misfiring v50 t5 2007

marko2007 · Post by **marko2007** » 04 Oct 2009, 18:49

changed coils and sparkplugs with volvo parts still misfiring/?

Post by **OEMVolvoParts** » 05 Oct 2009, 10:02

If you have any Info at all that would help. Check engine light? Mileage? Conditions of mis-fire, under load, at idle?

Honestly we NEVER sell coils for your car, they just dont go bad, at least not yet. Maybe in a few years they will start to act up, but overall for that model, they dont go bad. More info and I can try to point you in the right direction, but either way, you may need to get the mis-fire code checked in order to fix it right the first time.

marko2007 · Post by **marko2007** » 06 Oct 2009, 05:31

OK, here it goes,2007 v50 t5 with 60k . the codes are 300, 303 304 . the misfiring happens in the morning the first time I start the car when it is cold. Starts iding ruff the clears up the throws the codes. This happens every morning. I then recent codes and it is ok until it sit all day it will then throw another misfire code. It is always the same codes 300,303,304 check engine light on. No one can figure this out not even the dealer. Any ideas??

Post by **OEMVolvoParts** » 06 Oct 2009, 13:10

Im assuming that after the car warms up, or gets going it stop mis-firing? So only at idle, and only when its cold, but once it gets going its fine?

I have to ask, did you use factory parts for your car? You said you changed out the plugs and coils, that is alot of money worth of parts to throw at it, especially since it did not fix it. I cannot translate generic codes, Im guessing they are multiple mis-fire codes for multiple cylinders. Maybe there are more codes?

It could be any number of things, although the dealer, or anyone with VIDA should be able to narrow it down. The VIDA system needs to be hooked up with all the codes present, dont clear the codes and then go to the dealer. That is a waste, you need to give it a chance to set all codes present. At that point, you would at least know where to start, assuming there are more than just mis-fire codes.

marko2007 · Post by **marko2007** » 06 Oct 2009, 16:26

Yes I used factory parts. The codes are for 1 general misfiring. 2 misfiring on coil #3. And #3 misfiring coil #4. What is VIDA?? Could this be a going bad fuel filter, or a bad sencer??

Post by **OEMVolvoParts** » 07 Oct 2009, 13:08

VIDA stands for Vehicle Information & Diagnostics for Aftersales.

It can check the function of all components in real time while hooked up to the car. You really need to take the car to a qualified shop that has VIDA and let them diagnose the car, if they cant figure it out, take it somewhere else. Especially considering you have already changed the plugs and coils, it should not be difficult to diagnose.

After they tell you for sure re-post here!

marko2007 · Post by **marko2007** » 07 Oct 2009, 20:08

Thanks I will let you know