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My envoy 2002 is irrepairable! each time the temperature gauge goes highm cooling water boils i fix it after few days it happens again !

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Hi,The first thing you have to do is have a cooling system pressure test performed,to find out if you have any internal or external coolant leaks.Repair all leaks.If you don't have a cooling system pressure tester Autozone rents them for free,you just pay for it,use it and return it for your money back.Check your cooling fan for proper operation.I hope this helps.Let me know what you find.Any more questions just ask and I'll try to help.Thank You for using fixya.... iluv2fish.............Ray.........

Posted on Jul 22, 2010

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I took the thermostat out of my 2002 optima but there is still pressure on the hose wats wrong


I am not sure that I understand your question or problem. All cooling systems are under pressure by design so that the coolant does not reach its boiling temperature. Since it is a closed system pressure should be equal throughout. What is happeneing?

May 31, 2012 | 2002 Kia Optima

1 Answer

Which coolant does a 2003 envoy need?


The cooling system in your vehicle is filled with DEX-COOL engine coolant. This coolant is designed to remain in your vehicle for 5 years or 150,000 miles (240 000 km), whichever occurs first, if you add only DEX-COOL extended life coolant.

A 50/50 mixture of clean, drinkable water (if the water in your area is of poor quality, it is recommended you use distilled or de-ionized water) and DEX-COOL coolant will:
  • Give freezing protection down to -34°F (-37°C).
  • Give boiling protection up to 265°F (129°C).
  • Protect against rust and corrosion.
  • Help keep the proper engine temperature.
  • Let the warning lights and gauges work as they should.
Hope this information helps

Oct 16, 2010 | 2003 GMC Envoy

2 Answers

Engine temp goes up to 230 degrees


It's actually normal for engine temps to go up to 220 deg. F or 230 deg. F in the summer time, even in normal engines that run at 196 deg. F typically.

This happened to me with no malfunctions on my 1997 Cadillac Deville, yesterday.

Actually, engines run more efficiently at higher temperatures like this.

Just make sure your coolant is topped off and that it fluctuates between lower temperatures and this high reading.

This is a normal temperature in my experience for GM vehicles.

Aug 11, 2010 | 2002 GMC Envoy

1 Answer

Temperture fluctation


Generally the temperature fluctuates due to a leak in the cooling system.

The cooling system operates similar to a pressure cooker, with everything sealed, for each pound of pressure on the system, the engine can increase the temperature above the boiling point by 7 degrees without boiling. This is why when a hose breaks, the temperature gauge generally goes all the way up & you will hear boiling if you open the hood & inspect the area as it occurs.

If you lose a pound (more or less) of pressure, even with antifreeze, due to the pressure the system is under, the temperature will rise.

So, when there is even a pin hole sized leak, a gasket that occasionally leaks, a radiator cap that isn't actually holding the correct pressure-all of these things will cause the pressure to drop & an immediate change in the temperature making it hotter and as it re-seals itself, the temp will decrease again. There are a lot of particles floating through your cooling system and these particles sometimes will plug a leak until pressure pushes it out later.

Generally a leak is iindicated by the temp gauge rising higher than ever before. To resolve this, a pressure test will be necessary unless you replace the radiator cap & find it is no longer fluctuating.

Also, this doesn't have to happen each time you drive. Seals leak when they want to & that's all I can say about that. Usually they will reach a point where they will want to leak all of the time but finding them has to be done while they are in fact leaking.

good luck

Feb 11, 2010 | 2005 Ford Explorer Sport Trac

2 Answers

2004 gmc envoy code 0128


This an engine coolant temperature fault, most likely caused by a defective thermostat, probably one that is open all the time.

Jul 17, 2009 | 2002 GMC Envoy XL

2 Answers

2001 Hyundai Accent. Heating and stalls


If the water tends to keep going down then there has to be a leak somewhere. Try also looking at the hose coming from the overflow tank and see if the hose might be kinked. You might also be blowing antifreeze out the tailpipe. Take a look and if there is bluish white smoke then you have confirmed that theory,

Jun 10, 2009 | 2000 Hyundai Accent

1 Answer

Gages


Hi again,

Did the negative battery terminal removal able to reset the instrument CPU?

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Aug 19, 2008 | 2002 Mitsubishi Montero

1 Answer

Have you repaired the temp gauge issue


I have a 2002 Mitsubishi Montero Limited. The other day the temperature gauge went from normal temp to Max HOT. The radiator is still cool enough to touch, it is not boiling over, and there is still coolant in the resivour. The gauge would go back down to normal in a few minutes, but now it immediately climbs to Max Hot within 1-2 minutes of turning the car on.

Jul 22, 2008 | 2002 Mitsubishi Montero

2 Answers

Over heating, and no AC


Cooling Fan Malfunction. Your radiator fans are most likely not working. That's why the temperature is OK when you're driving full speed and the wind is cooling your radiator. You need to check and/or replace your cooling switch module and radiator fans (most likely it's the cooling module). If you were sitting idle or in stop-n-go traffic for an extended period of time, your car WOULD overheat because the fans aren't kicking in cooling your radiator - then you would see all of the cooling system water spill out of the coolant reservoir, before this would happen your temperature gauge would go to the red and the digital dislpay would flash a thermometer (indicating you're about to overheat in 2 mintues). I hope this helps someone out there - Yes, it happened to me in the middle of nowhere.

Jun 25, 2008 | 2002 Audi TT

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