Rotary Car Club - View Single Post - Using a resistor to cure high TPS resistance?

RotaryProphet · 03-30-2010, 08:02 AM

First, check your -voltage-. The ECU pumps +5vdc through the TPS, and reads the result. If the voltage is very high, check your TPS ground. If it's very low, check your TPS +5v wire.

Lastly, if you need to lower the resistance, take the two wires you're trying to lower resistance between and add a resistor between them. With two electrical paths to follow, resistance will drop. If you have 7k resistance and add a 7k resister bypassing the TPS, you'll get 3.5k. Google will reveal the math to calculate the exact resister to change the peak to where you want it.

03-30-2010, 08:02 AM	#6
RotaryProphet Rotary Fanatic Join Date: Sep 2008 Posts: 147 Rep Power: 17	First, check your -voltage-. The ECU pumps +5vdc through the TPS, and reads the result. If the voltage is very high, check your TPS ground. If it's very low, check your TPS +5v wire. Lastly, if you need to lower the resistance, take the two wires you're trying to lower resistance between and add a resistor between them. With two electrical paths to follow, resistance will drop. If you have 7k resistance and add a 7k resister bypassing the TPS, you'll get 3.5k. Google will reveal the math to calculate the exact resister to change the peak to where you want it.