Basically

My D16z6 keeps overheating but it does this funky **** where it'll be hot then it'll go back to normal temp then hot again then back to normal temp....what could it be?????

POE

bad themro? i dunno bump for u

JDM_Ej

Check your coolant level, bleed the air out of the system, change the thermostat, if all of this still doesnt fix it. Look into the waterpump or you headgasket is going.

civic99b16a

most lickly your thermostat do a coolant flush while you got the coolant fluhed change your thermostat its only 10-15$

fakemike

Does the car do this at high speeds (30+ mph)?

How long doese it take for the needle to go from normal to hot?

I had an electrical problem and my needle would sometimes jump around. But the needle moved way too fast to be overheating (Its not possible for a car temperature to go from normal to hot in a matter of seconds).

duggy

do you see smoke comming out of your block? lol

Basically

Yeah it does it only when i am driving around,it goes up and down real quck.......what was wrong with yours???

HitEm'Up

Still sounds like a stat to me

flood

Sounds like an air bubble going across the temp sender.

with a cool engine, take the cap off the car and let it run till the thermostat opens. Ensure that the coolant level stays up. I have also heard there is a bleeder somewhere but I haven't looked yet.

Do this though as if you get an air bubble stuck in your head it will overheat and blow the head gasket.

Ekmenoxo

more then likely your thermostat, replace that. untill then keep your heat on at full blast, all the time, it bypasses your thermostat, overheating will do some serious damage to you head. good luck

Contraband

Make sure your fan comes on too. Might have gotten a short or something.

RedDC5

sounds like a thermostat problem. Check and see when your car is on if the hose leading to your thermostat is hard. If so, its your thermostat

ek4b18c_r

I would have to agree with it being the thermostat, and if you do change it you might as well change your radiator cap.