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Old 09-11-2006, 03:07 PM
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Quad four using coolant

Hope somebody can help me out. My son's '95 Quad four, auto, Grand Am has taken to using or leaking coolant. He drives it to work (about 5 miles one way) and says the temp gage climbs to hot, low coolant light comes on, and it leaks coolant. He has never bothered to look to see where the coolant is coming from when it does leave a stain under the car. I can't get the darn thing to do it. I drive it and the temp gage stays in the middle of the range. I let the thing idle for twenty minutes and the gage stays in the middle and the fan never comes on. Car has 130,000 miles on it. No white smoke in exhaust. No visible leaks around engine. But the car is using coolant! Anybody got any ideas? Thanks in advance.

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Old 09-11-2006, 03:44 PM
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Mine did that and 2 days later the head gasket went out. Keep an eye on the oil for water.
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Old 09-11-2006, 03:56 PM
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I would quit driving it asap, those engines were notorious for bad head gaskets. The coolant may not come out the exhaust but it will end up in the oil. Get a new gasket and replace it before you loose the bottom end. Gm would not recall them at the time, if the gasket went they would replace it. The whole fiasco gave a great little engine a very bad reputation.
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Old 09-11-2006, 04:03 PM
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My son had one that was exhibiting the same problem, and I tore it down and replaced the Head Gasket (had the Head pressure tested, valves gound, etc.), put it back together and it still did it. Crazy as it sounds, it was the Water Pump-
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Old 09-11-2006, 04:47 PM
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Quote:
Originally Posted by 35WINDOW
My son had one that was exhibiting the same problem, and I tore it down and replaced the Head Gasket (had the Head pressure tested, valves gound, etc.), put it back together and it still did it. Crazy as it sounds, it was the Water Pump-
Yeah.........those water pumps being driven off the timing chain and being inside the front cover really helped............

If the pump bearing went, the coolant mixed with the oil....which is real great for engine bearings.
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Old 09-11-2006, 04:58 PM
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My wife had a '97 Olds with the Quad 4 with coolant leaking. It cost $800+ to have the water pump replaced.

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Old 09-12-2006, 07:08 AM
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1.21 giga-watts???!!!!
 
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Thanks guys. I have a feeling I should probably replace the head gasket and while I am at it replace the water pump. That should take care of it. I am puzzled as to why the fan doesn't kick on yet the temp gage stays steady. Anybody got any ideas?
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Old 09-12-2006, 07:16 AM
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I don't think you need to replace that Head Gasket just yet-try the Water Pump. It is a LOT easier to replace (I hate working on DOHC engines!)-
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Old 09-12-2006, 10:37 AM
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Owned a 92 Grand Am with a quad 4. Got a letter from Pontiac stating that they know of a problem and one of two things could happen. One, the head might crack. If it does crack (before 90K miles) they would pay for the repair. If the head "just" warped, too bad so sad. Basically they knew that the majority would warp and not crack, and those that did would most likely do it after 90K. Cost me almost a grand to have it fixed. But....the car went another 75K before the head went again the engine gave up. Just my $.02

Barry
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Old 09-12-2006, 02:24 PM
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Both the head gasket and the water pump are no fun on those quad fours.
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Old 09-12-2006, 02:32 PM
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A coolant system pressure test should find the problem.
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Old 09-13-2006, 02:54 PM
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Well I sold the car so I don't know if it was the head or the water pump but I wasn't going to fix it with all of the other things that went wrong with the car.
Good luck to you. They are good little engines when they are running. If I had the time and money I would put one in my car in a heart beat.
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