Heating Problem..
Thread Starter
Drifting
Joined: Jan 2008
Posts: 1,752
Likes: 62
From: New Madison Ohio
Heating Problem..
I have an 84 and it won't come up to operating temp. It used to run between 195-200 degrees now it won't get up past 165 degrees and sometimes less. I know one cause could be the thermostat stuck open, but I have another question. I replaced the engine coolant sensor broke it taking off some of the emission stuff, if this is not installed correctly could this be causing the temps to run low. The last thermostat was installed about two years ago.
Race Director
Joined: Nov 2003
Posts: 12,220
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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Sensors must be installed using a sealant that won't inhibit grounding. If the wrong kind of sealant were used, it might be possible. Another cause is insufficient coolant. Normally, you'd be able to tell that later by the temperature of air coming thru the heater core.
Of course, even new stats can be bad. You'll find it often recommended to submerse a new stat in water (on your stove) with a meat thermometer to verify correct operation.
Of course, even new stats can be bad. You'll find it often recommended to submerse a new stat in water (on your stove) with a meat thermometer to verify correct operation.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 12
when gauge is reading low?
Check what is showing on the temp gauge with the true engine temp
Use a thermo gun or buy a cheap mechanical temp gauge to compare with
