Why,car temputuer gage goes from normal to hot then back to normal?

Question:
i have 2001 jaguar s type if the heater is on off ,the temp gage will go to normal then in a littel while to hot.then if i turn heater on it will go back to normal.if i start with heat on its ok.whats wrong?

Answers:

Looking to buy this car but has these problems...?

I had an AUdi that ran the engine fan when I turned on the fan inside. Could that be what is happening?

---

Broken turn signal,windshield wiper switch, headlight controller? Mechanics Welcome.?

It could possibly be a bad thermostat, or even more likely a leak in your radiator. For your sake, I hope it is just the thermostat.

---

What was your first car?

Your air valve could be sticking. You should get it seen to as it could potentially blow the head gasket

---

1997 Grand Am GT (3.1 Engine). Intermittant throttle surging problem at idle speed.?

its probably an electrical problem you should get the wiring checked

---

Mildeow in Car! Help!?

The most common time to see this is when a car is driven then parked. The water in the engine absorbs heat from the metal and can not dump it to the radiator, so it gets hotter. When you turn on the engine, the first water to hit the gauge is the cooler stuff in the hoses and radiator then the hot stuff hits and shows a higher temperature (obviously depending on where the gauge is located.)
When an engine first started, no water goes through the radiator to allow the engine to get up to more efficient and clean operating heat. Then the thermostat in the radiator opens to start cooling some water. I suppose it the thermostat was not matched well, the water would get hotter than planned on the gauge, then cool when the radiator came into use.

---

My tires a cupping in middle. air press. is not too high. what is problem?

It sounds like a bad thermostat. When you turn on the heater hot water from the engine flows through the heater coils, allowing more cooling time for the fluid as it travels through the system. With the heater off the water circulates more quickly through the engine and radiator with less time to cool while going through the radiator. The thermostat could be sticking or you may need a radiator flush to remove build up that is partially blocking the radiator. I assume it is not leaking because you didn't mention any leaks.

---

More Questions & Answers ...

What would cause my 1986 F150 4x4 to stall after running for a few min and not restart for hours?

New fuel sending unit and new fuel gauge.How do you match the two so it works correctly ?

Locked up seat belts?

2000 Dodge Ram 1500 Transfer case leak?

How do you change car fuses?

When I turn the wheel on my Kia, their is a subtle squeaking sound, but it is in the suspension somewhere..

What gas helps start a fire and keeps it going?

Corsa still won't start?

Sunbird on the fritz...maybe?

Why is my 1988 nova acting up in cold weather?

This article contents is post by this website user, CarQnA.com doesn't promise its accuracy.