Purestreet, it sounds like your TPS needs to be replaced. That doesn't sound right at all. Are you sure you're checking it correctly? Explain how you're doing it.
Oneba87lx, the TPS would affect your idle if it was showing part throttle when it should be showing closed throttle. If it's under 1 volt now, that shouldn't be a problem. What kind of voltage are you getting from it that you feel the need to adjust it?
If you're having idle problems, you may want to start another thread describing it, what you've done so far to fix it, and what modifications you've done to your car.
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351W 89 Mustang GT Convertible
[This message has been edited by jimberg (edited 06-19-2001).]