Weird overheating problem.
Thread Starter
Joined: Aug 2005
Posts: 2,803
Likes: 1
From: Seminole County, Florida
Weird overheating problem. I have an 02 Z28. Boltons. Recently my car has started overheating at random times. For example I will be cruising at 35mph, and the heat will max out. The fans aren't coming on and when I crank the heater the air isn't hot. If I just let it glide in neutral or restart it a few times or just let it sit after a minute it goes back to normal temperature instantly and the fans are working again.
Is my thermostat sticking?
Is my thermostat sticking?
I have an 02 Z28. Boltons. Recently my car has started overheating at random times. For example I will be cruising at 35mph, and the heat will max out. The fans aren't coming on and when I crank the heater the air isn't hot. If I just let it glide in neutral or restart it a few times or just let it sit after a minute it goes back to normal temperature instantly and the fans are working again.
Is my thermostat sticking?
Is my thermostat sticking?
Fix your fans......#1
and #2.....yes, a sticking t-stat causes random overheating.
I have no clue why you are not getting hot air when you turn the heat on. Is the fan blowing strong air through the vents?
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Thread Starter
Joined: Aug 2005
Posts: 2,803
Likes: 1
From: Seminole County, Florida
Yes the vent fans are blowing fine, Its like there is nothing flowing through them. But when the thermostat unsticks the fans kick on and the heater blows hot again. It seems like one single root problem.
Your overheating because the thermostat is not opening allowing water to flow through the radiator. When closed the water pump flows water only through the motor and heads...once its hot enough and opens (thermostat) the hot water goes through the radiator to cool it down.
Last edited by BOA279; Sep 19, 2010 at 11:58 PM.
You may have a bad temp sensor if the fans are not coming on.
Cheapest thing to do is to take the t-stat out of the housing, bolt the housing back up, top off the coolant and go for a drive. See if things stay at a normal temp, maybe a little hotter tha normal. When you are about 230* both fans should be on HIGH. Or turn the A/C "on' max and the fans should also come on right away after the engine is up to operating temp.
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have you even checked ur coolant OP? I didn't see that in the original post. I had a small leak in my system awhile back and it would do what yours did. I checked my coolant and I had NONE!!
