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Old 12-04-2011, 04:13 PM   #1
Scooby Newbie
Member#: 87614
Join Date: May 2005
Chapter/Region: MWSOC
Location: minnesnowda
9698 GC8 & GF4
Black and White

Default '98 OBS 2.2 odd stutter at speed

So basically, this has now happened twice in the past year or so, but I'm still not convinced its not fuel-related (ie bad gas).

The car runs perfectly almost ALL year, slight hesitation or a stall here and there, but its extremely infrequent and happens at most, once a month. However, those small quirks are to be expected with 236,000 miles on a stock block and trans (IMO).

The issue yesterday, is far more annoying and concerning however. While driving (about 30 miles into a 65 mile trip) it'd begin to stutter, hesitate, and almost just become unresponsive to throttle input. That is, I'd maintain a constant pressure and rpm on the pedal and engine, but it'd freeze up and then surge to accelerating.

It has happened twice now, but in slushy road conditions and snow with temps roughly 30*f. I plan to replace my plugs, filter, ect... again and will be cleaning the MAF and Idle Air. It's beginning to get annoying, especially if it decides to happen again while I'm on the freeway like its done both times.

I've kind of ran out of ideas since last time it happened I tried a different knock and cam sensor even, but its happened twice, both with the same atmospheric conditions and same symptoms.

Thanks in advance for any ideas/help, normally I can sort things out on the 2.2's like its my job within an hour, but this one has evaded my mind for a year now.

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Old 12-14-2011, 01:32 AM   #2
Scooby Specialist
Member#: 303881
Join Date: Dec 2011
Location: norwalk
2011 STi


Sounds like its bogging.. first option is to look at ur air filter and clean it.. I had the same problem with my old car... a mouse built its nest in my intake! /:
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Old 12-14-2011, 12:03 PM   #3
Scooby Newbie
Member#: 259497
Join Date: Sep 2010
Location: Bowmanville, Ontario, Canada
1998 legacy L Wagon


Idle air control thingy may be clogged up.
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