Subaru Forester Owners Forum banner

1 - 9 of 9 Posts

·
Registered
2004 FXT 5MT
Joined
·
367 Posts
Discussion Starter #1 (Edited)
Engine Running Rough / Engine Vibration ?

I have an 04 FXT
No mods other than an STi Uppipe.
The engine is and has been running rough/choppy in lower rpm range
and quite possible in the higher rpm range.
It vibrates the car and i can feel it in the seat.
The frequency seems to remain constant at constant rpms.
However, the magnitude varies.
Feels like it has the shivers
This was occurring before the uppipe install as well.

What are the first things to check?
Plugs
Fuel Filter
Front O2/Air-Fuel Sensor
etc ???

Thanks in advance
-josh
 

·
Registered
2000 Forester L NA auto
Joined
·
576 Posts
Have you checked your fuel tank for water? Fuel filter for a clog? Any codes? Have you checked your catalytic converter?
 

·
Registered
2004 FXT 5MT
Joined
·
367 Posts
Discussion Starter #8
Stock catted uppipe was was replaced with sti catless uppipe recently. The problem was occuring before this. Before catless uppipe install, CEL 0546 was occurring on interstate at at steady mid-high rpms. No CELs after STI uppipe install and resistor mod. I dont think there any water in the fuel tank but i will check for any cracks in tank and fill tube. I haven't checked the cat on the downpipe. I will try to find time to clean the MAF sensor and check the fuel filter tomorrow....
 

·
Registered
2004 FXT 5MT
Joined
·
367 Posts
Discussion Starter #9
im surprised no one has suggested seafoam.
i did it today and it is slightly better.
working on the fuel filter tommorow and plugs later in the week
 
1 - 9 of 9 Posts
Top