Question about 1994 Chevrolet Lumina

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Where can i find a free diagram showing how the cooling system functions/ water flow direction, nothing specific as to what i need comes up when i search the net i get everything but what i'm looking for, this is for a 1996 chevy Lumina 3.1. Thanks for your help!

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  • Chevrolet Master
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You can find an basic explanation of automotive cooling systems here. Please note that there are several pages (look for the Next Page link). The third page has a nice, interactive motion graphic.

Posted on Dec 08, 2008

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Posted on Jan 02, 2017

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1994 dodge dakota has had cooling system backflushed, and it takes a good while for heat. I have noticed the cooling fan starts running quickly after truck has been turned on. Even in cold weather...


I am not a fan of back flushing as it tends to put muck in places that are normally free to flow. The system is designed to flow in one direction so if you need a radiator clean out replace the radiator as only the flowing cores will clean .The blocked cores will still be blocked. Run fault codes and look for cooling fan sensor problems . Check that the thermostat is not blocked from gunk as the engine may be heating water -turning on the fans --but the water is not circulating

Sep 22, 2013 | Dodge Cars & Trucks

1 Answer

Any diagrams avaialable to show 2001 altima thermostat


see pic below.

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procedure:
  1. Drain the cooling system.
  2. Disconnect the negative battery cable.
  3. To complete removal, refer to illustration.
  4. To install, reverse removal procedure.
  5. Install thermostat with jiggle valve or air bleeder at upper side.
  6. Apply a continuous bead of liquid gasket to mating surface of water inlet.
  7. After installation, fill the cooling system and run engine for a few minutes. Check for leaks.


Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are genericinstructions. If you get stuck or need specific instructions for your car,please get back to me

Sep 04, 2011 | 2001 Nissan Altima

1 Answer

Need to know which line goes where on tha radiatior comeing from transmission, need diagram showing hook-ups


They should only fit one way. Since this system is flow through they can hook up either way. If you have an external cooler the routing is simple. One line from trans to radiator, out of radiator to cooler, out of cooler back to trans. If no cooler, to rad and back to trams. As I said there is no specific direction.

Oct 31, 2010 | 1984 Ford F 150

1 Answer

Water not leaking any where but the water runs out the over flow


Humm, well, I suggest that you pressure test the cooling system and the cap, test also for exhaust in the cooling system.
What is key is when, exactly, the water runs out the over flow, and I need that to direct where to go next. if is happens before the engine is warm, can be compression leak into cooling system, if it happens when it warms up, can be overheating, thermostat, leaks, restrictions, plugged rad, and the like are usual areas to investigate.

Oct 29, 2010 | Oldsmobile Alero Cars & Trucks

1 Answer

How to check if vw 1996 microbus radiator is


You must remove the bottom rubber hose from the radiator, and also the upper hose. Extract the radiator out or simply flush the radiator in reverse direction of water flow. If the radiator is clogged you can try to clean inside (chemically) or replace it. Flush the cooling system in reverse direction of water flow. Refit all in reverse order and after that purge air out of cooling system.

Dec 05, 2009 | 2005 Volkswagen Microbus

1 Answer

Have a water sounding noise coming from the dash when accelerating


It sounds like you have air in your cooling system, Check your coolant level and add if your low. Fill the radiator if your low on coolant and the over flow tank with GM Dex cool with 50/50 mix of water. open the radiator cap to the first click to allow the air to work it's way through out the system and out through the radiator cap and in to the over flow. Once the engine cools down, the coolant in the over flow tank will flow into the radiator, so keep an eye on the over flow tank and refill to the full mark as needed. If you have not flushed out the coolant system, you may want to. The GM Dex cool has a life expectancy of 5 years or 150.000 miles, and should be replaced. The capacity of your cooling system is 11.5 liters, good luck.

Nov 16, 2009 | 2001 Chevrolet Blazer

4 Answers

2000 JETTA OVERHEATING AT FIRST IT WAS LOSING WATER SO WE REPLACE THE HOUSING PIECE ITIS PLASTIC AND WAS CEACKED. nOW ITS JUST GETTING HOT NOT LOSING WATER


Your water pump impeller has probably come apart, you will have to do a timing belt job to get a new water pump in there. If you are not comfortable with that, take it to a shop. But yes, to check for water flow, pull the return line on the coolant bottle (little one on the top) and hold it so any water that would come out would go into the bottle, and start the engine (the engine has to be cold to try this test) there should be an almost immediate flow of water, if no water comes out, even if you give it a little gas, (should be a decent flow, not a trickle) than your water pump is in fact dead, very very common problem on 1.8 & 2.0 Jetta's, Beetles, and Passats.

Jul 07, 2009 | 2000 Volkswagen Jetta TDI

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

1 Answer

I have the same problem with my windstar blower is fine but is coming cold air but no heat i dont know what to do can any one show me how to fix it thnx


First, feel the heater hoses going into the firewall under the hood. If they are hot, then you have hot engine coolant going into the heater core. If they are not hot, then you either have a bad thermostat or you are very low on engine coolant.

Next you need air flowing through the heater core so it can come out heated through your vents. If the iar is flowing somewhere else, your temp blend door is not moving because the bend door motor is bad or your temp knob on your heater controls is bad. The blend door motor is an electric motor.

------------------------------------------------
Air Flow Control
Air flow control is accomplished in the following manner:
  • Primary control is through the function selector knob , mounted on the heater function selector switch, which is part of the heater control .
  • The function selector knob has the following positions: OFF, PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST and DEFROST.
  • The heater function selector switch combines a vacuum selector valve with an internal electrical switch.
  • The vacuum selector valve directs source vacuum to various vacuum control motors (18A318) . Refer to the System Airflow Schematic and Vacuum Control Charts.
  • An internal single-pole electrical switch is also controlled by the selector. The switch controls the electrical supply to the heater blower motor switch (18578) .
  • The position of the function selector knob determines the manner in which the system will operate.
  • Each position of the function selector knob is detented for positive engagement.
Temperature Control
The temperature control operates in the following manner:
  • Temperature control of the heater system is determined by the position of the temperature control knob (between COOL-BLUE and WARM-RED) of the heater control .
  • This control knob is connected to a potentiometer mounted in the heater control . This potentiometer is electrically connected to the electric blend door actuator that operates the A/C air temperature control door.


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  • Movement of the control knob from COOL (Blue) to WARM (Red) causes a corresponding movement on the air temperature control door and determines the temperature that the system will maintain.
System uses a reheat method to provide conditioned air to the passenger compartment.
  • All airflow from the blower motor (18527) passes through the A/C evaporator housing .
  • Temperature is then regulated by reheating a portion of the air and blending it with the remaining cool air to the desired temperature.
  • Temperature blending is varied by the air temperature control door, which regulates the amount of air that flows through and/or around the heater core (18476) , where it is then mixed and distributed.
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inside you plenum box:

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Mar 03, 2009 | 1998 Ford Windstar

1 Answer

Heater is slow to come up to temperature


the valve that allows water to flow is attached to the temp control switch on the dash. if the heater is slow to warm up, it could be your engine thermostat is stuck open.

Jan 12, 2009 | 2005 Ford F-150

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