db***** Posted February 24 Share Posted February 24 99 Legacy SUS. 2.5D. Revs go up and down after filling up on gas. Usually get premium from Shell. Have read a little bit about this seems to point at vapor canister, purge valve, or maybe gas cap. Any help is appreciated 👍 Link to comment Share on other sites More sharing options...
db***** Posted March 3 Author Share Posted March 3 Anybody have any insight? Don't want to get stranded someday after getting gas. Problem has been getting a bit worse. Link to comment Share on other sites More sharing options...
forester2002s Posted March 3 Share Posted March 3 Have you checked for any DTCs (Diagnostic Trouble Codes), using an OBDII scanner? Link to comment Share on other sites More sharing options...
db***** Posted March 3 Author Share Posted March 3 It does not have any engine codes, no check engine light. Link to comment Share on other sites More sharing options...
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