1996 Subaru Outback Engine 'jerks' back and fourth at idle

1996 SUBARU OUTBACK
137,000 MILES • 4 CYL • AWD • AUTOMATIC
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JEDIJORDOS
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  • 2 POSTS
I just bought this car used last week. The check engine light came on the day after I bought it. Also when I come to a stop light (half the time) it feels like the engine is jerking back and fourth shaking the car a bit. I am just really worried I purchased a lemon. Also there is a volt meter the previous owner installed. When the engine does this 'jerking around' the volt meter jumps around too? Any thoughts on this would be great. thanks
May 12, 2010 at 6:38 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Hi there,

This could be a low base idle problem, but with the check light on you will have to get a scan done to read the set fault code, this will be an indication as to what the problem is, start here.

mark (mhpautos)
May 12, 2010 at 7:15 PM
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JEDIJORDOS
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  • 2 POSTS
I thought this too originally, but the rpm's don't dont change at all when this is happening. Just the volts
May 13, 2010 at 11:00 AM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Check the engine mounts, check that the electrical connection at the battery and alternator are sound and tight, do you know what the idle speed actually is?

mark (mhpautos)
May 13, 2010 at 11:29 PM
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