I am getting the temp sensor code on my loyale and have tried switching out the sensor with another used one. Still have the code. No guarantees the other used one is good though. What actually needs to be done with this code? Is there something besides just replacing the sensor? Thanks

You didn't state the year of your vehicle and if is injected or not but for most models code 55 refers to the EGR temperature sensor or the circuit to it. I assume you are looking at the correct sensor so you now need to check the circuit to the sensor. Make sure the wiring between the ECU and the sensor is ok. The code can be generated by either a bad sensor or faulty wiring to it.

 

Most temperature sensors work by changing the resistance of the sensor as the temperture of the sensor changes.

I now saw your other post asking about the location of the EGR sensor. I would guess it is near the EGR valve but I'm not sure. My '88 manual shows the wire colors to it are black and the other one is white/red. Perhaps that may help you.

 

Your statements about the other device that has vacuum hoses running to it sounds like the EGR solenoid. That isn't what you are looking for and be very careful moving the hoses tied to it. That is a very expensive part new, and breaks very easily.

Thanks for the advice. I have replaced the egr sensor and the egr body so now it looks like i just need to figure out the circuit issue. Thanks