Engine overheating

Did you ever get your overheating problem resolved? I have a similar problem. My 2001 s-type overheats, but I can drive the vehicle forever without overheating as long as I have the heater on?

2003 Jaguar S-Type

My 2003 Jaguar S type is overheating when I drive it for about 15 minutes or more. When I turn off the car the engine is cool and the fan is very loud. I took it to the mechanic and he said that one hose is running hot and the other cold. He is replacing the thermostat and says that is probably the problem. What do you think?

Engine Cooling problem V8 Two Wheel Drive Automatic 143000 miles

Hi,

My 2000 S-Type Jaguar is getting hot randomly. It will get hot, the fan kicks on, and it cools right back down. I can let it idle forever and it will not get hot. But, out of the blue it gets hot. There is also a noticable smell of coolant. I have not seen that it is leaking anywhere. The fluid levels are fine. What is the problem?

Thank you,

Joe

Hey,

It is hot outside, but I have only owned the car for a short while. I can't say that it gets hot more often with the a/c running. It has gotten hot with the a/c running and without the a/c running. This has only been happening for a couple of days. I followed the guides you gave me and sure enough there is leak near the top of the radiator can you give me diagrams for my car?

Thanks for the quick response.

Joe

Hey,

Thank you. I will do the work it and see if it is working properly. Thanks again for your time. I love this site!

Joe

Had my Jag 2000 to 3 fixit shops (2nd was the dealership at which we bought it)

Problem began during a long summer road trip and escalated to burning smell and smoke. Warning sign was that the cooling fan stayed on way too long.

1st diagnosis at local mechanic on trip - coolant levels too low. Fixed.
Problem continued and got worse. Temperatures too high. Burning smell tho fluid level was perfect.

2nd diagnosis - thermostat failure. Fixed/replaced. Problem continued. Worse still. A few days later, emergency lights on dash appeared saying STOP IMMEDIATELY. CAR IN IMMINENT DANGER, (and me 20 miles from anywhere) Car went into LIMP MODE just long enough for me to get it home. (Frightening)

3rd diagnosis. SUCCESS, I hope.
There's a SMALL SENSOR BELOW THE ACCELERATOR that controls the flow of fluid to cool the engine. Replaced that. Much improvement but still not perfect. Think some damage was done during the long wait to identify problem and necessary cooling fluid was withhheld from the engine by the faulty sensor.

I own a 2000 Jag S-type w/ 4.0- recently overheated on a road trip. I have changed thermostat, flushed system, properly bled air from system, even pulled internal parts from old thermostat to ensure coolant flow through engine. Still within 10-15 minutes of idle temperature gage shoots to how and warning come on dash. I do not see water in oil and the car runs perfect. The fan comes on when it should and adjusts as the temp increases. Also, as soon as I shut car off, wait 3-5 minutes and bleed pressure off expantion tank the temp is back to normal operating range. Is this a major issue with the engine or is it possible to save without selling my house to cover repairs? Thanks!

Not sure. I know she was driving when it went hot initially.
I have not tried to drive it since it overheats idling. I flushed the engine block and radiator with only little amounts of debris showing. The radiator seemed to have good flow through the radiator itself. But I am puzzled by the fact that relieving the pressure on the expantion tank decreases the temp. Also, as stated I have no thermostat center to restrict water flow at this point. "Hope this helps."

Also, did not try to run AC. Hoping to avoid a costly expense if at all possible.

Two months ago, heater quit heating. This week I noticed the engine started running hot, all the way on the gage. Car had set up for two weeks without running. Weather down to freezing temperature.
What is wrong? Also where is the thermastat located, explain where, please

Definately running hot. Can do a accurate temp check of water this evening if you like.

When my 2000 stype was overheating I replaced a cracked coolant resevior, but more importantly noticed the fans weren't kicking on. I replaced the fuse and problem solved!

Had the water pump replaced about a year ago. Is it possible that it has gone out again? However, there is no water coming from the "weep" hole or any other indication of failure.