Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** thank you for your question.
What codes do you have or had exactly please? I would like to look at this issue from the beginning and work from there.
Let me know..
You have a APP circuit issue. Accelerator Pedal Position Sensor. Not a throttle chamber. How good are you at performing diagnostics?
Allot of times when you have APP sensor issues, it's not the pedal. The APP sensor shares a 5 volt reference with 2 different systems. Replacing parts is not always the answer.
Two things to try for your issue. First locate the AC pressure sensor. This is located on the receiver dryer. Unplug this sensor since it shares a 5 volt reference and start the car and drive it and see if the car continues to go into limp mode. If it does, let me know. We can move on to the next circuit. If it doesn't, then we may have isolated your issue.
Give that a try and let me know how you make out.
It may be a good idea to put the original APP sensor back in the car as well since after market electrical parts never work properly.
I understand how you want to make this car safe. So lets take things one thing at a time. Lets first unplug the AC pressure sensor and see if the problem gets resolved.
I need to step out for Fathers day dinner. I will be back in a couple hours. So take your time and let me know how you make out. Talk to you when I get back.
If that didn't work, try unplugging the Evap Vent Control valve and see if that does it.
Shouldn't need to jack it up. It's right in the drivers rear.. Oh.. Not vent control valve. Evap Pressure Sensor.. Sorry..
This maybe easier to help you if we spoke.. I summited the offer for Premium Service. Let me know if you want to go this route to help resolve your issue.
I only see one question which means you have only paid for 1 question that I can see. I am recommending Premium Service. At that point we can talk on the phone one on one about your issue.
This type of issue is tough enough working on when the car is in front of me. It's even harder when we can't talk, and we are just typing. I appreciate the understanding for fathers day. I will do what I can to continue to help you. But we may be limited on what we can do.
You said you unplug the AC pressure Sensor off the receiver Dryer and you unplugged the Evap Pressure sensor correct? It still goes into limp mode with both of them unplugged?
Can you share pictures showing me what you unplugged so I know you unplugged the correct thing? Also check the Dash Beam bolts. See video for location.
I never saw you ask about the plug color. I don't recall it anyway. I just noticed your question has two years. What year Maxima is this? The topic question shows 2004, but your question says it's a 2003
2003 Ac Pressure sensor goes into the condensor on the drivers side.
Is it the gray plug for the Evap that is all the way on top? I am just trying to eliminate the two components that would share the 5 volt reference with the APP sensor.
There is a Vent Control valve that has a Gray plug and the Evap Pressure sensor which has a gray connector also. The evap pressure sensor is back by the canister but not on the canister. It's actually maybe a hands length away from the canister.
Which codes are you getting exactly? Other than the Evap codes we created?
Are you using a volt meter to check the 5 volt reference down at the APP sensor?
ACC sensor? never hear of that sensor in this car. That is a ignition position. Do you mean App?
App sensors are rare. Normally if you have a App code, either the AC pressure Sensor or the Evap Pressure sensor ( which shared the 5 volt reference ) is interrupting the circuit.
The Throttle Position sensor is built into the Electronic throttle chamber. That is what I though you replaced. Where did you buy the parts? Also did you follow the diagnostic steps for the APP sensor I provided?
ok..I am not a fan of used parts, but did you go through the wiring and the steps I provided?
I don't like to give up. But I have only 2 more days to try to help you. Then I am on vacation for a week.
When you are at the APP sensor, does the red wire have 5 volts when this is acting up?
Relay? It's a direct wire connection between the Ecm to the throttle chamber.
At this point I would be ohm testing and voltage dropping wires from the Ecm to the Throttle chamber and to the APP sensor.