BbotVIII

Hey, I have had my evo 8 for a little while now and the stock water temp gauge on the dash is not functioning. The previous owner was a real idiot and had an aftermarket water temp gauge installed (which fails to work also-_-). I am guessing this is the reason why the stock gauge doesn’t work now. The gauge itself appears to be fine. I think this because when I turn the car off it goes all the way down. The problem is it could be 40 degrees out and when I first start the car after it has been sitting for a day of so and it will immediately go up to dead center. For this reason I think it is a wiring problem or the gauge is disconnected somehow. If anyone is familiar with this type of stuff and has any input it would be greatly appreciated as I am new to this stuff and clueless lol. Thanks, Brian

barneyb

There's been other owners who thought they had overheating problems when it turned out to be a wiring problem. The gauge would read normally part of the time and then suddenly read hot. If they logged the temperature via the ECU everything was okay. So, maybe you have a related problem.

Since I have never encountered this problem I can't provide further help but can only suggest you search for posts concerning overheating problems.

memphis raynes

iTrader: (4)

There is a temp sender on the front of the thermostat housing and one sensor on the back for coolant temperature. The one on the front (one wire) sends to the gauge in the dash. I would check that and see if it is loose, the connector base tends to get loose over time. I would replace it and see if that fixes your issue?

detroit pistins

iTrader: (102)

btw this is the sensor that Memphis is referring to, and it can be purchased it from Autozone.
cheers!

ps. make sure your grounds are good as well!

BbotVIII

Thank you guy! I will def look into this stuff soon! I want to get that damn gauge working hahaha

BbotVIII

Ok so I went out and looked and I have an orange wire that's connected to a sensor that looks a bit different from the one pictures above and next to the sensor I have what looks like a original black wire just hanging free with a taped up plug on it. I guess that I need to buy the one above, install it, then slip the black connector over that prong on the above sensor? Write or wrong? Lol thanks again

detroit pistins

iTrader: (102)

can u post a pic of the setup u have? ..... the good news is this sensor in the pic is cheap I think it was around $15

k0lok0yboi

Hey I'm sorry for the revive but i got that same sensor to replace my coolant temp gauge sensor as well, but im looking at the front of the thermostat housing and it connects to a black wire by going over a screw and secured by a nut. on my picture itll be that brass part

detroit pistins

iTrader: (102)

Difficult to see from the pic.... can you take a "zoomed-out" pic to see what ur looking at?
it could be that the previous owner broke the clip that "slides" on the connector, and mod this one to work.....
Are you the original owner?
did u try the new sensor?

k0lok0yboi

Im not the original owner, but the connector from the black wire is this ring that goes over srew threads behind the sensor to the thermostat housing. the part i got looks exactly like yours, and from autozone as well

4b11slayer

k0lok0yboi

yea dude i think i got the right sensor, but it looks completely different than the one that guy was alluding too earlier. also got a better pic to show that im looking at that exact spot on the picture you got

detroit pistins

iTrader: (102)

Can you remove the connector? meaning is it a quick disconnect type like stock or wrapped around that input to the sensor...etc?

k0lok0yboi

i can remove the connector by uncrewing a nut and removing the connector from the output of the sensor. guessing i got some kind of weird sensor but why would the original owner use a completely new sensor unless its some aftermarket thermostat housing or something

k0lok0yboi

anyways i suppose it could be any fluid temp sensor to use for this gauge. bless the evom forums XD