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Re: 97 900SE T-5 knocking/pinging under load Posted by southsaab [Email] (#2143) [Profile/Gallery] (more from southsaab) on Tue, 18 Sep 2018 08:16:12 In Reply to: 97 900SE T-5 knocking/pinging under load, southsaab [Profile/Gallery] , Mon, 17 Sep 2018 18:36:33 Members do not see ads below this line. - Help Keep This Site Online - Signup |
New data - checked O2 sensors via OBD reader, they show voltage activity. Looked up a former Saab tech, and he called the condition "ghost pinging" caused by carbon build up. Recommended Seafoam topend cleaner. But if injectors have a weak flow due to carbon, that may not help. Decided to use Techron treatment first, then topend treatment next. Sensors seem fine.
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