Question about 2006 Infiniti G35

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The car overheated and coolant came out of the reservoir while my wife was driving home. I've checked it and can find no leaks. Would it be the thermostat or the pump?

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Most likely the thermostat, pumps generally leak to let you know they have gone bad. They won't always leak but most of the time they do. Just take the thermostst out and run the engine and look in the radiator and check for circulation. If there is good flow in the radiator then the pump is good.

Posted on Mar 17, 2011


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Car overheated...reservoir bone dry after coolest boiled over. Can I replace coolant n continue to dry.

replace coolant into reservoir and drive with heat on and keeping a close eye on temperature to either get home or to a safe location then check for reason for overheating

Jul 11, 2017 | Cars & Trucks


Vehicle overheating tips

If your vehicle engine coolant temperature gauge indicates overheating, if you experience a loss of power,or if you hear a loud knocking or pinging noise, the engine has probably overheated. You should follow this procedure............

Pull safe off the road, stop the vehicle and turn on our emergency flasher. Put the transmission in "P" (automatic) or neutral (manual) and apply the parking brake. Turn off the air conditioning if it is being used.

If coolant or steam is boiling out of the radiator or reservoir, stop the engine. Wait until the steam subsides before opening the hood. If there is no coolant boiling over the steam, leave the engine running. CAUTION: To avoid personal injury, keep the hood closed until there is not steam. Escaping steam or coolant is a sign of very hing pressure.

Visually check to see if the engine drive belt (fan belt) is broken or loose. Lock for obvious coolant leaks from the radiator, hoses, and under the vehicle. However, note that water draining from the air conditioning is normal if it has been used. CAUTION: When the engine is running, keep hands and clothing away from the moving fan engine drive belt.

If the engine drive belt is broken or the coolant is leaking, stop the engine immediately and call your mechanic of assistance.

If the engine drive belt is okay and there are no obvious leaks, you may help the engine cool down more quickly by running it at about 1500 rpm for a few minutes with the accelerator pedal lightly depressed.

Check the coolant reservoir. If it is dry, add coolant to the reservoir while the engine is running. Fill it about half full. CAUTION:Do not attempt to remove the radiator cap when the radiator are hot. Serious injury could result from scalding hot fluid and steam blown out under pressure.

After the engine coolant temperature has cooled to normal, again check the coolant level in the reservoir. If necessary, bring it up to half full again. Serious coolant loos indicates a leak in the system. You should have it checked as soon as possible at your mechanic's workshop.

Good luck.

on Nov 08, 2010 | Toyota Pickup Cars & Trucks

1 Answer

Car overheating

You may have a blown engine head gasket. Check your oil to see if it is milky because water is getting into the oil, and check the water to see if oil is getting into the coolant.
If you have either of these, you may need to have a new head gasket for the engine, and hopefully you do not have a cracked engine head.
This will require a fair bit of work to fix correctly. Your local garage or mechanic may be your next call.
There are some products you can use in the coolant for either of these, but it is only a temporary fix.

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2000 Mazda MPV Engine overheating

Head gasket is bad / leaking.
adding fluid on a regular basis is the first clue.
The coolant is seeping into the combustion chamber via a bad head gasket... and running out the tailpipe.

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1 Answer

Coolant loss no leak


Check compression. If the leak is internal, then the most common cause is the head gasket. Water (or coolant) leaks internally through the worn head gasket reaching the cylinders where it gets vaporized. Symptoms are coolant fluid level going down, bad performance, loss of compression, overheating, white smoke because of vaporized coolant from exhaust, traces of fuel in coolant reservoir etc.

If head gasket is Ok and there is no overheating, then the leak is external. Check pump, radiator and coolant lines.



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1 Answer

I have a coolant leak that seems to leak only when my wife drives to work, i pressurized the cooling system and no signs of leaks, pressure steady, coolant reservoir at proper level, i"m confused...

perhaps it has more to do with temperature than mere pressure? figure out how far your wife has to drive before it leaks, drive half that distance away from your house and turn around. by the time you get back home the leak location will be giving itself away. note whether your wife runs the A/C, with the parking brake on, or anything else which will affect the temp under the hood.

good luck

Jul 22, 2011 | Chevrolet Suburban 1500 Cars & Trucks

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My wife mentioned that the control panel had a big red warning STOP! and mentioned something about check coolant? any thoughts? besides the obvious, checking the coolant level? i took it for a ride and...

The a/c should throw any warning except not be blowing cold air if leaking. The coolant/radiator light no most cars is simply the reservoir is low or the sensor is bad. The car wont light up a warning or can tell if coolant in the radiator is low, only if it's overheating form the coolant temp sensor to the ECM. Check all fluid levels. Check cooling system for leaks and if you find fix immediately, will cause major problems later and will start with constant air pockets in the system.

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1995 Volvo 850 Overheating

head gasket is blown

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Coolant leaking from reservoir cap in a 2000 ford taurus.

no your cap is set to release that pressure by a spring in the cap check the reservoir for the o-ring it could be bad or missing

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I guess the burning question is , where is the coolant going.
Is this a 4.3 engine? How many miles does the vehicle have?
Has the intake gasket been changed?
I'm guessing a can of "Bars Leak" may cure your problem.
Let me know.

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