Wont warm up even with new thermostat - Page 2

colonel6632 · 11-21-2010, 09:50 PM

i'll check next time... but there is still a hole in my transmission... soo it's gonna be a while

acat550 · 11-21-2010, 11:34 PM

I never really thougth of the idea of the t-stat being defective.....it could be you know, ill check that next time I drive it, but I dont think thats the problem, because when I changed my thermostat, it was the same situation as now. But like you said, hoes will tell the truth.

robalero · 11-22-2010, 05:19 AM

well lets make that 3 of us, if I leave my car on full tilt fans blowing and it on defrost my temp gauge does not move however it does it warm in the car after a bit

acat550 · 11-22-2010, 10:00 AM

Hmm, well maybe its not just my alero like I intially thought...I feel more relaxed knowing im not the only one with this, however now we gotta figure out a solution to fix this problem....covered the rad. Any other solutions?

[ion] C2 · 11-22-2010, 10:46 AM

Covering the radiator shouldn't help since before it gets to 180, the thermostat isn't even open, which means no coolant is flowing and being cooled through the radiator yet. Coolant is just recirculating around the heater core and back.

widbyj · 11-22-2010, 11:06 AM

If the thermostat is stuck 'open' the system will never warm up. Even though less common that being stuck closed it does happen... Try replacing the thermostat, it's fairly cheap, and try to get all air out of the system (I drive the passenger front up a ramp, the angle helps).

jawa · 11-22-2010, 11:55 AM

i had 2 defective thermostats, it sucks but it happnes.

scott192 · 11-22-2010, 02:06 PM

put some insulation on the heater core lines i did that with some foil tape and i makes it warmer gotta love -35 wooooo

zzyzzx · 11-22-2010, 02:47 PM

I also suspect a stuck (or partially stuck) open thermostat. I've had both happen on my 1975 Chevrolet, but that was a long time ago. I haven't replaced a thremostat since around 1983 or thereabouts.

robalero · 11-22-2010, 06:15 PM

im going to be replacing my thermo and see what happens

acat550 · 11-23-2010, 02:39 AM

Hmm, that is weird that a new thermostat would be stuck open.... It does act like the old one, but I dont know for sure if something was actually wrong with my old one. So you guys think I should replace it again?

robalero · 11-23-2010, 04:38 PM

take it out, clean it good and put it in a hot boiling water in a pan. if it opens then its good ( keep it in there when cold too ) and use a temp gun of some sort to see when the thermo opens

acat550 · 11-27-2010, 07:04 PM

Well i dont think I have time to take out the thermostat this week, but I was searching around online, and the coolant temp sensor stands out at me! Another guy had the same problem with his Honda, cold operating temperature with a significant decrease in gas mileage, which I forgot to mention which happens to me in winter...and its not because of the gas its substantial loss in fuel economy. I know where the coolant temp sensor is but was wondering if I needed a special removal tool for it? And another thing I read in my Haynes manual is that you need to partially drain the coolant? is that true or could I just pop off the top hose and let the fluid in there drain and continue with the removal?
Thanks you guys for your input!
Adam

[ion] C2 · 11-27-2010, 07:52 PM

If the coolant is actually cold, the ECT is not the problem... if the coolant gets warm, your heat blows warm, and the gauge reads cold, then the ECT is the problem.

The temperature sensor does just that: it reads the coolant temperature. It's not going to make it run any certain temperature, it just reads it.

acat550 · 11-28-2010, 01:31 AM

I would anticipate that my coolant is warm, if not i think there would be a serious problem. I checked the rad hoses and the top one was warm so I bet its that ECT sensor....Any tips on removal??