Question about 2005 Volvo S40

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2005 Volvo S40 T5 is losing power while driving then suddenly regaining power. This happens over and over again.

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    DOODYDOODYDO May 11, 2010

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Had this problem as well.. check the oxygen sensor on it (sometimes critters like that wire) or like shel said dirty injectors or filters could be it.. bad gas is also another one... dont go to places with old tanks or that is really cheap, run at least 91

Posted on Jan 19, 2010

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We have also had this occur. Low oil, overdue oil change, dirty oil filter and dirty air filter, dirty fuel filter has appeared to be the problems. So possibly a bad plug could cause this, or dirty injector.

Posted on Dec 28, 2009

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1 Answer

I have a 2005 Volvo S40 T5. Bosch diagnostic error codes 290C, 280B, 2900, 290B & 280C, fuel pressure sensor related. No loss of power or misfire, car goes nicely. Should a part be repalced? Thanks!


Not a mechanic, but do you know what the codes mean?? May be nothing to worry about may just need resetting or a minor error accursed and righted itself and just letting you know it has happened unless you know meaning of codes ask your garage or look on line may get some help,advise or better options.

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martysgarage.info/2009/12/volvo-s40-obd-ii-codes/

Jul 02, 2014 | 2005 Volvo S40

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2005 Volvo S40 shakes when accelerating


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Jan 14, 2013 | 2005 Volvo S40 T5

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My volvo s40 t5 2005 is suddenly losing power as if running out of petrol, then power kicks in again. computers at volvo pick nothing up..scary..as i never know when it is going to happen.


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1 Answer

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Looks like you need to check your altenator,I hope this helps you and I want you to have a merry xmas,

Dec 24, 2009 | 2005 Volvo S40

1 Answer

Purchased a used 2005 S40 2.4i,how do I know if it has a turbo?


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2 Answers

2005 volvo s40 t5 how to reset oil light


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