Question about 2005 Chevrolet Equinox

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Loosing coolant in my 2005 Equinox. None on the

Loosing coolant in my 2005 Equinox. None on the ground. Repair shop says they can't find any problem. 3 months and about $300.00 later, during oil change, they said it could be my head gasket ($1500.-2500.00 est.). A friend of a friend says it could be the intake manifold. Both are big jobs with no guarantee. Any recommendations?

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I just dealt with this problem. Turns out that the equinox cools the tranny fluid by running it through the radiator (in a closed system). Problem I was having was that the coolant from the radiator was leaking into the transmission. The only reason they found this was because the car started shifting rough and I had them check that problem out at the same time I had them look for a coolant leak. When the technician pulled the transmission drain plug, he said it looked like pepto running out. Only way to fix was to replace the entire radiator ($800). They also had to flush the transmission to get all of the coolant out of the housing.

Posted on Jan 01, 2011

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The simplest thing to do here is to put a tracer dye into your cooling system. Use only dye that is specified for finding a COOLING system leak, oil dyes and a/c system dyes will cause problems in your cooling system. If your head is leaking, you will find coolant in the oil, in the valley pan near the intake manifold, or sometimes even a bit coming out of the exhaust. But--- coolant will burn up/off, so if it is leaking into an area that is subject to high heat, you may never see an actual leak. The dye will remain as a bright green deposit wherever your system is leaking at, and with a proper pressure test, or just with normal operation of the vehicle, you should be able to use a black light and a set of yellow glasses to find it. This is most likely going to be your mechanic doing it, not YOU, and the key here is diagnosis, diagnosis, diagnosis. Don't replace parts just to do it, force your mechanic to find the leak and show you the proof (dye comes in handy for this), and then make your decision on whether you will fix the problem. Also- you may have a heater core leak, but usually it will leak onto the passenger side floorboard, and you'd notice the carpet wet, or even smell coolant in the car. This is another possibility, but since you haven't said anything about a wet carpet or coolant smell, im betting that your leak is something under the hood. Good luck!

Posted on Nov 12, 2009

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1. If you loose the coolant very slow, it is hard to see it on the ground, moreover sometimes it leaks only when engine runs on high revs (high pressure in system). Have you inserted a whole cartoon and run for say, 10 minutes at place? 
2. A good mechanic should be able to see whether the gasket or the head itself is faulty by checking the oil. Having antifreeze instead of water it this particular case makes things very hard, because even small amount of water is seen well in oil, while coolant is camouflaged. Similarly, oil drops in coolant are hidden by the antifreeze. As for the intake manifold, we speak of the tubes which provide fuel to the cylinders? I have not heard of a manifold with liquid cooling, but it might be... Anyway, you should be aware that driving in such condition without being sure that everything is fine is likely to damage the engine severely. 

Posted on Nov 12, 2009

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Pull your dipstick. If the coolant is getting by the head gasket you are going to see a colour change to the oil and a residue on the stick. Look at the oil cap - any gummy residue?? Why do you think you are loosing coolant?? Check for proper fill procedures, I am not saying you are doing anything wrong, but without knowing the type of recovery tank on your Equinox, I will say that some fill tanks should be full, others have a fill at cold line about half way up the side. I have seen where a driver will keep filling the latter and the system will purge the excess through the overflow and he thinks he is "losing coolant".:-) There are other reasons too for a loss of coolant, none are cheap on a 2005.

Posted on Nov 12, 2009

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There would be evidence in the oil or white smoke from the exhaust if a head gasket is gone.Intake manifold?? Have a compression test done to be sure.

Posted on Nov 12, 2009

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