volvo 480-starting and running problems.

Hi. One thing that may be worth checking is the connector wiring on the air mass meter. I had similar probs recently & a garage chappy took about 5 minutes to find the snag. Had been driving me crazy for weeks! The connector had corroded. A nice shiny new one solved it. Hopefully it won't be the sensor itself as they are expensive........ Is the car a turbo? If yes, there is a computor module pop riveted onto the bracket that holds the coil in place. I have been advised (on this forum) that this module can course similar syptoms & to change it if the problem starts again on mine. If you do change it make sure you get one from a turbo model. If yours is not a turbo ignore this paragraph! Good Luck

volvo turbo vacuum problem 

hi i have done a conversion in my 16v valver and put the volvo 480 engine in all running. it will start up and you can rev it really slow and it will rev right through. as soon as you put ur foot down fast or hard it will seem as if it wants to die and its going burrrrrrrgggh.i have checked all boost pipes as i have front mount. also when i unplug sensors such as idle control and air flow its the same problem. when i remove the idle control itself it will rev hard all the way through without reving it any ideas:thumbs_up:

If I understand correctly, you're saying it revs fine when the Idle Control Valve is dis-connected? Maybe the valve needs a good clean? Good Luck:thumbs_up: Clean up the connectors on the valve too.