seattle_fleetwood Posted December 14, 2004 Report Share Posted December 14, 2004 My ’91 Deville has recurring issues with Code 98. I have a factory manual that says this P/R/N/D issue retards the timing and leans out the fuel rack. Additionally, my car gets unbelievably bad gas-yardage (like 11.5 avg. hwy/city). I have cleared the code a few times, re-programmed the car's idle after disconnecting the battery (according to the owner’s manual). The way I figure there’s an error code is when I see bicyclists passing me on the street because my car thinks it's an old 4/6/8, and not because the car idles poorly, or idles fast. So, my question is; what causes code 98 to show up, and has anyone else experienced similar performance problems when the only error code is 98? The motor has 117,000 Link to comment Share on other sites More sharing options...
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