![]() The red circles show where the "structural collar" was mounted to the transmisson(left) and oil pan(right) The first one will show where i took the "structural plate" off as told in the book for models exceeding 2003 and the 2nd photo will show where the sensor is supposed to be on models preceding 2003. I just wanna get that check engine light to stay off so my mom will quit freaking out :P Please help me! I've been searching for hours and been through as many different resources as i could get my hands on. ![]() If you told me how you got to it I'd greatly appreciate that as well. If anyone has ever changed the CKP sensor on a 2003-2005 dodge neon please let me know where the sensor is. but that doesnt really make too much sense when you look at it in person. ![]() I heard from one person that it is "between the first and the second bolt down on the bell housing" on the transmission. its not hidden behind the "structural collar" like the book i bought told me. You will need a replacement Neon TPS sensor and to use your multimeter to calibrate it properly.Its not above the oil filter where it is on the pre-2003 engines. If your Dodge Neon throttle position sensor does not respond with these voltage values, it’s a clear sign that your TPS sensor has failed. With your Dodge Neon throttle fully opened or at the Wide Open Throttle position, the signal should read between 3.2 to 4.9 Volts DC. Now have a friend push down on your gas pedal all the way, or you can manually open the throttle blade. Measure the signal wire for voltage and with the throttle plate closed you should have anywhere between 0.4 to 1.0 volts of DC. Now leave the engine off but make sure the ignition is at the “ON” position. Push the red lead of your multimeter into the ORANGE wire, and now you are ready to test the signal. You should have the TPS harness unwrapped to the point where you can pierce the TPS signal with your multimeter lead. Unwrap your TPS harness until you can get to a spot where testing the signal voltage is easy to do. The best way to test the TPS signal wire is to trace back the ORANGE wire earlier in the wiring harness. In order to test this wire however, you’ll need to reconnect the Neon TPS sensor. ![]() The signal pin is a ORANGE colored wire with a BLUE stripe in it. The last wire you’ll be checking is the throttle position signal, which is the wire going to PIN B. If you have power and ground at these terminals, this means that your TPS sensor is getting power. Regardless of the color this pin is the ground signal. Some Dodge Neons have a BLACK wire here with a BLUE stripe in it. The next wire to check is the wire that’s coming to PIN C, which is a BLACK wire. If you don’t have power here, make sure that your Neon ignition is turned to the “ON” position. Wire A should be a PURPLE wire with a WHITE stripe in it, and there should be 5 volts of power here. If you get confused you need to make sure that you are testing on the engine harness. Keep in mind that our Dodge Neon TPS sensor wiring diagram shows the sensor flipped. The pin you need to check is the wire that is labeled A on the engine side. In order to make the testing procedure easier, our DIY tutorial will show you the TPS sensor side as well as the ENGINE harness side. Once you’ve got the Neon TPS sensor disconnected, you can use the Neon wiring diagram below to begin the testing procedure. You may need to slightly push your upper radiator hose out of the way to reach the connector. It’s mounted to the opposite side of your throttle pulley, and connected to the throttle shaft. When you are ready to begin testing your Neon throttle sensor, you’ve got to open your hood and find it. To test your Neon TPS sensor, we’ll be using a digital multimeter to check the wiring connector for the proper opwer and ground signals. RPM or engine speed increases on its own.Here’s just some of the more common Dodge Neon problems that can arise. There’s quite a few issues that will come up when your throttle sensor fails. How do I know Dodge Neon TPS sensor is bad? While it may be slightly easier, the TPS connector and wiring is closer to your radiator fans, and your Neon upper radiator hose can get in the way. Because the new 2.0 liter in the Dodge Neon faces the intake forward and the exhaust toward the firewall, working on the TPS sensor slightly easier. This engine replaces the 420A engine, and it’s also found in non turbo Mitsubishi Eclipses and Eagle Talons. Today I’ll be showing you how to test a Neon TPS sensor in a 2002 2.0 liter Dodge.
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