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TPS issues

EFI Wiring Fundamentals

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Discussion and questions related to the course Motorsport Wiring Fundamentals

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Hi guys!

My TPS on my RB25 seems to be playing tricks on me.

While plugged in it reads 2v feed to the TPS but the second I unplug it it jumps back upto 5v?

Have tried multiple TPS sensors same issue on both.

Has a new wiring specialties harness and a power FC it only drops when plugged into TPS very strange can't seem to figure it out really starting to wear on me.

When a power feed is being pulled down that much from plugging something in it's a wiring issue, or an issue with what you're plugging in. I'd verify wiring, fix if needed, then replace the TPS once certain wiring isn't the problem.

I'm starting to think this brand new harness that I've got might have an issue as there is 12 volts at the fuse box and at the relays associated with powering the vehicle while I crank the car, it doesn't drop that much voltage either

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