Question about 1990 Ford Thunderbird

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Should i see foam and bubbles in my coolint when i take off the radiator cap?

My coolint is evaperating,and i have to add every day. checked for leaks ( none ) changed upper and lower hose a week ago and water pump about 9 months ago. my temperature gauge reads normal while driving on the freeway but when i exit it rises above normal for a few blocks and then it stablilizes..

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  • Ford Master
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Foam and bubbles indicates head gasket problem
have a compression test done

Posted on Jan 20, 2018

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Posted on Jan 02, 2017

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Molson02536
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SOURCE: temperature gauge goes up all of the sudden

It sounds like you have air in the Cooling system and the bars leak permanent seal does not help. The sealer creates restrictions through out the water jackets and can cause the thermostat to stick. Replace the radiator cap and run the truck with the radiator cap on the first click and keep an eye on the over flow tank, refill the over flow as needed and make sure you have the heater on the highest setting to work out all the air in the system. Once all the air has worked it's way out of the system, then you can close the radiator cap to the second click to ensure full pressure is built up in your cooling system. Good luck and keep me posted.

Posted on Dec 09, 2009

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SOURCE: 2000 FORD EXPEDITION OVERHEATING....changed thermostat,radiator

yes. the impellor on these engines have a tendency to come off the water pump.First you can see if the pump is working by removing a heater hose then have someone to start the engine. if the water sprays a good, solid stream out then the water pump is good. if the water just barely comes out or not at all then the pump is weak or "bad".

Posted on Aug 13, 2011

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2 Answers

Radiator reservoir foamy


Generally, when foam exists in the radiator, you have combustion gases entering the coolant system, and the cause may be a bad head gasket or a cracked cylinder head and in some cases may be an intake manifold gasket leak. If you open the radiator cap (make sure its not under pressure) smell the air near the radiator cap opening while the engine is running and if it smells like exhaust fumes then you have the problem as I first stated.

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Check your car's exhaust pipe for moisture running out; may have a leaking Head gasket!

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What are the steps to bleding the air from the coolint?


leave cap off as car runs add fluid as needed til full you will see bubbles coming out the radiator as you fill

Dec 05, 2012 | 1990 Ford Thunderbird

1 Answer

My coolint is evaperating,and i have to add every day


you must have a leak somewhere. Your coolant will not boil unless you have a leak. Check for leak traces of fluid the color of your anti-freeze. Your radiator cap is spring loaded and with time the spring gets weak.
Check that area for leak traces. The easiest way to check for leaks is to look at your driveway. if you have a coolant leak the fluid traces will be on the driveway. Don't mistake your air conditioner water leak as being the coolant fluid. The anti-freeze coolant has a sweet smell whereas the air conditioner fluid is just plain water being removed from the air inside of your cab.

Dec 04, 2012 | 1990 Ford Thunderbird

1 Answer

My car is leaking a lot of water


leaking onto the ground? or 'Dissapearing'?

If 'Dissapearing' it is probably a blown head gasket.
to check: remove the radiator cap while cold, fill the radiator to the top. start the engine. If bubbles of air come out of the radiator cap, the head gasket is blown.

If leaking on the ground, it is most likley a split hose/radiator/pump.
fill the water up, put the cap on, and let the car idle till warm, have the bonnet open, and look for the escaping coolent.

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2001 Ford Escape. Coolant leaking from somewhere. Went through bottle of coolant in 2 days.


If there is no sign of a leak you need to test for cylinder head leaks.
Warm up the engine and remove the radiator cap. Top up the water to the neck of the filler. Squeeze the top hose a couple of times to shift any air in the top tank of the radiator. Run the engine on idle and check for bubbles it the radiator, keep it topped up to the neck. Bubbles showing means you have a head gasket problem.

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1991 Cadillac Fleetwood. The heater was working on passenger side but not that warm. Added antifreeze. Seems to be leaking it. Keep adding. gone thru 2 gallons. How do i get heat.


If you've added two gallons of antifreeze, you need to find out where it's going. Make sure the antifreeze you are adding is diluted with water in a 50/50 solution. Pure antifreeze has little freeze protection and boils quickly. If there is no visible leak, check your oil for coolant contamination. Fill the radiator and leave the radiator cap off. Put the heater controls on hottest setting, but do not turn the heater on. Start the engine and watch the coolant. If the coolant level drops, add more to full. If the coolant is flowing thru the radiator when you first start the engine, the thermostat is stuck open and needs to be replaced. If the water is not flowing, then keep an eye on it and wait for the thermostat to open. Add antifreeze to keep the radiator full. Look for air bubbles or lots of foaming in the coolant. That would indicate a blown head gasket and the reason you are losing antifreeze. If there's no bubbles, and the coolant level stays full, put the radiator cap back on and see if the heater is working better.

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1 Answer

Leaking cooling system


if fan isnt working , water most proberly evaperating when getting hot , try wiring the fan so running constant

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1 Answer

1994 jeep grand cherokee, over heats and dont get more than 3000 rpms, what you think?


I think you need to service the cooling system on this 15 year old car. But first, turn on the A/C and the cooling fan should run continuously. If not, the fan motor is bad, the fuse is blown, or the relay is defective. Also if the fan runs with the A/C on but does not run when it is not on even when the engine overheats, the thermal relay is bad. Check the water pump closely for leaks. If you see a leak at the pump it is bad and must be replaced. If you see white smoke from the exhaust or a white foam on the underside of the oil fill cap, and are loosing coolant with no apparent leak, you may have a blown head gasket. If so, have it looked at by a professional for diagnosis. If you do not think you have a blown gasket then proceed. Inspect all hoses and replace as necessary. Purchase 1 gallon of antifreeze and 1 gallon of distilled water or 2 gallons of premixed coolant. Also purchase a new thermostat. Set the heater to hot, drain the coolant, flush the system, and replace the thermostat. Pour in a 50/50 mix of antifreeze and distilled water. Leave the radiator cap off and start the engine. Keep the radiator topped off and you watch for air bubbles escaping from the radiator. When you see no air bubbles escaping replace the cap and check for leaks.

Nov 01, 2009 | 1994 Jeep Grand Cherokee

1 Answer

Losing Coolant


You may very well have an internal leak as in a blown head gasket. If you see white smoke from the exhaust and it smells sweet that is a definate sign you do. You may also notice a white foam on the underside of the oil cap and the oil level may be over full. Remove the radiator cap, engine cold, and start the engine. If you see air bubbles escaping you have a blown head gasket or cracked head. Stop driving the car until you verify this with a compression test. Severe engine damage will occur if you continue to drive this car, if the head gasket is blown.

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