Sequoia, 2001 with 97,000 miles- constantly at Low Idle---
Changed Plugs yesterday and was a little better.
Thanks to this forum I removed and cleaned the throttle body. There was a fairly think ring of buildup on either side of the butterfly valve that seemed to make it difficult for the valve to operate in a linear or predictable fashion. A easy job to clean, got all the gunk off and re-installed it. While I was at it I found a few vacuum lines that had no clamps and with an aging car the rubber does not grab like new. I clamped them. I also used Caig D-Oxit 5 spray on all the connectors.
RUNS LIKE NEW!! It now idles at 600-800, and starts without hesitation.
Thank you to all for this thread.
If anyone has other tips for a V8 hitting 100,000 miles I would love to hear about them.
George
Metairie, LA:ts: