Temp Sensor not not working

[aeryk7]

I have a treehouse racing adapter so that is wiring is covered .

Not getting a reading to my cluster and i have a brand new sensor and i even swapped the wire on the sensor next to it and still no read out . Any suggestions.

[aeryk7]

Alright i grounded the wire on my sensor and it sent my gauge arm flying so it is the right plug, and it is a new sensor. Is it possible something is wrong with my cluster i mean my gas gauge doesnt work either.

[Brew]

Did you swap the rear-most temp sensor out for the brown m20 sensor?

[aeryk7]

Are we supposed to do that even on 318is cars cause i think i just used the old 318is one.

[aeryk7]

I have a brand new s50 sensor toward the front and i believe the other one is a 318is behind it

[Jason89i]

the temp gauge (318is or 325i single prong) sensor is self grounding to the head. if you installed with thread tape, it will not ground and you will not get any reading. just a thought.

cheers, jason

[aeryk7]

Thanks guys some of your thuoghts atleast help me troubleshooting.

[aeryk7]

Yeah figured out the temp sensor crap , now i am overheating , this project has been one small nightmare after another.

[DeM3n]

Hang in there. Its worth it. I found at that my temp problem was with the wiring. But now that its fixed my car's a beast!

[Jason89i]

Yeah figured out the temp sensor crap , now i am overheating , this project has been one small nightmare after another.

im sure you already know this.......but when you fill the coolant res, the system will have a LOT of air pockets. about 3/4gal. when engine is brought carefully up to temp, it opens the thermostat and allows the rest of the 3/4gal coolant to be added.

cheers, jason

[325Projectz]

Make sure you back fill the system correctly or you'll get air pockets, and that will cause the overheating issue.

[aeryk7]

Update: First i only had one hot hose then i put a funnel filled it with water and used the down pressure to force more water in the sytem the other hose got warm but the temp gauge is still going to 3/4 slowly. I am going to start it again and see if both hoses will get warm with out the funnel trick. Also i am not running anykind of fan as of yet and i am running a stock s50 thermostat which is new.

P.S.I know about getting the air pockets

[Ryan Stewart]

How are your hoses going to the firewall into the heater core situated? If they are backward it wont flow right for some reason.

[Herb]

I had a simular problem with my oem temp sensor, 3/4 or past red, freaked me out. Had a electric fan installed, no a a/c system at all, and it still was reading "cooked". Bought an after market guage and I'm reading a constant 210 F. Couldn't be happier.

[RyanZ06]

I had a simular problem with my oem temp sensor, 3/4 or past red, freaked me out. Had a electric fan installed, no a a/c system at all, and it still was reading "cooked". Bought an after market guage and I'm reading a constant 210 F. Couldn't be happier.

210 is pretty hot