Is my thermostat stuck open
- Thread starter SLY GT
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xseler8
Member
Did you buy your car new or pre-owned.Are you the original owner. It could be the thermostat is crapping out. If pre-owned the last owner may have installed a cooler thermostat. Anyway,changing the thermostat is always a good move.Also,how is the anti-freeze? Check it. Does it have to be replaced.I think a hydrometer is used to check the protection level.SLY GT said:
Just change the T-stat...its easy and cheap. Just changed one myself. Also had the coolant flushed and filled. Actually made a difference in the heat.
FLORIDA - The temps are a cold 55 in the morning. It will stil take my stang a good 7-10 minutes driving "without S/C boost" before we get to a good operating temp. After I hit the first bar, there's plenty of heat coming from the motor, via the vents, then I know the thermostat has opened and the motor is warmed.
Still, it might take another 10 more minutes = 17-20 minutes before we get to normal operating temp.
This is based on only a 55 degree start.
Still, it might take another 10 more minutes = 17-20 minutes before we get to normal operating temp.
This is based on only a 55 degree start.
More often then not what I've seen come though at work is a customers cars radiator cap is not holding proper pressure. On my beater car for the winter, 89 chrysler new yorker, the cap is suppose to hold 16lbs and was only holding 8lbs. That's why my car did not warm up with a $hit. I'm not sure if our caps are self-venting, haven't looked, but I'd start with a cap and if you have the time a thermostat wouldn't hurt either.
menasci
Member
You guys do realize he said 10 minutes right? In NJ December weather. That's below freezing. If your Mustang heats up faster than that in below freezing temps, make a video and post it here. I call BS on you ALL. Shame on you for recommending he start replacing parts.
It takes more then 10 mins in the cold. I'll run my car for 1 cycle(15mins) with the remote start then still have a good 5 mins of driving until i have full heat.sgarlic said:
Nater
New Member
I was wondering the same thing too. I just had the coolant flushed and replaced and it doesn't warm up that fast. My boss' Chevy pickups warm up within a couple minutes. For my car it takes about 5 or so minutes of highway use before the gauge moves into the Normal range.
Instead of replacing it, why not test it? Place it in a pot of water on the stove that is metered with a thermometer, heat it up, and see if it opens at the proper temp. 
ToplessStang
Member
Nater
New Member
Cars these days warm up faster when they are under a load rather than idling. I start it, let it run for a few seconds to get the oil circulating then go. Warms up a whole lot faster for me.
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