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logandingo Mar 19, 2026 11:58 AM

rough idle then stalls
 
I recently got my FC running but it can't hold an idle, I tried adjusting the TPS and cleaning the BAC out. When I first checked the TPS it read the voltage correctly now I get no Volts out of it. I also suspect a vacuum leak so I'm probably going to re hose the rats nest. If anyone got any ideas let me know.

TheWulf Mar 19, 2026 06:50 PM

Welcome.

Definitely sounds like a vacuum leak. You're on the right track. Vacuum leaks can be tricky, anything from a vacuum tube crack to a manifold gasket.

TPS getting no volts is suspect though. Have you tried to bench test it? I got myself one of on Amazon to bench test my TPS over the winter. This should also help rule out if it's a wiring issue or a sensor issue -- in all likelihood the connector is just loose.

Good luck!


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