It's great that you always start your posts with the real priority.
As for your high idle, as you are aware with it being TBI, idle speed is not adjustable. However, there is one process that we can try to reset which is the minimum air rate which will hopefully relearn the ECM's ability to control the idle.
I attached the process. Also, at idle we should be around 500 RPM and there is a chart showing the TPS voltage. When the vehicle is idling, note the RPM and then measure the voltage of the TPS. If the TPS is correct voltage but still has high idle then we know it is not the TPS.
Let me know what you find. Thanks
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Monday, April 27th, 2020 AT 7:30 AM