Overheating

Ok thank you.I dont think it will make it to car shop tho

I have change the motor, the transmission, clutch fan(factory), water pump, raidator, thermostat And its still overheating! Someone please help. I have pretty much have a brand new car under the hood but my car is overheating I dont get it

What size engine do you have?

Have you check the temperature sensor?

Also, Chevrolet put out a bulletin to reprogram the PCM because of this.

This is the post.

Condition
Some customers may comment on higher than normal engine coolant temperature gauge
readings when operating the vehicle in very high outside ambient temperatures, and in
stop and go or slow moving traffic.
Cause
Reduced air flow across the radiator and preheated air from stopped or slow moving
driving conditions from traffic congestion may result in normally higher engine coolant
operating temperatures as indicated by the temperature gauge.
Correction
Technicians are to reprogram the PCM with an updated software calibration. This new
service calibration was released with JIS satellite data update version 73 available July 7,
200t As always, make sure your TECH 2(R) is updated with the latest software version
This new calibration win cause the PC?SÃ to command small amounts of additional fan
engagement to control engine coolant temperatures and gauge readings closer to a
customer perception of normal.

A Tech II scan tool will do this, if you cannot get access to one, a dealership will have this. Try this first and let me know.

Sean

Around how should that cost?

V6 4.2. The water in the radiator pretty much evaporates.

It shows to be warranty work. Hopefully it should be free. If not, it shouldn't be more then a hundred dollars for them to hook up the scan tool and reflash it.

Sean

If you are not seeing any radiator fluid leaking, then it has to be going through the engine and being burned. How much coolant are you losing, or how much are you having to add? If it starts to overheat, don't drive it. You don't want to have to replace the engine again. Did you change the engine out or have someone else do it?

Sean

Did you replace the engine yourself or have someone else do it?

Sean

Over the last year the temp gauge would climb(creep) to a temp that we hadn't seen before. (My wifes car). Since the car is just over 5 years old and I hadn't done a coolant flush, I had one done prior to vacation hoping that might solve the problem but it didn't, in fact it's a little worse. Prior to the coolant flush there was never evidence there was any coolant leakage. I blew out surface of the radiator, belts are new, etc.
The radiator fan moves freely but after watching operation it seems that the fan is a little slow to come on and after a short ride and a restart in warm weather is also slow to come on and if the A/C is on causes short cycling of the A/C compressor. (High head psi?) I understand the the fan blade is controlled by an electronic clutch system. Is this driven to engage on temp rise and also signaled to disingage? In any event has anyone had this problem

Hello, I have an 02 trailblazer and presents this problem: when I start the engine the fan clutch engages and it blows 100% (a little noisy), then when temperature rise up until 75 °C, it desengages until the engine comes overheated (about 120 °C) and engages again, but its too late to cool the engine. Why is this happening? It ´s the thermostat wrong? Or the fan clutch?
Besides, I checked coolant level, looked for leakage and everything looks fine, I went to a mechanic and he said that the fan clutch was damage, but I dont believe him because it works, not when I need it, but it engages and disengages.
This occurs when I'm travelling or in hot days.

I have an 02 TrailBlazer with 142,000 miles, that is running hot. First of all, I added some FiberLock to the radiator to stop a leak that was coming from the area near the a/c compressor. The engine was not overheating before I added the stopleak. Now it is running about 220+ while driving. Setting idle it stays around 190. I replaced the fan clutch and flushed the cooling system and filled it with fresh 50/50. I am suspecting a clogged radiator due to the stopleak I added. My biggest fear is a blown headgasket. The vehicle runs and idles great. Oil on the dipstick looks good. I would appreciate your opinion. Thanks!

I have a 2002 chevy trailblazer I can drive it for a week and then it starts to overheat I have replace everything but the radiator what could be wrong with it.

I replaced the fan clutch and thermostat and it still overheats. I do not want to spend another $200.00 when it could be something simple and I am spending all this money.