dilanphu

Hey guys almost finished with swapping my ls1 into my nissan 240sx. I was wondering if i need the factory temp sensor if i plan on installing another one for an aftermarket water temp gauge anyway!!!

theres a bolt that plugs the hole where the factory temp sens goes but its stripped. I know i can get a bolt remover kit but that would also mean id have to remove my header because its in the way. basically a huge pain in the *** to do so. I also know theres another hole on the passenger side of the block but that bolt is not wanting to come out and i dont want to strip it. need help!!!!

Jtm2085

iTrader: (1)

It's up to you if you want to use the factory one or not. I just got done doing the same thing and I didnt remove the header.

dilanphu

well im using aftermarket headers, and theres not enough room for me to fit a bolt remover without taking the header off. someone told me the pcm needs to be able to read the temp sensor for timing but that makes no sense

Jtm2085

iTrader: (1)

Hmm I am unsure about the timing. But I have 1 7/8 headers and was able to get an ez out to it, use and wrench and back it out

dilanphu

Yeah mine are the sikky 1 3/8 headers. i definitely have to take off the header to get the bolt remover on the bolt. Well you didnt have any issues not running it? Car drives fine??

Jtm2085

iTrader: (1)

I didn't drive it hard or often with it broke, but it seemed fine

ragtopz28

iTrader: (57)

Some one told you correctly...the computer will add fuel if the sensor is reading that the engine is colder that it really IS. Hopefully a tuner will chime in and confirm my experience.

joecar

The ECT sensor being absent will prevent Closed Loop fueling.

Also, depending on how the spark timing modifier tables are populated, it will advance spark timing.

Also, it will cause temperature blending to undertemp during heatsoak conditions, causing cylinder airmass to be overcalculated, causing extra fueling and also extra spark timing.