Ok I have done some searching...but still having a issue with the T5.<p>Have no upgrades or mods to the engine. Stock exhause, 2004.5 Volvo S40 T5.<p>Car started running ruff a few months ago. Pulled in garage replaced everything from plugs to oil, and cleaned all the sensors.<p>What its doing is it runs fine, then all of a sudden it losses power. Most times it does not die, however last week it died after about 40miles of driving (its St. Louis so its hot and humid) car sat for 20-25min then started up. Next day same thing. Since then it has not happened again, however it will loose power, floor it and after a few seconds power is back and Im going.<p>Yesterday was sitting at buddies house in park and car started running ruff. Gave it a little gas, backfired, then ran normal again. <p>I know there was a recall on the PEM so I did take it in a few weeks ago to get it replaced. But I dont think that is my issue. No Check engine light.<p>So let me hear your ideas! Local Volvo Dealer is 58 miles from my house...so its a last resort for me. And the car has 72,000 miles on it.