Question about 1991 Honda Accord

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How to tell if water pump out

Cool air coming out heater, new thermostat , new coolant, new blower and resister installed

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  • Rob U Jan 20, 2013

    Temp rises and lowers top hose hot lower hose not so hot engine seems to smoking more than usual

  • Thomas Perkins
    Thomas Perkins Jan 20, 2013

    Could be water pump.

  • Rob U Jan 20, 2013

    Thanks for help is there an on line how to like chilton reference books so I can do the work

  • Thomas Perkins
    Thomas Perkins Jan 20, 2013

    http://www.autozone.com/autozone/repairi... Here's your repair guide Rob.

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  • Honda Master
  • 14,337 Answers

Running hot if water pump bad,check heater core.

Posted on Jan 20, 2013

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1 Answer

Heater not as warm as it should be.


Well it could be a few things but i dont want to scare you so we will try the easiest one first. It could be low on coolant and that may have caused an air pocket to develop within the heater core. check your coolant levels and if needed do a coolant flush. possibly a bad radiator cap is another. the other problems could be a stuck (bad) thermostat or bad water pump.

Nov 30, 2011 | 2007 Nissan Frontier SE Crew Cab

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We just replaced the radiator and the thermastat but the needle still goes to hot


replace the temperature sending unit. Its right there by the thermostat. You can get this at any auto parts store. just need an open end wrench to change it. they do go bad(found out the hard way several years back). I hope this helps you

Jan 13, 2011 | 1999 Plymouth Voyager

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After reaching operating temp, longer than it ever


It sounds like the heater core is plugged, It could possibly be the thermostat or water pump. Have you ever had the cooling system serviced? Maybe flush the system and put in a new thermostat with new anti-freeze.

Dec 16, 2009 | 2002 Chrysler PT Cruiser

1 Answer

1992 Honda Accord cooling problems--Please help!


I smell a bad water pump.. If your water pump is bad you get very poor coolant circulation not to mention at a stand still(red light) you get less air flow to cool down the coolant. Since you have poor coolant circulation you wont get the proper coolant to heater core as well so you get less warm air threw heater. Not to mention that when a water pump is faulty and you have a thermostat it allows even less coolant circulation compared to a constant flow of antifreeze. I would have it checked. Good luck

P.S, I am assuming that your electric fans are working and you have to proper mixture of antifreeze and water.

Dec 07, 2009 | 1992 Honda Accord

2 Answers

No heat


My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!

Oct 10, 2009 | 2005 Nissan Sentra

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1996 328IS, Over heating after 25 minutes of idling,


clogged with old rad chunks
no white smoke

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1 Answer

My 2001 lincoin ls gauge goes up to the h and then come back down


you probably have air trapped in the system. Have dealer or radiator shop bleed system.

I assume your cooling fan is working.

what engine v6 or v8?

SECTION 303-03: Engine Cooling 2001 Lincoln LS Workshop Manual
DESCRIPTION AND OPERATION Engine Cooling The cooling system components include the:
  • block heater (optional)
  • cylinder head temperature sensor
  • fan blade, fan motor and fan shroud assembly
  • radiator
  • pressure relief cap
  • degas bottle
  • radiator draincock
  • water pump
  • oil cooler (optional)
  • water thermostat
The water thermostat:
  • controls the engine coolant temperature.
  • allows quicker engine warm-up.
The degas bottle:
  • provides a location for system fill.
  • contains coolant expansion and system pressurization.
  • provides air separation during operation.
  • replenishes the engine coolant to the system.
The fan blade draws air through the radiator to help cool the engine coolant.
The fan motor:
  • operates only when the engine is running.
  • will not operate when the engine is off.
The engine coolant flows:
  • from the lower radiator hose to the water pump.
  • from the water pump to the engine block and the cylinder heads.
A closed water thermostat returns the engine coolant to the water pump. An open water thermostat allows the engine coolant to flow to the radiator.
Unsatisfactory coolant materials:
  • Alcohol-type antifreeze does not provide adequate water pump lubrication.
    • has lower boiling point
    • reduced antifreeze protection
  • Alkaline brine solutions will cause serious engine cooling system damage.
The cylinder head temperature sensor provides a signal to the temperature gauge.
  • will invoke failsafe cooling.
The optional block heater:
  • electrical heating element is installed in the block cooling jacket.
    • uses a standard 110V (220V in Europe) electrical supply
  • keeps the engine coolant warm during cold weather.
The auxiliary water pump (3.9L only):
  • provides heater coolant flow boost.
  • has a secondary function of providing engine-off cooling.

May 01, 2009 | 2001 Lincoln LS

3 Answers

CHEVI LUMINA 2001 HEATER failing...might have slow dex-cool leak


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow.

If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm.

If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air.

If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted.

One or a combination of these factors is likely the culprit in your case.

Flush the heater core 2-3 times, and if the obstruction does not clear, a new heater core is required.

However in your case, a cracked head is suspected - this will give out a plume of white smoke on startup - There is no smell, carpet dampness, or abundant moisture in the cabin? (this warns of a leaking heater core)

The coolant is leaking through a gasket or crack, and entering the combustion chamber. You dont see a leak on the ground because it is being burned up with the fuel.

Good Luck, and thanks for using FixYa - A FixYa rating is appreciated!!

Jan 26, 2009 | 2001 Chevrolet Lumina

4 Answers

Heater blowing cold air


My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!

Dec 22, 2008 | 2002 Nissan Sentra

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