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cough/stumble 99 GT
Posted 15 March 2006 - 06:32 PM
Where to start??
Posted 18 March 2006 - 10:35 PM
Subarus don't like bosch plugs as much.
Posted 19 March 2006 - 02:57 PM
Consider a MotorVac treatment or some sort of good combustion chamber cleaning. The Phase I 2.5L engine runs rich and has some carbon issues.
Also, have you ever changed the O2 sensor? Mine was weak (no codes) and was aggrevating the carbon issue by throwing off the fuel maps even further.
Been there twice with the "off idle stumble" on my 97 OB over the years.
Posted 23 March 2006 - 09:00 PM
Posted 24 March 2006 - 09:24 AM
I seem to remember reading about a fairly recent "campaign" by Subaru for MAF problems on the 99s. This may not have been a "recall", so letters might not have gone out to owners. I realize that you've resolved the problem for now, but perhaps you could call a dealer or Subaru of America and ask them about this. If you do get confirmation of a campaign, please let us know here. Thanks.
Update: I removed the MAF and cleaned with a spray cleaner. Put it back on and have not problem since.
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