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Coolant leak only when cold - Cars & Trucks

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Use a pressure tester on the cooling system when cold to find the leak quickly.

Posted on Nov 05, 2012

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Posted on Jan 02, 2017

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My 2005 equinox is leaking antifreeze but not overheating and it has antifreeze in it but only seems to do it when it's cold outside.


There many ways to find out a leak . Place a large piece of paper Under truck let it rest overnight . you will find out where the leak is .. like front ,or rear or left or right.
Another way is with dye that color antifreeze and with blacklight you will see the leak
And if you suspect where it leak with foot powder in spray can ...spray the area with it you will see the trace of antifreeze
hope it help

Jan 11, 2015 | 2005 Chevrolet Equinox

1 Answer

Will a leak cause the radiator fan relay curcuit to malfunction on a 2003 jeep liberty 3.7


a leak in coolant system will cause air pocket in the coolant system around the engine coolant temperature sensor.coolant sensor is a thermistor in which when hot cool cause it resistance decrease which affect the voltage from sensor to pcm which will cause engine coolant to turn on.if coolant level okay,check coolant fan fuse and relay, if all is good,engine coolant temperature sensor could be bad or have vechicle code scan for pcm problems it control the coolant fan.fill coolant system to correct level make sure engine coolat reservoir is at full cold mark and not empty.fill coolant system check for leaks,refill coolant overflow jug back to full cold mark dont over fill, if coolant overflow stay empty you have leak either its leaking or you have radiator hoses or radiator leaking coolant.when coolant overflow jug run dry it cause air get in coolant system causing overheating problems.

Jul 25, 2012 | 2003 Jeep Liberty

1 Answer

My Dodge Stratus 2005 is leaking coolant. No trace to be found. I discovered last week that the whole coolant reservoir was empty. Yet the car's temperature was at normal level. There are no trace


Look in the radiator in the morning when car is cold take off the cap if it is full then look at the reservoir and make sure you see to lines on it one you fill to when cols the other you fill to when how it will say hot and cold fill lines fill yo cold when it is cold then next day check and see when cold if it is at the same mark

May 04, 2017 | 2005 Dodge Stratus

2 Answers

I have a 2001 buick lesabre from 2days ago it was getting cold , i founnd leak the coolant but after driving for a while leaking stopped but it get cold coolant leak again? should i replace something or...


When the motor heats up it is expanding thus stopping the leak. You need to have it checked by someone or put in some radiator dye from your local auto parts store and use a black light to determine where the leak is. Is is not hard to warp a hot engine lacking coolant and then we are talking major work to fix it. You could use some radiator stop leak found at your local auto part store such as a product called BARS LEAK which could cure the problem or make it worse by plugging the flow of coolant.You really need to know where the leak is at and get it fixed.

Nov 20, 2011 | 2001 Buick LeSabre

1 Answer

How do i remove engine coolant cap on 2001 cadillac dhs


WAIT UNTIL YOUR ENGINE IS COLD,YOUR RADIATOR PRESSURE CAP IS LOCATED ON THE COOLANT OVER FLOW RESERVOIR, THATS WHERE YOU ADD COOLANT WHEN COOLANT LOW,YOU POUR COOLANT IN THE OVER FLOW RESERVOIR UNTIL COOLANT LEVEL REMAIN AT FULL COLD MARK DONT OVER FILL OVER FLOW RESERVOIR, WHEN COOLANT LEVEL STOP DROPPING WHEN ADDING COOLANT AND COOLANT LEVEL STAY AT COLD MARK ON THE RESERVOIR YOU RADIATOR HAS THE CORRECT COOLANT LEVEL IF COOLANT LEVEL KEEP DROPPING CHECK FOR COOLANT LEAKS AROUND RADIATOR AND THE TOP AND BOTTOM RADIATOR HOSES, LOOK FOR COOLANT LEAK AT WATER PUMP GASKET OR SEAL OR LEAK AT WATER PUMP WEEP HOLE IF YES REPLACE WATER PUMP.

Oct 23, 2011 | 2001 Cadillac DeVille

2 Answers

Coolant/stop sign coming on


It sounds like your thermostat is not opening. You can take the hose off which contains the thermo and remove the thermo. Now there should be nothing keeping the coolant from circulating except the radiator which may be pluged.

You now will not get heat but this will get you to the garage. Let me know it this does not work,

Tom

Jun 21, 2010 | 2001 Volkswagen Golf

1 Answer

My 1999 ford windstar is only blowing cold air and no heat


possable problems:

1. coolant leak (level too low to fill heater core)
2. headgasket leak forcing the coolant out of the overflow.
3. stuck thermostat.
4. bad water pump. if the impelers are broken, coolant wont flow.
5. HVAC malfunction. system may think you selected cold or is unable to move diverter. maybe a fuse,solenoid or vaccum leak? (hvac controler uses vaccume controled soleniods)
6. airlock. if you have resently changed your coolant, you may need to repeatedly squeeze the heater core hose to help force out the air.

May 19, 2010 | 1999 Ford Windstar

1 Answer

Heater blows cold air when i turn it on blows a little warm air then it is cold


It sounds like you may be leaking coolant and are low on coolant. Low or no heat is a sign of the coolant being low. Vehicle can leak coolant from multiple locations. Top off the coolant level and see if the heat returns or gets better and get back to me.

Other causes could be a clogged heater core, Temperature door motor/door not moving, cylinder head gaskets, engine block, thermostat.

Jan 28, 2010 | 2004 Chevrolet Impala

1 Answer

Coolant leak on 96 olds ciera 3.1


Head gasket. The reason for the cold then hot readings is the cooling system is getting gas bound by exhaust gases. A simple intake leak would just make you loose fluid, but wouldn't cause the other symptoms until the coolant was very low. Which leads me to, is the coolant full? The head gasket most of the time will not leak coolant into the oil, but instead coolant will go into the combustion chamber, and exhaust gasses will go into the coolant. You don't see any white smoke until the leak gets extreme. Then shortly after that the engine hydro locks from too much coolant in the combustion chamber. There is a tester that will test your coolant for CO gas. That is the proof of a head gasket leak.

Feb 09, 2009 | 1996 Oldsmobile Cutlass Ciera

1 Answer

1996 Jeep cherokee, leaking coolant when cold/ hot ok.


waterpump houseing/shaft seal is on the way out hence the water/coolant, running along the block. when hot the seal does so, when cold and depressurising seal doesnt.

Jan 25, 2009 | 1999 Jeep Cherokee 4WD

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