Question about 1990 Honda Prelude

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Car overheats in less than 5 minutes causing the overflow to explode and blow water. Turning on heater does not work.

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  • J-Raw Aug 07, 2008

    after idling in park after about 5 minutes or less, engine overheats with water coming from coolant resevoir area. but my daughter says she has to get a closer look to see exactly where the leak is originating from in order to get an accurate diagnosis to me(she lives in Tampa & I live across the state on the east coast). so, nothing has been done yet to physically resolve the problem.



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I have a 1990 prelude and had that same problem. it ended up being the head gasket (and i think the head may have also had a crack in it) on my car, i ended up just having the engine rebuilt.

sean h

Posted on Oct 23, 2008

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A clogged radiator or thermostat will produce the same results.Replace both.

Posted on Jul 27, 2008


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What is causing the heater in my 2002 GMC Sierra to blow cool air when in idle? It sometimes takes 15 minutes or longer to blow warm once I'm driving but it still doesn't blow hot, just a little warm. ...

It could be a few things. First try to see if all of the vacuum lines are connected. It there is a leak the system will not work properly. It could also be the heater switch causing the problem.

Jan 08, 2015 | 2002 GMC Sierra 1500

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Water bubbling out overflow

Did you bleed the air out of the cooling system?? This is a must or it will overheat.

Mar 20, 2014 | Oldsmobile Alero Cars & Trucks

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Pontiac aztek overheating and only blowing cold air

check coolant level,thermostat stuck close,something is not right.

Mar 16, 2013 | 2002 Pontiac Aztek

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My 2001 beetle is overheating, leaking coolant, no heat in car. The coolant is leaking from overflow container on the passger side. I changed all the hose but dont know why its leaking from overflow...


when the car overheats, is there still water in the radiator?

If there is water in the radiator and the car overheats, then it means there might be some dirt or blockage in the radiator or condenser.

When the car is on the motion, air passes through the front and assists the fan to cool the engine. There are situation whereby air doesn't have free flow because of blockage in the radiator and condenser. Dust and debris can cause blockage. If this be the case, have your radiator washed thoroughly and cleaned.

If there is no water in the radiator when the car overheats, then there is a probably a leakage from the water pump. Or maybe your fan isn't blowing properly. The fan might be blowing weak air.

The above are what could cause your engine to over heat.

So start the check from the radiator. Poor water into the radiator, wait for some minutes, look under the car and observe if water is going to leak. If there is a leak, it might be from the water pump or a leaking hose.

If water from radiator has no leak, have your radiator washed and clean the condenser has they might block air that is suppose to cool the engine.

Also, make sure your fan is blowing properly or well enough to cool the engine.

Make sure you have the above checked thoroughly as they are the major causes of problems like this.

This overheating problem could lead to a burnt gasket and this can dry the engine oil which will eventually knock the engine. So have this problem fixed to prevent further damage that will cost you more money.

Lastly, remove the hose that connects the radiator to the engine, water from the engine will come out. Pour water into the radiator, the water will flow through the hose down to the ground. Do this severally. Now connect the hose back to the engine, pour water into the radiator. Start the engine, the water in the radiator will reduce, add more water till radiator is full.

In summary, the major cause of over heating problem is from the radiator, fan, water pump, blockage in the hose, and dirt in in/on the condenser. These are area you need to concentrate on.

I forgot to mention that the acceleration meter or engine meter on the dash board shouldn't be more the 5. It should be below 5. If it is above 5, it can cause overheating. I hope you understand what I mean.....


Nov 10, 2011 | 2001 Volkswagen Beetle

2 Answers

Truck overheats and only cold air blows out of heaterf

Sounds like low on antifreeze...or not circulating ..bad water pump...

Apr 28, 2011 | 1998 GMC Yukon

2 Answers


Your heater core has no idea if coo or hot water is passing through it. Either it flows or it doesn't. Run the engine till it is at normal operating temp with the cap removed and the front end jacked up on the corner where the fill is. After it reaches operating temp, turn it off, wait about three minutes and start it again. Turn the heater on high. Add coolant till it's full and let it run. It may overflow a little a few times but should not overheat.Make sure that you are adding a 50/50 mix as straight antifreeze will boil at a lower temp than does water. If you have any bleed ports on the engine you can open them if necessary. If the radiator is flowing properly everything should return to normal.
A partially obstructed radiator can appear to flow normally as the coolant goes around the restricted passageways. turning the heat on will never cause an engine to overheat even if it was totally plugged. Be sure there are no external obstructions as well (bugs or leaves packed into the A/C condenser or between the condenser and the radiator. It is sometimes possible for a head gasket to allow compression gasses to enter the cooling system. it will first fill the heater core, then push water out of the cylinder head passages. You can have a hydrocarbon test done at any shop to find out if this is happening. Your original problem was an overheat. Even if it was due to another problem, it can cause a gasket to fail or a cylinder head to warp or crack.
Try what I said and if that fails have the test done.
Good Luck!!

Feb 03, 2010 | Chevrolet Malibu Cars & Trucks

2 Answers

Overheating, guage not over 1/2 mark, overflow smells like exhast

Have you tried running car from cold, with rad cap off, & heater turned on, coolant topped up, an inch or 2 from top of rad? Let it run up to operating temperature, cooling fans kick in & out 2 or 3 times, and top up coolant as needed, then put rad cap back on, & fill return bottle up to mark. There may be a worse problem, but bleeding system as I have described, ensures all air out of heater core & cooling system, which has been cause many times before on all makes & models of vehicles. Especially when no heat situation. Let me know if it helps.

Jul 12, 2009 | 2000 Jaguar S-Type

1 Answer

Car drove great one day but the next day it started overheating after driving about 5-7 minutes. Had the thermostat changed, the coolant reservoir and cap changed, coolant changed twice, hoses checked. ...

ok, is it losing fluid? check the floor board by the passenger seat, up under the dash, is it wet? Your heater-core may be shot. The core is tucked up behind your glove compartment. If it's plugged, water won't circulate and won't be able to be cooled, causing it to overheat.

Apr 15, 2009 | 1986 Ford Taurus

2 Answers


did you bleed air out coolant. if you did check engine oil when engine cool .could have a blown head gasket. if it look like milk shake . head gasket leak . reason blow no heat check see heater blower motor working.if yes . heat control unit or heat door not open in dash vacuum line to heat door actutator could be leaking.

Mar 23, 2009 | 1999 Pontiac Grand Am GT

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