Need advice on tps sensor and knock sensor

[romaniron]

Ok, so I'm trying to sell my car and then stuff happens....I just replaced the front brakes and the front callipers. Now...my check engine light came on and the reading is for the t.p.s and the knock sensor. Is it necessary for me to fix these before I sell or can I sell and inform the buyer? What is their specific function anyhow?thanks!Romaniron

[elwesso]

You wont get a CEL for a knock sensor, so really they wont know whats wrong.. I sell knock sensors

The knock sensors are bolted to the block and detect detonation... However, I dont think theyre as necessary on the QX4 because it runs on regular gas anyway..... So it wouldnt be a huge performance loss like on the Q.....

The TPS is called the throttle position sensor, and is used to determine transmission shift points and injector open time.....

The TPS should be replaced, as it is vital (KS are vital as well but not as).. Talk to Joe, and it should be an easy fix...

[romaniron]

Thanks! So, I'll check into pricing on replacing the tps - Who's Joe? Sorry, I just found this forum and signed myself up....

[Q451990]

Joe is our resident parts guru at http://www.everythinginfiniti.com (1-888-216-5328. Before replacing the TPS, check it's electrical connectiosn for moisture or corrosion. Did you clean the engine in preparation for selling your QX4? If so it may just be a simple moisture issue.

Heath

[romaniron]

This is GREAT! You all are a huge help!Thanks again...

[maxnix]

Wasn't there a recall on a lot of these TPS by Nissan? Might pay to check with dealler or Nissan USA.

[elwesso]

When I get home I will check my TSBs.

[romaniron]

I called Infiniti because I found online a recall statement, but the dealership said no - could they be lying to me? HMMM - Elwesso - did you get a chance to check?

[elwesso]

Sorry... I didnt download the TSBs for the QX4.....