DB9 Ignition coil packs, 2 or 3 Pin??

[paulrog1]

Hi, I'm getting some parts together to replace the spark plugs&coil packs on my 2005 DB9 (registered in August) My question is although no one can tell me 100% for sure do you think my car has 2 pin or 3 pin ignition coils?? Thanks.
Paul.

[paulrog1]

That's great info, thanks very much.

[paulrog1]

Ken Figenus said:

If there is any DIY job for the patient that will save a good few bob this is the one (plus plugs). Are you getting the OE source Denso coils or AM branded ones?

Hi Ken, You are exactly right, I'm trying to get 12 ignition coils on the cheap, I've got the 12 NGK sparkplugs for £50 and there's not much I can do about the £200 inlet manifold gaskets.

I have been in contact with Denso & BERU as these 2 companies seem to be the OEM manufactures, the 2 companies don't supply to direct to me, but BERU directed me to 2 UK suppliers, the first one doesn't stock it? the second directed me to another engine parts supplier who then quoted me £60 each!!

I would love to get hold of these cheaper, I feel like the 2 companies are ensuring I have no choice to go to an Aston Martin supplier, the cheapest I found was £55 each, including VAT.

I know I own an Aston Martin, I get the servicing done by a good independent to get a stamp in the book every year, but I'm happy to do the more complicated jobs as I'm an engineer myself, not vehicle trained but still very competent and able. But getting back to the cost I don't mind paying £55 each for the coils but I know at least one forum member received all 12 plus postage for £120 so I feel like I'm getting ripped off.

If anyone knows how to get these bloody coils cheaper please let me know!!

[paulrog1]

Just posted online at 6 speed online and looked on Alibaba, a supplier is selling the 3 pin ones for $10 each, but I don't think they are Denso branded so not sure what your getting! can't find the 2 pin type.
I've also contacted some US suppliers of Denso products, maybe they can supply them.
Fingers crossed.

[paulrog1]

Yes, am familiar with that blog, very good information and yes waiting for his info on replacing his coils & sparkplugs, I think the first installment is coming out on Friday.

I have contacted him to ask if he did find cheaper coils but he has installed AM one's.

[paulrog1]

Right, some really interesting info.
Delphi DG-528 are the same coil as the AM 4G4E-12A366-AA 2-pin coil, you just need to reuse the rubber boots.
A forum member of 6speed online has said of the Delphi coil -

"After researching some more, the 2 pin DG-528 is the AM coil, just with a different boot. I took a coil CARAIBAM provided (thanks again) and a Delphi DG-528 equivilent to a friends shop and had him test both, the OHM'd the same and put out almost the same voltage (the one CARAIBAM provided was used). I am planning to replace mine once I get my car back from the body shop with the Delphi's"

So having a look on this US website which ships to the UK -

http://www.rockauto.com/en/catalog/lincoln,2002,ls...

The DG-528 is £27.04 total with shipping is £353.18, saving of £317 if purchasing the AM coils.

So at last some good news.

Edited by paulrog1 on Thursday 21st July 17:54

Edited by paulrog1 on Thursday 21st July 18:23

[paulrog1]

OK, i've been looking more into this today.

The forum member from 6 speed online, randyb, told me the Delphi ignition coils (part no - GN10379) are working ok and fit in his 2005 DB9 (2-pin), and looking at a link he posted where he purchased them from in the US called RockAuto.com, the coils are from a Lincoln LS 3.0 V6. The coils from RockAuto.com cost £375 (£400 for the Denso one's) delivered to the UK, plus another £100 for customs so around £500 in total, that's only £170 less than the genuine AM one's are.

So even though I can spend £670 on coils, but i'd rather not, I looked to see if I can get them cheaper.

I looked on Wikipedia and the engine which the Lincoln LS 3.0 V6 uses is the Jaguar AJ-V6 (AJ30) which is a speacialised version of the Ford duratec V6, this engine was used in the Jag X type and S type, as these cars are popular in the UK I looked on eurocar parts and I found Haas coils for sale for £26.99 and I can collect from a local store. i've looked online and they look identical except for the boot.

So what I might do is order one from eurocar parts and compare it with a genuine AM coil, so does anyone have an old genuine AM coil they don't need anymore????

Please let me know if anyone has one and i'll pay for postage.

Thanks.

Edited by paulrog1 on Friday 22 July 18:28

[paulrog1]

Yeah, thanks for that, I think i'll wait until eurocar parts have one of there 30% flash sales.

BTW, does anyone have an old ignition coil they don't need? (please read above)

Thanks.

[paulrog1]

The biggest problem would be the 2 pin plugs on the wiring harness would not fit onto 3-pin ignition coils, you would have to fit 3-pin plugs, then connect 12 earth cables.

This would stop most people fitting 3 pin coils to a 2-pin coil car IMO.

But thanks for the idea, I always like to hear "out of the box" ideas, these are sometimes the best.

