Saab 9 3 2.8 Turbo slight misfire

[El Del]

Hi everyone new here but have been looking on here for while now as a guest.

Anyway to my problem I have a 2006 '06' Saab 9 3 Aero 2.8 Turbo. It judders very slightly whilst idleing, it also had a miss earlier today not bad revved it up and it cleared then had a good thrashing after but still have the slight judder on idle, I will add it's fine when driving and it's under powered at all. Any Ideas what the issue could be? Have read somwhere that it's the plugs, checked everything out headgasket wise (well no cream anywhere anyways) but would expect that on a 2006 car. Car has 72k miles and had a major service with Saab a 70k in may this year.

It's the same engine as used in the Vectra VXR's so any ideas? Thanks

[fastcars_hardy]

Thats a hard one mate. does the engine light flash or anything. apart from a few things like plugs and coil packs then i dont no off the top of my head. when i get to work i will have a look for u.

[NST]

HI

coil packs if its misfire at idle.

i had a misfire at part/wot which was plugs. iirc the coil packs aren't cheap. if your car modified?

VXR also has the same issue. check out www.vxronline.co.uk

cheers

NST

[fastcars_hardy]

Hey. I just asked about and there was a software update from them so it might be worth getting that done.

[fastcars_hardy]

It could be a coil pack but just so u know at the place I work at we have not done many if any at all. I would also try cleaning the throttle out and when the software is done the throttle is re learned cos it sounds like your car is idleing low hope this helps.

[El Del]

Car isn't idleing low, sounds like the software update diagnosis was spot on though thanks mate

[NST]

thats interesting.. i had a software update as well, which helped for about 2-3 weeks then the misfire came back..

hopefully it is all sorted!

[El Del]

How did you cure the problem mate??

[NST]

new plugs

the new cooler type that are fitted to the vectra. shall i dig out the details?

[El Del]

Hi mate, would be very grateful if you could. Also I notice as I have a Vauxhall trade card that the plugs in ther are about £37. Are these the ones I need?

Sorry for the late reply been busy with work.

[ylee coyote]

my turbox has been doing this too

changed the plugs helped but the dealer thinks it will come back so he is going to change the coil packs (he admits there has been issues.....)

[El Del]

Just noticed my first post said it's underpowered at all. That was meant to say it's not underpowered at all, drives lovely and has HUGE amounts of power. Anyway as to coil packs bloke I know said Saab replaced his 3 times and then found it to be just the plugs.

[NST]

El Del said:

Hi mate, would be very grateful if you could. Also I notice as I have a Vauxhall trade card that the plugs in ther are about £37. Are these the ones I need?

Sorry for the late reply been busy with work.

the part number is 10 55564748
i've not had any problems in the last 5K or so with the new plugs.

good luck!

Edited by NST on Thursday 26th November 11:18

[El Del]

Thanks for that mate, lets hope it's them.

Thanks again