C30 Engine : - 2.0L Petrol - struggling/loss of power

GusGecko · Mar 7th, 2013, 15:26

I asked the question on the C30 forum a while ago but had no response...

When cruising or driving at a constant speed, the car feels like it dip's in power/struggles for a very brief moment so the ride sometimes feels lumpy..
It also happens sometimes when pulling through the rev range..

The way it FEELS is as though the brakes are being dabbed. Not bad fuel, always serviced by Volvo, 76k miles, changed sparks, cleaned air filter, checked brakes, no warning lights...I've mentioned it before at a service but they couldn't find anything nor replicate the problem...they say

Any ideas?!

GusGecko · Mar 7th, 2013, 16:02

I've just disconnected the battery, will leave for 30mins for ecu to reset as such, maybe that might help

Dtp · Mar 7th, 2013, 18:00

Fuel filter?

GusGecko · Mar 7th, 2013, 18:08

Quote:

Originally Posted by Dtp

Fuel filter?

Good shout...Do you know when/how many miles that's changed at? It must have been changed at least twice already right?

SonyVaio · Mar 7th, 2013, 18:23

What your describing sounds like the car is hesitating/stuttering?? Is this the case?

I'm thinking that is sounds like a coil pack may be faulty.

GusGecko · Mar 7th, 2013, 18:40

One of these? Hopefully not all of them... Is it a known problem or a likely problem at 76k miles?

GusGecko · Mar 7th, 2013, 18:43

Quote:

Originally Posted by SonyVaio

What your describing sounds like the car is hesitating/stuttering?? Is this the case?

I'm thinking that is sounds like a coil pack may be faulty.

But yes that's what it feels like

SonyVaio · Mar 7th, 2013, 19:19

Yes, that's them. I have not heard of them being a common failure on Volvo's but certainly on other marques they are a very common problem (Audi TT).

Of course as a pure keyboard diagnostic I couldn't be certain but it sounds like it is electrical and the coil pack is the next likely thing on the list as you say you have changed the plugs already?? Did you ensure the gap is correct on the plugs?

If it is a coil pack then chances are it is just one, is there any error codes stored?

GusGecko · Mar 7th, 2013, 19:40

Plugs changed a good few k miles ago but decent iridium plugs.

Taking it to my buddies garage tomorrow to plug it into their diagnostic equipment, will report back with any codes..if any. We'll check spark plug gap etc also.

Daim · Mar 8th, 2013, 05:10

Coil packs are wear and tear items. The fuelfilter is service free means it doesn't need to be changed. I'd look at the coil packs too. After 80-100k miles they are quite worn.

Mar 7th, 2013, 15:26	#1
GusGecko from C30 to XC60 Last Online: Aug 28th, 2023 07:55 Join Date: Jul 2012 Location: Braintree, Essex	2.0L Petrol - struggling/loss of power I asked the question on the C30 forum a while ago but had no response... When cruising or driving at a constant speed, the car feels like it dip's in power/struggles for a very brief moment so the ride sometimes feels lumpy.. It also happens sometimes when pulling through the rev range.. The way it FEELS is as though the brakes are being dabbed. Not bad fuel, always serviced by Volvo, 76k miles, changed sparks, cleaned air filter, checked brakes, no warning lights...I've mentioned it before at a service but they couldn't find anything nor replicate the problem...they say Any ideas?! __________________ XC60 D5 SE LUX NAV with toys 'n' stuff

Mar 7th, 2013, 16:02	#2
GusGecko from C30 to XC60 Last Online: Aug 28th, 2023 07:55 Join Date: Jul 2012 Location: Braintree, Essex	I've just disconnected the battery, will leave for 30mins for ecu to reset as such, maybe that might help __________________ XC60 D5 SE LUX NAV with toys 'n' stuff

Mar 7th, 2013, 19:40	#9
GusGecko from C30 to XC60 Last Online: Aug 28th, 2023 07:55 Join Date: Jul 2012 Location: Braintree, Essex	Plugs changed a good few k miles ago but decent iridium plugs. Taking it to my buddies garage tomorrow to plug it into their diagnostic equipment, will report back with any codes..if any. We'll check spark plug gap etc also. __________________ XC60 D5 SE LUX NAV with toys 'n' stuff

Mar 8th, 2013, 05:10	#10
Daim Brit in Germany Last Online: Yesterday 19:48 Join Date: Jan 2011 Location: Bremen	Coil packs are wear and tear items. The fuelfilter is service free means it doesn't need to be changed. I'd look at the coil packs too. After 80-100k miles they are quite worn. __________________ The Best Nation Is Imagination 2010 V70 (Type 135) D5 (D5244T10) Automatic (TF-80SC)

Mar 7th, 2013, 18:00	#3
Dtp Member Last Online: Apr 5th, 2015 19:49 Join Date: Apr 2012 Location: Malvern	Fuel filter?

Mar 7th, 2013, 18:23	#5
SonyVaio VOC Member Last Online: Feb 26th, 2016 19:58 Join Date: Aug 2011 Location: Exmouth	What your describing sounds like the car is hesitating/stuttering?? Is this the case? I'm thinking that is sounds like a coil pack may be faulty.

Mar 7th, 2013, 19:19	#8
SonyVaio VOC Member Last Online: Feb 26th, 2016 19:58 Join Date: Aug 2011 Location: Exmouth	Yes, that's them. I have not heard of them being a common failure on Volvo's but certainly on other marques they are a very common problem (Audi TT). Of course as a pure keyboard diagnostic I couldn't be certain but it sounds like it is electrical and the coil pack is the next likely thing on the list as you say you have changed the plugs already?? Did you ensure the gap is correct on the plugs? If it is a coil pack then chances are it is just one, is there any error codes stored?

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