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98 Legacy Outback- hard start and rough idle
Posted 19 July 2010 - 12:43 PM
1998 Legacy Outback, 187,000 miles total; 60K on a CCR engine.
Car has been throwing P0303, P0304 codes for years. I gave up trying to fix this problem, never seemed to be a real problem anyway. (Cylinder 3 and 4 misfire)
For the past 6 months I've been getting a P0440 code (evap system). Need to fix, just haven't gotten around to it.
The problem I am having now started about 3 months ago. On occasion, usually when the car is cold, but not always, it won't start on first key turn. Sounds like it's about to catch but doesn't. Then I turn key again, and it cranks and cranks but won't start unless I press accelerator to the floor. It eventually starts then.
Also on occasion, right after starting, the idle can be very irregular. Races up to 3,000, dives down to 700, goes back up to 2,000, etc. After the car gets warmed up (a few minutes) idle settles down to 800 or so and stays there.
Could the evap system problem be causing the starting and idling problems? If not, any ideas on what might be the source or how I might track down the culprit?
Posted 19 July 2010 - 10:34 PM
These are also known for the Idle air control motor getting gummed up and causing idle trouble. But I think I'd try the ECT first.
Posted 25 July 2010 - 01:04 PM
Posted 25 July 2010 - 02:33 PM
Posted 25 July 2010 - 02:48 PM
Have you ever talked to CCR about the misfires? I wouldn't be happy with that.
Posted 25 July 2010 - 03:32 PM
Edited by DrRockNC, 25 July 2010 - 03:39 PM.
Posted 25 July 2010 - 03:33 PM
Posted 25 July 2010 - 03:47 PM
Did you change the plugs and wires for 3 and 4, using subaru parts?
At least twice, maybe three times :-)
Posted 25 July 2010 - 04:49 PM
At least twice, maybe three times :-)
My next guess (if you have already replaced the coil and the ECU) would be a stuck lifter. It's a rebuild, so it's entirely possible.
Posted 25 July 2010 - 06:43 PM
Posted 25 July 2010 - 09:09 PM
Posted 26 July 2010 - 11:18 AM
Knock Sensor! Make sure it's not touching anywhere other than where it's supposed to. (The plastic can touch other parts of the engine and mess things up.) Make sure the mounting surfaces are clean. Also, If you don't have one, find someone with a torque wrench.. DO NOT go past 17 Ft. Lbs. (I Set mine for 15 Ft. Lbs.) So far the problem has not re-occurred since I adjusted the knock sensor!
Interesting. I actually got a knock sensor code a few months back and replaced the sensor. I was careful about the torque, etc. and the code hasn't come back. Now, if I could only remember if my rough start/idle issues began before or after that. I think before... Or were you talking about this as a cure for the misfire issue?
Posted 26 July 2010 - 12:34 PM
Worst case scenario you can always pay a Subaru dealer $95 to tell you what the specific problem is. (Make sure you get them to agree BEFORE-HAND you want the problem diagnosed, and not just the code read!)
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