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Old October 17th 04, 09:31 PM
Janne S Sweden
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Yes we have pretty hard emission checks here in Sweden, almost like in
California i think. We check the car and emissions every year.
I thougt that it may be the lamda some time ago, but the emissions was
perfekt in the test.


"Ted Mittelstaedt" > wrote in message >...
> "Janne S Sweden" > wrote in message
> om...
> > My Voyager is backfiring in the aircleaner at 3700-4000 rpm when i
> > drive it and if the gearbox is in park and i rev it up to the above

>
> Does your state have an emissions check? An EGR valve stuck closed
> might cause this, and if your car has high NoX emissions that's the EGR.
> Sometimes when this valve fails it won't set a code.
>
> Did someone replace the plugs with a set that have the wrong heat
> range?
>
> Ted

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