DB9 Plugs & Coils

[camel_landy]

I've taken the DB9 out of hibernation and on its first run out I was getting that slightly irregular and lumpy idle. The Welsh 20mph probably didn't help, so I'm hopefully going to get it on the motorway later but I suspect going to be time to change the plugs and coils.

Steve's guides (aston1936.com) are very detailed but I've got a couple of question:

1 - Are the genuine coil packs still the recommendation or is there a high quality OE alternative? (I've had to deal with 'cheap' coil packs on other cars, so not interested in it being cheap for the sake of it.)
2 - Are there any recommendations for workshops in Sth Wales? (Much as I'd like to crack on with it myself, the timing isn't great.)

M

[Dan1heMan]

I replaced the coil packs on my DB9 last year and they seem to be working fine. Mine took the 2 pin coils.

Purchased them off Autodoc, they where almost 75% cheaper than the 'Aston' alternative.

[camel_landy]

Interesting... Thanks.

Amused to see what looks like a deliberate "ERMANY" misprint, so not sure if I need to take "Manufactured for Borg Warner" with a pinch of salt too.

M

[paulrog1]

I would firstly put some fresh petrol in and go for a good run.

When were the plugs and coils last replaced?

I would take the car to a garage with AMDS, check the misfire rate.

Only the very early DB9 cars had the 2 pin coils after that 3 pin. I'm not aware of cheaper 3 pin coils but there are cheaper NGK plugs.

Edited by paulrog1 on Wednesday 4th March 12:23

[camel_landy]

New fuel done and just back from a run. It's better but Cyl5 is still reporting a misfire, requiring the clearing of a code.

Mine's a 2006 car, which sounds as though it's in the middle of the changeover period from 2x pin to 3x.

M