4800-5000rpm misfire codes. Help please. - Saab 9000 Bulletin Board - Saabnet.com
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4800-5000rpm misfire codes. Help please.
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Posted by Jeffb [Email] (more from Jeffb) on Sat, 22 Dec 2018 15:26:54 Share Post by Email
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98 CSE. I have been going crazy trying to solve this misfire issue. Have swapped out 3 known good DI cassettes no change. Just bought a new SEM/Saab DI and still have the misfire codes. Plugs have less than 6K and were replaced trying to solve this. Fuel/ air Filters less than 10K. Fuel pump replaced with a low mileage Walbro rebuild. Swapped BPC valve and ECMs still have the Misfire. Not sure where to look next. Anybody have any ideas? Thanks for your help in advance. Did get a code once or twice along the way for the throttle position sensor. Those went away after cleaning the contacts in the connector.

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