[Will]

[video width=425 height=344 type=youtube]3p3taA50WEo[/video]

This is what is going on. As you can see, it’s a little hard to start…but it DOES start. It seems to run fine until you mess with the throttle.

[Will]

Instead of running new wire for possibly nothing. I poked a hole in the output wiring insulation close to where it goes into the ECU and tested voltage with the ignition in the ON position. It registered about .5 volts and I slowly opened the throttle all the way, and the voltage slowly went up to around 4.5-4.8v which is pretty much in spec per the FSM.

It still can be a little hard to start. It stumbles a bit but finally runs, and runs perfectly for about 10-15 seconds and then slowly stalls out. Giving it more than just a tiny amount of throttle kills it. I am once again stuck.

[Will]

This is where I think my problem might be. Going to run a fresh wire from the sensor to the ECM tomorrow and see what happens.

[Will]

On this engine the motor position sensor and the throttle position sensor are two different things, but yeah, I still have a code 14 which is the TPS. I checked the harness, I am getting power to the sensor from the ECM and also a good ground. The only other thing I can think of is that the actual sensor output wiring is bad. (It’s a 3 wire sensor)

[Will]

I just spent the afternoon yanking the entire ECM wiring harness out through the firewall. I checked the entire length of the wire and found a few different crimps connectors and redid them just to be safe. Put everything back together and still does the same thing. I also just swapped out my MAF with a known good one just to rule it out, still the same issue.

[Will]

Check engine light was not on previously (or now) but I did check for passive codes using the analog multimeter method. Came up with motor position sensor code. The coolant sensor was also in spec. Thanks for the reply!

[Author]

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