[paulrog1]

Update -

For anyone who is doing this job I have some further info.

The ignition coil packs from eurocar parts are identical to the 2-pin DB9 ones (Thanks Mcgurk for sending me a used coil) they are from a 2002 Jag S-type 3.0L, all you need to do is to reuse the rubber boot & spring, link -

http://www.eurocarparts.com/ecp/c/Jaguar_S+Type_3....

They retail for £27 but almost every week they have a 30% off sale so I got all my 12 coils for £240.

The PCV valves, thanks to Steve from the Aston Martin DB9 1936 blog gave me a link to Amazon (US) for 2 sets, they are Motorcraft Ford parts EV-152D, link -

https://www.amazon.com/Motorcraft-EV152D-Positive-...

The total cost for them are £27 including shipping and taxes.

So my total parts spend for this job is -

12 NGK sparkplugs - £50
Genuine AM inlet manifold gaskets - £200
12 Ignition coil packs £240
2 Genuine AM Throttle body rubber O-rings £6.50
Complete set of O-rings for the fuel injectors £40 (from Mr injector uk)
2 sets of PCV Valves (Motorcraft Ford) £28.

Total is £564.50, I'm going to do this job next month, If all these parts were brought from AM they would cost £1150 so roughly a saving of £600.

Edited by paulrog1 on Friday 5th August 08:35

[paulrog1]

A quick update, anyone who's after cheap fuel injector seals for a DB9 buy 3 packs of these -

http://mrinjectoruk.co.uk/Fuel-injector-service-ki...

I've been assured these seals are the same, all in £30, the AM seals are around £75 delivered so saving of £45.

[paulrog1]

TGearDavid said:

Hi Paul,

"The ignition coil packs from eurocar parts are identical to the 2-pin DB9 ones "

How sure are you that these are the same ? I read that you've checked visually by comparing online with the 4G43-12A366-AA AM part but couldn't the Ohm'age be different between them ?

Also you refer to the rubber boot and spring needing swapping, would you mind elaborating on which bit this is please ? I've not actually physically seen one (only the pics on the web) and they all look plastic to me.

Thanks for your efforts with this task and for documenting it - I too am about to embark on the 12 x coil change and don't like being ripped off at £64+vat for a part that possibly/maybe/hopefully your research has shown can be done with a £22 part.

Cheers

David

Hi David,

I'm a couple of weeks off doing the ignition coil replacement job so at the moment this is what I know -

The 2-pin coils from eurocar parts look identical to the 2-pin AM coils (McGurk sent me an AM old coil) all you need to do is reuse your old rubber boot and spring, the rubber boot is where the sparkplug goes and the spring connects from the coil to the sparkplug.
I have not measured the resistance of the coils as I don't have a healthy AM coil to base my measurement, but what I've found out is -
The forum member in the US on the 6 speed online forum, randyb, has fitted in his 2005 DB9 Delphi ignition coils which fit on a 2002 Lincoln LS 3.0 V6, the SAME engine goes in a Jaguar S-type (AJ-30) 3.0 V6, hence the coils from euro car parts.
The Delphi ignition coils which randyb has installed are part no - GN10379 they have a few equivalent OEM part numbers and C2S42751 is one, that number is the Jag coil in eurocar parts.

http://www.rockauto.com/en/moreinfo.php?pk=5735958...

I hope this helps, I will let you all know in a couple of weeks if all this is correct.

Edited by paulrog1 on Sunday 21st August 13:00

[paulrog1]

Hi David,

Yes the job was completed this week, I had to get an OBDII reader to clear the fault codes as the engine ran like crap afterwards but now the engine runs great with no problems or fault codes.

Went out for a long drive today and the engine runs very smooth.

So the Jag S-type 3.0 2003 (or 2004) ignition 2-pin coils are the same you just need to reuse the rubber boot and spring, I installed the NGK ones instead of the HAAS coils as I thought they were manufactured better, (personal choice really).

The motorcraft PVC valves which I purchased from Amazon in the US are exactly the same as the AM ones.

Hope this helps

Paul.

Edited by paulrog1 on Friday 9th September 17:54

[paulrog1]

Hi, yes those are the one's. If you use VIP30 today you'll get 30% off.

Yes you will need to do the rundwn procedure as the battery will need to be disconnected, you will also need to do the windows and seats.

Any problems send me a message.

Regards

Paul.

[paulrog1]

The 3-pin coil packs are very costly, it would be good to find a cheap replacement for the 3-pin types.

If you do find a good alternative please post it in my sticky called Aston Martin Alternative Parts.

[paulrog1]

Hi Lee, I think your car will most likely have 3-pin coils.

As my car has 2-pin coils i can get NGK for £12 each now but unfortunately I don't know where you can get cheap 3-pin coils from if at all.

[paulrog1]

I would contact Mike at Bamford Rose, he was at AM and was involved in the development of the V12V, he'll know if there are any cheap alternative sparkplugs for your car.