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Well I have driven with my TPS not hooked up at all, on accident of course. First, it will throw a check engine light. Second, the car always thinks it is idling, so the ECU is going to freak out and start adding and taking away fuel based on O2 and you are going to get weird outcomes(on mine I was getting AFR's that bounced from 10:1 to 19.5:1 within a second). And lastly, it ran awful because the AFC never knew that the car wasn't idling so it never corrected the airflow so I couldn't run even 5psi without it going rich, then bogging down/misfiring, then bucking real hard as the car attempted to burn off the excess fuel on the top of the pistons.
That is what a faulty or disconnected TPS should do, it turns out I missing the little metal clip that held the harness in, and after a few good bumps it worked itself loose. I have since replaced the clip.
As for a FPR symptom I am not really sure, but I hope I was able to help with the TPS stuff.
:goodluck:
Matt
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1992 Eagle Talon TSi AWD
320awhp/320lb-ft tq
12.772 @ 108.57
1992 Mitsubishi Galant VR-4
678/1000
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