Question about 2002 Buick Rendezvous

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Temperature gauge keeps going up to high, white smoke from the exhaust, no antifreeze being lost though

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Does the exh have a particular smell? something is causing the smoke, oil, coolant?????. intake manifold gaskets are a problem on this model.

Posted on Sep 24, 2009

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I would also check for a clogged cat convertor. They will make the motor run very hot . Check for little or hardly any exhaust coming out of the exhaust pipe. Another problem with these trucks is the thermostat sticking. I had that happen 2 times. Take yours out and check with a pan of water on the stove and a thermometer just to make sure it is operating in the proper range.

Posted on Nov 10, 2013

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White smoke usually indicates either anti freeze entering the combustion chamber via head gsket or cracke cylider jacket or in older car a broken transmission modulator, the reason for this was that the transmission modulator used vaccum to operate the modulator and when the rubber diaphram inside the modulator ruptered the transmission fluid woud leak past the diaphran and get drawn throught the vacuum line uo into the motor, however on newer cars there is no such modulator it is all electronically controlled. Keep in mind even a small amount of antifreeze entering the combustion chamber may produce a good deal of white smoke, keep an eye on the coolant level over the course of weeks not days to determine if it is or is not using up antifreeze.

Posted on Sep 24, 2009

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If the temp gauge is at normal, then what makes you think it is overheating? Are you experiencing water being forced out of the cooling under pressure? That is what makes some think the car is overheating. White smoke from the pipe can be normal, but only for a short time after start-up. If you smell the exhaust and can smell an anti-freeze odor in it, then you probably have a blown head gasket, cracked head, or cracked block. This can cause over-pressurization of the cooling system and coolant overflow. Usually, overheating accompanies this issue and is normally the original cause of it as well.

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Let it cool down, then, open the radiator fill cap and add coolant, being careful not to spill any. Then, carefully look for any leaks. Once the leak has been located, replace whatever is causing it, re-fill again and start the engine and re-check everything. It is OK to use water for testing. Once you are satisfied that the problem has been corrected, drain the system and replace the thermostat (they become unreliable after an overheat) then re-fill the system using antifreeze. While re-filling keep the heater on high heat to remove trapped air. Use enough antifreeze to restore a 50/50 mix (they sell little ball type testers for under $5.00). It's good to be exact but don't drive yourself crazy getting it perfect...close is fine.
If after the repair is finished you see any white smoke from the tailpipe then you have blown your cylinder head gasket (big job) Hope that's not the case!!!
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The temp gauge is readind high(H)


Check exhaust for any coolant burning (white smoke) ALSO check the coolant bottle for exhause gases (bubbles) the exhuast gas is very hot and makes the coolant temp rise. Check coolant level. Check the coolant temperature sensor, it could be the fault.

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White smoke from Exhaust


hardly likely the exhaust job would cause that, but yes it sounds like you got a blown head gasket. badl lock stricks hmm! also preasure test cylinder head for leaks

Jul 22, 2009 | 2005 Renault R5

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Exhaust smoke white


You could have a head gasket problem, Check your oil level and see if it's high and also check it for antifreeze. If there is antifreeze miked with your oil it would seam mikly and check your antifreeze level too if it's gone down. Good luck and keep in mind that antifreeze is corrosive the internal bearing in your engine.

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