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Engine Vibration '99 Outback
Posted 18 October 2004 - 10:30 AM
Posted 18 October 2004 - 12:14 PM
Could be a few things. Starting with your question - no, these engines run very smooth. At idle there may be a bit of vibration, at least with an automatic in Drive. The flat-4 is a pretty balanced design, intrinsically so unless there's mechanical damage inside caused by a bent valve, it's an external problem.
Check the engine/tranny mounts, they may be worn. Next, check that all spark plugs are fully tight (I've had them loosen on me, causing a slight roughness).
If there are any doubts about the valves, run a compression check to be sure.
Lastly, check the alignment of the timing belt. You don't mention whether it was replaced uring the 60k maintenance but if it's off by a tooth or two, it'll happily shake.
Posted 18 October 2004 - 12:49 PM
Is the vibration constant? Front driveshafts have been known to be out of balance.
What about wheels? Are they balanced? All five lug nuts torqued evenly (95-100Nm)?
Posted 18 October 2004 - 02:28 PM
The vibration is mostly on Idle or going slow. It is not so bad at speed so I dont think its the tires. I'm under the impression something is out of balance, or out of round or else its with the timing of the engine. I've only done simple maintenence on this car and dont know much about it. Is the timing something I can fix pretty easily or is it worth spending the cash for a shop to check out? What might it cost for a timing belt change?
Posted 18 October 2004 - 02:33 PM
Could your cats be clogged? My Subie got the shakes at 2500-2000 rpm when I was slowing down, which went away when I got new cats. I didn't anticipate that so it was a nice plus.
Posted 25 October 2004 - 10:20 PM
Is it only at idle? Does it get worse if the lights and/or A/C are on?
I know mine isn't the timing belt.. checked and double checked. Wires and plugs replaced and still a vibration. It's smooth once you get going.. but at a stop it feels like it's missing a cylinder.. yours?
Here are my guesses:
- Cat or O2 sensors
- possible adjustment of IAC or TPS (search the board)
- vacuum leak (try some carb cleaner around the intake)
- I'm even thinking mine is the torque converter???
- dirty injectors
Posted 03 November 2004 - 07:46 PM
Is this usual?
Posted 03 November 2004 - 07:47 PM
Posted 03 November 2004 - 09:54 PM
Posted 30 January 2006 - 02:08 AM
Posted 30 January 2006 - 12:42 PM
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