Temperature gauge not reading

[ThugginCivic]

this morning i pulled my car out of my garage. since i can't use the car it's been sitting an today i realized that the temperature gauage was not reading it just stayed below cold. what is the reason for this. i need all the help i can get

[QuackerStacker]

how long did you let the car run if you did not let it run long enough the it masy not be reading it if you did and still not reading then you should pull the sensors and test them to make sure that is it reading .
I would just replace them a few bucks and your set to go

[cvcc_wagon]

i am assuming you started it up and let it idle? QuackerStacker is right tho, it wont warm up enough to change the gague unless it is run for a while

[ThugginCivic]

I let it sit for a good half hour plus after the first 10 mins without a change i rev'd it up to 5000rpm and held it there for a good 20seconds still no change

[QuackerStacker]

i dont know about i can drive my car for about 25 to 30 min befor it will even move if you have a resevor then let it run till you see at least a little over flow if your temp gage is not responding by then replace them

[QuackerStacker]

or make sure the termo. is opening and closing ...

[cvcc_wagon]

an idleing engine will not heat up very fast not matter what rpm but a half hour is quite a while, i would make sure all the connections to the heat sensors (one in the head and one in hte block) are good otherwise just replace them

[ThugginCivic]

now that i think about it when i did rev it up and wait i did see a little radiator fluid on the ground. not even alot but the guage still didn't move. so if thats the case what do i have to purchase

[QuackerStacker]

if you are going to check the sensors there are 3 i think two in the head and one on the rad.
i think i hope you the book on that car

[cvcc_wagon]

the one in the rad does not controll the gague, it sets off the cooling fan when it reaches a certain temperature. you will have to look at an 85 civic reapir manual to see where the sensors are, on my 83 they are both on the passenger side of the engine, one in the head and one in the block

[QuackerStacker]

yeah i though so....

[ThugginCivic]

it all good.......im bout to go buy the coolant temperature sensor and replace it it should be fine after that. thanks for all the help.

[QuackerStacker]

just make sure the water is circulating

[cvcc_wagon]

yeah, the temp sensor just controlls the gague, i would just wait till u have the car on the road before you get too worked up about it. it may be fine but you wont know for sure till you've driven it a bit.

[ThugginCivic]

i tested the sensor this morning morning and i know it had to be warmed up cuz the fans came on so i definetly know its the sensor