Car Questions
RepairPal is your advocate for car care advice and guidance


(2000 Jeep Grand Cherokee)
in Bronx, NY on June 16, 2010
why does a thermostat gets stuck and what are the systoms of a open or close thermostat
Displaying 1 answers & 2 comments
Popular Answer
on June 17, 2010
Thermostats can get stuck due to normal wear over time. My guess is that the thermostat in your 2000 Jeep Grand Cherokee is stuck open causing the check engine light to come on. A stuck open t/stat will cause the engine to run cooler than designed resulting in an increase in emissions, Symptoms would include a temperature gauge reading lower than normal and a check engine light on. A stuck closed t/stat would cause the engine to overheat - very quickly.
on November 07, 2010
the check engine light is on and only blows cold when i turn it to do i fix?
on November 07, 2010
Get the code for the Check Engine Light, and be sure that you radiator is full and that your heater control valve is working to allow hot coolant into your heater core. If that is all ok and your engine is not getting hot enough, then replace the thermostat.
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Can a exhaust manifold leak affect the way the truck heats such as inside the cab. For example I could let my truck s...
97 Ford Explorer XLT, 4.0 sohc. Blend door seems to operate fine but only cold air blows, unless you rev motor. So, h...
Didn't find what you were looking for?