you put it on a diagnostic tool or a T4.
Might save some time and money if it can pinpoint what it is.
So many sensors on the cars nowadays.
Just seen your question on the ZT Owners club, saying the same, get it on a T4.
The IACV can cause running problems if not set up properly with T4 or another diagnostic tool that can do the job. Same for the TPS I think but not 100% sure.
Good luck with it.
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