This is the first time I've ever given this a look
The TPS is reading 20 deg @ idle and load is 20% @ idle
I just need verification if this jives up or not with other trucks.
Seems odd and is starting to lead to scanners I don't have. [ PCM ]
Thanx in advance.

 

I left this out of the first post
Spark advance 19.5 deg @ idle