Why is the thermostat on my Jeep Grand Cherokee not working?

Why is the thermostat on my Jeep Grand Cherokee not working?

Grand Cherokee Thermostat Wiring – If the thermostat itself isn’t the problem, it’ll be the wiring/sensor associated with engine water temp detection, or the coolant temperature sensor itself. If playback doesn’t begin shortly, try restarting your device.

Where is the temp sensor on a Jeep Cherokee?

Second, the temp sensor for the gauge is at the back of the engine in the head, the hottest place in the engine cooling system. It might be 220° there, but only 195 at the stat. It is a problem with a long engine block with the coolant coming all the way from the front.

What’s the temp of a Jeep Cherokee in Texas?

Here in Texas at a pretty constant 100 plus degrees during summer months my jeep will run all day at about 190 degrees if I leave the fan on while Im driving.

Can a Jeep Grand Cherokee Run too cool?

The fan can come on at any time. P0128 is not a serious threat to the immediate drivability of your Grand Cherokee. It should be noted that most modern fuel injected engines to like to run at 200+ degrees. Letting them run too cool can problems after an extended period of time.

What should the thermostat be on a Jeep Wrangler?

Think about it… if the engine is at 210 degrees (or hotter, whatever), both a 180 and 195 degree thermostat will be fully open. There will be NO difference. On a cold day, yes an engine may run cooler with a 180 degree thermostat. Personally i changed mine out to a 180 the first week after i bought the jeep.

What should the operating temp of a Jeep Cherokee be?

You could suspect other things like the engine speed decrease (your thought) or a fan clutch issue, but the 185 degree F operating temp under most circumstances is very acceptable/desirable. Your Jeep likely suffers from the 33″ tires and stock gearing.

Why does my Jeep Wrangler have a low temp?

Thermometers like this can be inaccurate on rubber surfaces, so check heat at metal points when possible. If the gauge is accurate and if your Jeep’s cooling system is full and “burped”, with no sign of low coolant (overflow reservoir filled to the correct line and radiator full when cold), the low temperature reading is likely a thermostat issue.

Why does my Jeep Cherokee Run so hot?

Lol, but I’d be more likely to put in a 195 or slightly hotter stat in than leave it completely without one Engines with no stat will have trouble warming up, except on a hot day. Then they will run hot and not cool down from the coolant not spending enough time in the radiator to remove heat.

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