Having misfires, engine idles rough. Checked the spark plugs, injectors and coil packs and they are all good, is it the idle air control?
2009 subaru Impreza WRX
- thebax2006Lv 76 months agoFavorite Answer
You should have started with replacing the spark plugs and wires.
What's the fuel pressure/
if this started after filling your gas tank take a gas sample in glass jar and let it sit for a half hour to see if water separates from the gasoline.
If all that gets done check the timing marks to make sure the timing belt didn't jump time.Source(s): Mitsubishi Master Tech
- RonLv 76 months ago
You don't have all of that without the check engine light flashing. You checked the plugs and coils meaning you ran diagnostic tests on them
- .Lv 76 months ago
Get a code reading at an auto parts store. Modern cars have numerous sensors that (when bad) can cause that problem.