Question about 1987 Porsche 924

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My husbands Porsche 1987 924 is over heating antifreeze was coming out of the over flow hose. what do you think this could be? Water pump thermastat?

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Posted on Nov 17, 2009


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2007 Chrysler T&C overflow tank has pressure

Well sounds like you are overfilling the tank. Secondly you would loose pressure and probably over heat if it was your cap. Also check top and bottom hoses going to radiator after it has come to operating temp. If the thermastat has'nt opened one of them will be rock hard. Perferably it be the top hose hard. Check for leaks. Also the overfill tank is going to look low at times cause the engine heats up and water flows into the radiator and when the thermastat closes it back flows back into resorvior making it look low when it is flowing. Also need more input on why this is a problem.

May 27, 2013 | Chrysler Town & Country Cars & Trucks

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I believe its the thermastat but I will tell you what my problem is so I can get the proper analysis. I have absolutely NO heat at all. Trying the thermastat replacement is the first thing I should do...

i wish you luck but is the temp staying in the usual place on the meter... could be as simple as a heater coil. or maybe the electronic control is not changing to flow water to heater core.. check engine light on?: turn heat on off on off on off to try to get it to change flow.. good luck

Dec 10, 2010 | 1996 Audi A4

1 Answer


Maybe you didn't bleed all of the air out of your coolant systtem.
I had a very similar problem, last month, my heat would not go above 50 degrees F.

I had air in my heater core.

I put wheel blocks behind the back tires and engaged the emergancy brake.
I jacked the front of my van up so both tires were off the ground (about 3")
I removed the radiator cap, started the engine, and turned the heat on high.
I added antifreeze, until it was full.
I let the engine continue to run, as I watched the antifreeze level go back down, then I added more antifreeze.
After doing this 2 times, I squeezed and held the upper radiator hose. I did not release it.
I started pouring more antifreeze in and when it started to over-flow, I still kept pouring as slowly released the hose.
With the raditator level full, I replaced the cap and put some antifreeze in the coolant reservoir.
Lowered the front back to the ground and removed the tire blocks.
I stuck a guage in the inside vent and I now get a 125 degree reading.

Note...after I got the van jacked up, it only took me 15 minutes to get the air out of the system (mainly, because I squeezed and held the hose).

Nov 16, 2010 | 1995 Ford Windstar

1 Answer

My temp goes up when my car is idle and the ac on

If the temperature goes up when the ac is on, then there may be a problem with the circulation of coolant throughout the system. You said you changed the thermostat which is good. But, did you backflush the engine's cooling system so that maximum flow can be achieved?

On the other hand, the heat that comes off of the condenser can cause the radiator to cool less efficiently on hot days.

Does the fan immediately go on when the a/c is turned on? or is it the older style fan belt driven fan? Even, so, if it's an older style fan, the clutch sometimes go bad in them so that the fan doesn't spin as efficiently as it should.

Also, did you use 50/50 Antifreeze to water ratio coolant mixture?
If you use pure Antifreeze 100% concentration, then it can cause an overheat condition, because the fluid at this concentration doesn't transfer heat as well as a 50/50 solution of antifreeze to water.

Good luck fixing this problem.

Jul 20, 2010 | 1992 Buick Roadmaster

1 Answer

I have a mazda 626 td which I have fitted a new radiator to. Top hose is very hot and bottom hose is cold.When I undo the bleeding nut on the radiator and rev the car a little air bubbles come out, which I...

You may have a circulation problem, check this with a COLD engine, trun heater temp to cold, drain coolant, remove both hoses from the radiator, take a garden hose and put it in one of them, turn the water on, it should freely flow out the other, you may need to wrap a towel around the hose to get a bit of a seal, but it should not take much pressure to get it to flow, no flow? Are you sure the thermostat is out? Good flow? try the same to the radiator, does it flow? If both flow you may have an impeller that has come off your water pump, to test, reconnect bottom hose, leave top hose loosely connected, fill with water, start it, slowly pull the hose back, water should be flowing out with a good flow, if it isn't, you either didn't find the t-stat, or your water pump is kaput. Seems the t-stat is in an odd place on some of these, do you have a manual? look again because it sounds like a broken thermostat that is not opening, especially if your water flow test failed - no flow. Hope this helps

Apr 27, 2010 | Mazda 626 Cars & Trucks

1 Answer

How can you tell if your water pump is bad. Boxster running hot. Steam coming out of side vents. I waited and allowed engine to cool. Without starting it, refilled with antifreeze and antifreeze is leaking...

It could be either hose or the pump. Introduce no more antifreeze to this car until you have found your leak as you are just wasting your money.

You are going to have to visually inspect it for the leak. Typically if it is a pump, the pulley and the underside of the pump will be wet.

Jan 27, 2010 | 1997 Porsche Boxster

1 Answer

The heater takes longer to heat up then it used to, and when it does it des not stay heat. It blows out cool air? We have gone through the fuel system and cooling system without success. Antifreeze in...

the fuel system is seperate from heating system.check water pump the impeller could have deteriated i have seen this in another cavalier,once i removed water pump the blades that move the water were full of holes.but first make sure ther is good flow to the heater core.also hope you used a 50/50 mix of antifreeze because solid antifreeze wont heat up.

Jan 10, 2010 | 1992 Chevrolet Cavalier

3 Answers

Smell of antifreeze around car when driven, overheated

the temperature guge will be higher than normal. there may be a squealing sound which may indicate that the seals on the pump have perished. I am not sure if you have cold weather where you are, if you don't try running the car for a while to watch the progress of the temperature gauge. You may also have an airlock in your radiator??? The only real way to be sure if your water pump is fuctioning correctly is to remove it and check the seals.

Good luck

Nov 11, 2009 | 2003 Nissan Sentra

1 Answer

93 Dodge Grand Caravan antifreeze leak/drip

check it out,sounds like a waterpump ,but it could be anything,you must be using 100% to withstand -30 celcius where are you alaska??

Dec 15, 2008 | 2000 Dodge Caravan

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