Injector wiring loom

[MisterTee]

Morning all

Don’t suppose anyone has a decent injector wiring loom going spare for a non cat car?

Andy

[MisterTee]

Oh yeah, sorry, that might be helpful ....

2.9 Ford

[MisterTee]

Thanks Ray

I might just take you up on your offer. I’ve just had the engine and gearbox rebuilt and whilst the car was in bits, I had a new injector loom made. Since the rebuild the cold start has stopped working, and I wondered whether it was a problem with the loom? Also the car ran perfectly (once warm) on the rolling road for over two hours, but has since developed a misfire, now I’ve got it home!

Going to change the dizzy cap, rotor arm and ht leads in the hope that will cure the misfire, but still a bit baffled by the cold start issue.

Andy

[MisterTee]

Many thanks

Not getting anywhere near the car this week due to work, but will get back to you and RayTVR next week (hopefully)

Andy

[MisterTee]

No worries, thanks for checking.

Andy

[MisterTee]

I appreciate that I do need to do some investigative work, but just haven’t had the time this week to get near the car.

I’m sure I will get it sorted, but when thinking it through the loom was the only thing different, electronically, that has changed since I had the engine rebuilt which is what made me doubt the loom.

[MisterTee]

Morning Ray

A combination of work, lack of time and just being a bit fed up with it all has led to little investigation on this.

Been and had a poke about this morning and the full near side bank of cylinders are not firing at all. Whipped the plugs out and gave them a clean, but no different.

Might have to borrow your tester if the offer is still there? (You have mail!).

Any other ideas on this really welcomed? Could it be a timing thing?

Cheers

Andy

[MisterTee]

Hmm, thanks for that.

That makes me even more suspicious about the injector loom - as I say, that is the only thing different from a wiring/electronic perspective.

[MisterTee]

Thinking about it, none of the plugs were wet when I took them out, which could also suggest fuelling.

Other than changing the injector loom, what else could I try?

Many thanks

Andy

[MisterTee]

Thanks chiefyo, might give them a try!

Andy

[MisterTee]

I’m already pretty annoyed ....spent a fortune getting the engine and gearbox rebuilt and haven’t even driven it yet!

[MisterTee]

Well, after how many Sundays of rain, I finally managed to get the car out of the garage so that I could try and trace my problems with the use of a Star Tester, kindly loaned by @RayTVR 👍

Without the engine running, the star tester shows two error codes - 16 and 12 :-

16 - Electronic ignition - IDM circuit fault
12 - Idle Speed Control motor or Air Bypass not controlling idle properly

Sadly I wasn’t able to run the test with the car running due to the battery going flat (note to self!) before I managed to get the thing to fire.

Also, the injector loom that Ray also loaned me did not fit due to different connectors (see pics below).

So, apart from stating the obvious (the problem is electronic ignition and ISCV), anyone got any suggestions as to where I should start with this please?

Ta

Andy

Injector loom connectors (my car)


Borrowed loom

[MisterTee]

Thanks Ray

I did check that the plug into the dizzy was tight and fitted properly. Couldn’t see anything untoward, but probably needs a closer inspection. At least it’s a starting point, which is more than I had before!

[MisterTee]

Many thanks for your reply Penelope. It definitely sounds like you could be on to something here.

Unfortunately, I’m useless with electrics and electronics but will ask at our club meet tomorrow whether anyone can help.

Will keep you posted.

Thanks again.

Andy

[MisterTee]

Hi all

Apologies for the lack of responses.

Thanks for the info. I’m almost convinced it is the wiring loom, so in contact with the company who made it for me.

I’m determined to get this sorted before the Spring - I can’t be having another year without my TVR!

Happy New Year folks

Andy

[MisterTee]

Hi all

Making slow progress on this - a combination of too much (non-tvr) work to do and not enough time.

I’m just needing a couple of new connectors then I should be able to test out another loom to see if it cures my problems. Penelope has convinced me it is a loom/diode related issue, which based on all that I have read I tend to agree with.

RayTVR kindly loaned me a spare loom, but the main connector was different to mine on the car. I’ve managed to get another loom to call my own now and just need to get that fitted - must get your kit and loom back to you Ray (sorry)!

Anyone any ideas where I can get the ‘male’ connector to fit this? I’ve scoured various websites but can’t seem to find anything that looks remotely like it.

Not sure I will get to the car again for another couple of weeks now, as I work all week, have friends coming round next weekend and then a full week of work and on-call the week/weekend after (aaarrrgghh).

Still ....could be worse, it could be the summer!

Catch up again soon

Andy

[MisterTee]

Many thanks Penelope - that is more helpful, actually.

I had been looking for this type of connector, as this is exactly the type fitted to the main loom. I was led to believe that it wasn’t a proper Ford or TVR fit connector which is what made me start my search for a male connector for the above. Below is a picture of the connector on my main ECU loom, which looks to be the same as the ones you have found.

Andy

Edited by MisterTee on Monday 27th January 21:48

[MisterTee]

Placed an order - hopefully they will be here by the weekend. Thanks again for your help!

Andy

[MisterTee]

So, armed with another loom and the right connectors (thanks Penelope), I’m about to start the process of changing the connector over on the loom to match that on the car.

What might be a really silly question (but this is a TVR, so maybe not); Are the wires colour matched like-for-like either side of the connector?

The reason I ask is that the pattern of the connector on the loom



Does not match the pattern of the connector on the main harness




Many thanks

Andy

[MisterTee]

It’s a second-hand injector loom. The original loom, which worked absolutely perfectly but was scruffy with various hacks and bodges was ‘rebuilt’ and the car has never ran properly since. I suspect the rebuilt loom is dodgy, but I am trying to rule that out.

I’ve got another loom but it has a different connector and so want to swap it over.