my gauge for my coolant temp has been reading really low (think it my be the coolant temp sensor) ever since i put my engine in (most of the time it barely if off the cool mark on the gauge). but sometimes it will go up to close to the middle (where my old civic normally operated). is this in any way normal i just though it could contribute to my horrible gas mileage (runs rich). BTW its a 94 EX with the D16Z6

 

Wow almost sound like there is no thermostat in there. Temp sensors do not go out often. Have you tried changing the stat out? It is a cheap part that alot of people overlook that can cause some serious damage.


One other thing I did recall was if ever I was low and there was an air bubble in there it, the gauge would act funny. Have you bled the cooling system for air bubbles?

 

change your t-stat and yes it will cause bad MPG

 

I agree with the post above. Sounds like either no thermostat ot yout thermostat is phucked. You can get one for like $10 with gasket.

 

i had a similar problem, it turned out to be the thermo

 

the only prob with that is the
t-stat is brand new....

 

good.... now has it been burped? How many miles have you put on? Was it replaced with the correct opening temp?

 

and for some reason my car dosent have a bleeder valve on it were the upper hose goes to the head

 

ok... are both hoses gettin hot when it is warmed up?

 

i will check it out when go drive it here in a min
here is where i am supposed to have bleeder valve correct i remember on a z6 head i had recently it had a bleeder valve on it and mine looks like this

 

both hoses are hot

 

what does that mean if both hoses are hot? because mines is.. also motor get really hot.. but temp gauge shows like almost half way..

 

it means that the heater core isn't clogged.

 

If both hoses are hot, it means that the stat is working and the car is circulation coolant...as it should.

I might suggest finding out what stat you put in. Maybe make sure the stat is the correct heat range. Also make sure you put in the rubber gasket. Without it... water could leak past the stat.

 

rubber gasket was installed as to the open temp on the t-stat i have no idea i really dont wanna open the sytem again for nothing i just wan to be sure

 

I am amazed since it says you in Texas and it has to be hot out there. But it does almost sound like the car is not getting warm enough to get out of cold start so it would be running rich. Not matter what you are gonna need to jump in there and see what is going on no matter what. If you have the old motor it would not hurt to pull the sensor off it and swap it. No sense in buying a new one when you may have one there that works.

 

ok i will give it a shot and yeah sometimes it dosent want to start when its real cold the weather in texas is stupid you never know whats gonna happen within 5mins
I have 3k on my motor btw

 

to bleed it take off the rad cap and put the heater on hot start the car let it run for 2 fan cycles or till the heater is blowing hot air. Sounds like a t-stat just becuese it is new does not mean it is not broke. part stores give the wrong things in packages and sometimes they give deffective items.

 

goin to buy a new t-stat what degree one should i ask for

 

oem temp...I think its 180...dont quote me though

 

car still refuses to warm up after new t-stat I guess ill just run it rich the bottom rad hose is cold now.....

 

gonna take it in somewhere i guess honda need them to fix the stupid seatbelt in my car anyway let you guys know what they find since no one apparently knows...