Crysler voyager -95 3.3l Backfiring in aircleaner

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
rpm. It starts to missfire slightly and if i press the gas even more
it will backfire so much that i even blown a aircleaner top off. This
happens almost everyday but sometimes it will run perfektly. I´ve
changed wires and plugs whith no change.
There is no error code in the "check engine lamp" only 55.

Is there someone that can help me, i´m going crazy over this.
I´ve read a lot about mis/backfiring here, but nobody seems to have
exactly the same problem as me. meaning at a specific rpm regardless
of load/uphill/downhill/decelerating/in-gear and so on.

Help please!!!!!!!!

Janne

timing ???


"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
> rpm. It starts to missfire slightly and if i press the gas even more
> it will backfire so much that i even blown a aircleaner top off. This
> happens almost everyday but sometimes it will run perfektly. I´ve
> changed wires and plugs whith no change.
> There is no error code in the "check engine lamp" only 55.
>
> Is there someone that can help me, i´m going crazy over this.
> I´ve read a lot about mis/backfiring here, but nobody seems to have
> exactly the same problem as me. meaning at a specific rpm regardless
> of load/uphill/downhill/decelerating/in-gear and so on.
>
> Help please!!!!!!!!
>
> Janne

timing ???


"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
> rpm. It starts to missfire slightly and if i press the gas even more
> it will backfire so much that i even blown a aircleaner top off. This
> happens almost everyday but sometimes it will run perfektly. I´ve
> changed wires and plugs whith no change.
> There is no error code in the "check engine lamp" only 55.
>
> Is there someone that can help me, i´m going crazy over this.
> I´ve read a lot about mis/backfiring here, but nobody seems to have
> exactly the same problem as me. meaning at a specific rpm regardless
> of load/uphill/downhill/decelerating/in-gear and so on.
>
> Help please!!!!!!!!
>
> Janne

spark and fuel pressure is not monitored by the pcm to set a fault code, you
may have very well damaged the coil. especially if you kept driving it with
this problem
"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
> rpm. It starts to missfire slightly and if i press the gas even more
> it will backfire so much that i even blown a aircleaner top off. This
> happens almost everyday but sometimes it will run perfektly. I´ve
> changed wires and plugs whith no change.
> There is no error code in the "check engine lamp" only 55.
>
> Is there someone that can help me, i´m going crazy over this.
> I´ve read a lot about mis/backfiring here, but nobody seems to have
> exactly the same problem as me. meaning at a specific rpm regardless
> of load/uphill/downhill/decelerating/in-gear and so on.
>
> Help please!!!!!!!!
>
> Janne

spark and fuel pressure is not monitored by the pcm to set a fault code, you
may have very well damaged the coil. especially if you kept driving it with
this problem
"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
> rpm. It starts to missfire slightly and if i press the gas even more
> it will backfire so much that i even blown a aircleaner top off. This
> happens almost everyday but sometimes it will run perfektly. I´ve
> changed wires and plugs whith no change.
> There is no error code in the "check engine lamp" only 55.
>
> Is there someone that can help me, i´m going crazy over this.
> I´ve read a lot about mis/backfiring here, but nobody seems to have
> exactly the same problem as me. meaning at a specific rpm regardless
> of load/uphill/downhill/decelerating/in-gear and so on.
>
> Help please!!!!!!!!
>
> Janne

I"d do a coil pack, wires, and plugs.
Larry
"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
> rpm. It starts to missfire slightly and if i press the gas even more
> it will backfire so much that i even blown a aircleaner top off. This
> happens almost everyday but sometimes it will run perfektly. I´ve
> changed wires and plugs whith no change.
> There is no error code in the "check engine lamp" only 55.
>
> Is there someone that can help me, i´m going crazy over this.
> I´ve read a lot about mis/backfiring here, but nobody seems to have
> exactly the same problem as me. meaning at a specific rpm regardless
> of load/uphill/downhill/decelerating/in-gear and so on.
>
> Help please!!!!!!!!
>
> Janne

I"d do a coil pack, wires, and plugs.
Larry
"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
> rpm. It starts to missfire slightly and if i press the gas even more
> it will backfire so much that i even blown a aircleaner top off. This
> happens almost everyday but sometimes it will run perfektly. I´ve
> changed wires and plugs whith no change.
> There is no error code in the "check engine lamp" only 55.
>
> Is there someone that can help me, i´m going crazy over this.
> I´ve read a lot about mis/backfiring here, but nobody seems to have
> exactly the same problem as me. meaning at a specific rpm regardless
> of load/uphill/downhill/decelerating/in-gear and so on.
>
> Help please!!!!!!!!
>
> Janne

"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

"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

EGR valve will not cause this stuck open or closed
"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
>
>