'88 5KSQ High Idle

[Christopher Ritchie]

Still troubleshooting a high idle problem on my '88 5KSQ.  Codes are 4444
and 0000.  No vacuum leaks.  Leaned conncetions.  Cleaning the old and
swapping in a good ISV was no help.  High idle about 90% of the time.

What to look at next?

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