Ha Got it!!! Strange nobody offered even a single suggestion. In that , I am very dissappointed in this site. 3 Months this post has been here and nobody!!! But I found the problem without your help. Thanks for nothing!!

Turns out its not the computer either. Put a reprogrammed computer in it and still the same thing. Out of clues and out of hair.

nobody? really?

P.S. This only seems to misfire at idle. Runs like a top with acceleration.

2003 Volvo s-80 2.9 non turbo. Cylinder 4 misfire. New coil pack, new plug, swapped injectors with good inector, checked injector signal, tested compression and is 150 just like all other 5 cylinders. Cleaned out Varible valve timing solenoid. Checked for bad insulation around coil wires. Still have...

Thanks for lack of responses. Maybe I should of asked something stupid like ; how do you put air in the tires on an XC90 to actually garner an attempt at a helpful or any response!!

My 2004 XC90 which is the T6 model has 130k on it. When I got it , it was just sometimes difficult to start. It would crank and crank but not fully turn over. When it does start, maybe 3 or 4 times in a row with no problem and then back to difficult a message saying "reduced Engine Performance&...