end of it, thanks so much guys! hopefully she will be running later on! :)
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: Craig g on November 09, 2012, 03:48:33 PM
Looks like were in the exact same situation,
I've just converted my 1.0 to a g40 n went to start it for the first time and all I get is a click now fuel pump priming or anything just a click, been searching through all the posts on the forum trying to find a solution but still nothing :(, if you solve yours let me know :)
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: Andy on November 09, 2012, 06:21:53 PM
Check the connectors at the back of the fusebox where the interior harness joins the engine bay harnesses.
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: polo-lover! on November 10, 2012, 08:33:32 PM
still nothing guys.... :(
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: Justin14100 on November 11, 2012, 03:13:31 AM
you swapped the ECU over right?
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: polo-lover! on November 11, 2012, 10:37:39 AM
the GT ecu is in there... with the GT ecu loom.. is that correct?
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: Andy on November 11, 2012, 11:28:41 AM
Did you check the connectors at the front and rear of the fusebox were okay?
Title: Re: HELP PLEASE :) GT to G40 confusion
Post by: dekerf1996 on November 12, 2012, 04:49:52 PM
I would have a go at what Andy has suggested. Had this problem with two of my conversions, the wire blocks coming out of the fuse box appeared to be connected fine, but in reality they weren't.

Ended up disconnecting and reconnecting them a few times and they eventually worked. All it takes is the right/wrong wire not to be connected and you get no power to the engine wiring and therefore it won't turn over. Had my lights working as that was connected ok