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Old Today, 03:36 AM
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The EEC will adjust fuel and timing based on how the throttle is opened. I know at least one situation where a flaky TPS that caused stumbling.

If you're seeing those voltage fluctuations on the coils, maybe the coils, or their drivers, may be flaky. That can of course, also cause stumbling.

The TPS is easier and cheaper to replace.
 


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