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Old 08-28-2008, 01:18 PM   #1
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Join Date: Apr 2008
Location: atlanta
Posts: 3
Unhappy surging RPM

Hey Guys
I have a 2000 tiptronic with 85,000 miles last week got a CEL noticed the RPM surging between 1400 and 2000 very slightly once above 2100 no surging and she ran great. Seems to only happen while going between 30 and 50 mph. Went to Autozone got the code 1117 which is oxygen sensor after CAT not heating so I replaced both Oxygen sensors after the Cats, also changed Airfilter, Cleaned Mass airflow sensor,even unhooked the mass air flow sensor and test drove still surging Rpm thinking that would solve the problem. The CEL is gone but the RPM surging is not gone. Anyone had this happen and possible solutions?
Thanks
Daniel
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