'86 T-type Throttle Position Sensor

[ttypetex]

Idles better with TPS plug disconnected. New sparks, cables, control module, coils good. Cleaned IAC. Slight erratic miss with TPS connected. Smoother without.

What do you think? Can TPS go bad?

 

[Topjimmy]

Is it adjusted properly? Detailed instructions here:
Throttle Position Sensor Adjustment

HTH - Jimmy

 

[TurboRegal84]

What scan tool are you using and what are the TPS/IAC numbers?