Question about 1994 Volvo 940

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Radiator overheating volvo 940GL 1997 model

I have change the radiator and the expansion tank no leakage found on the engine but after 40KM driving the water in the expansion tank is boiling and the pressure is so strong

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  • Volvo Master
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Have u replaced the thermostat? also have it checked for a leaking engine cylinder head gasket.

Posted on May 27, 2009

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LOOKING FOR RADIATOR CAP IN A 2003 VOLVO S60


This vehicle should have a coolant expansion tank...You will notice hoses running from the bottom of it and top LEADING TO THE RADIATOR..Don't confuse it with windshield washer tank...BE SURE AND LOOK FOR IT AND CHECK IT WITH ENGINE COLD...

Feb 24, 2015 | 2003 Volvo S60

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When driving for at least 15min engine overheating indicator lights up not on red but yellow get back home takes about 1hr to cool down i do notice that the engine is very hot


How is the water flow, bet you that it is poor and this is normally caused by 2 things, thermostat siezed shut and the other is a faulty water pump, both are urgent matters

Jan 03, 2014 | 2005 BMW 325i Sedan

1 Answer

I Have a Mitsubishi nativa 2006 model last week i bought used one, yesterday night when i drive suddenly my car is full heat i stop my car and open the cover so i found there water is leakage over the...


I do not understand what your problem is so i will try to see if i can tell you what i think you are saying, the car is leaking coolant from the radiator, if this is correct then replace radiator. or is the coolant spilling out because engine temp is overheating , if the engine is overheating this will cause the ac system not to cool down and make the cold air hot due to the condensor not cooling,

The first step is to repair any leaks and also make sure the radiator fan turns on to cool engine, when you turn on the a/c the fansss will run, if they do not then have the fans checked.

Jun 13, 2012 | Cars & Trucks

2 Answers

Cant find the valve to let air pressure from my radiator for my water to flow right


FILL COOLANT SYSTEM UP BY POURING COOLANT IN THE EXPANSION TANK UNTIL COOLANT LEVEL STOP DROPPING IN THE EXPANSION.WHEN YOU POUR COOLANT IN EXPANSION TANK AIR BLEED OFF THROUGH THE SMALL COOLANT LINES GOING TO EXPANSION TANK.WITH PRESSURE CAP OFF RADIATOR COOLANT LEVEL IN EXPANSION IS AT FULL COLD MARK.WHAT YOU TO DO CRANK ENGINE UP LET IDLE WARM UP UNTIL COOLANT DROPS IN EXPANSION TANK KEEP ADDING COOLANT UNTIL STOP DROPPING STAY AT FULL COLD MARK.WHEN COOLANT LEVEL START RISING IN EXPANSION TANK.PUT PRESSURE CAP BACK ON RADIATOR.WHILE ENGINE IDLING WATCH TEMPERATURE GAUGE.IF START CLIMBING TURN OFF ENGINE LET IT SIT FOR LITTLE WHILE TAKE A LARGE RAG OPEN RADIATOR PRESSURE CAP A LITTLE AT A TIME TO KEEP FROM GETTING SCALDING TO RELEASE AIR IN COOLANT SYSTEM.WHEN PRESSURE IS RELEASED OPEN PRESSURE CAP ADD MORE COOLANT IN THE EXPANSION TANK.CRANK ENGINE AGAIN LET IDLE WHEN TEMPERATURE GAUGE START CLIMBING. TURN OFF ENGINE WAIT FOR WHILE BEFORE OPEN RADIATOR PRESSURE CAP.WHEN YOUR THERMOSTAT OPENS WHEN TOP RADIATOR HOSE IS HOT AND ENGINE COOLANT TEMPERATURE GAUGE STOP CLIMBING AND COOLANT LEVEL STOP DROPPING IN THE EXPANSION TANK.ALL AIR IS EXPELLED FROM COOLANT SYSTEM TO KEEP ENGINE FROM OVERHEATING.

Jun 10, 2011 | 2001 Cadillac DeVille

1 Answer

I need to find a guide to replacing the radiator in a 1997 Volvo S90 w/ automatic transmission.


Volvo 1990-1998 Repair Guide
Radiator - REMOVAL & INSTALLATION
Perform this work only on a cold engine.
  1. Disconnect the negative battery cable.
  2. Set the heater control to MAX heat.
  3. Remove the expansion tank cap.
  4. Place a suitable drain pan into position. Open the **** on the right-hand side of the engine block. Fit a hose to the **** to collect the coolant. Open the radiator draincock.
  5. Close the drain cocks when the coolant is completely drained.
  6. Remove the cooling fan.
  7. Remove the cooling fan shroud.
  8. Disconnect the upper and lower radiator hoses
  9. 91a8f77.jpg
  10. On vehicles equipped with automatic transmissions, disconnect the transmission oil cooler lines at the radiator. Plug the lines immediately. Catch the spillage from the radiator in a separate pan.
  11. 379639b.jpg
  12. Some vehicles are equipped with a temp sensor on the drivers side top of the radiator, if equipped remove the connector.
  13. Remove the radiator retaining bolts and brackets.
  14. a2b05c9.jpg _506019a.jpg
  15. Remove the radiator assembly from the vehicle.
  16. 45887bc.jpg

On 850/C70/S70/V70 models, the radiator comes out the bottom of the vehicle.
To install:
  1. Place the radiator into position and install the retaining bolts.
  2. On automatic transmission vehicles, connect the oil cooler lines.
  3. Install the fan and shroud.
  4. Install the lower and upper radiator hoses.
  5. Connect the expansion tank hose. Make sure that the overflow hose is clear of the fan and is free of any sharp bends.
  6. Fill the cooling system through the expansion tank, with a 50 percent antifreeze, 50 percent water solution.
  7. Connect the negative battery cable.
  8. Run the engine until normal operating temperature is reached.
  9. Bleed the cooling system.
  10. Check for leaks.
  11. Top up the cooling system, as required.
  12. Replace the cap.
  13. Check and top up the automatic transmission fluid level.

Hope thats help (remember comment and rated this).

Apr 29, 2010 | 1997 Volvo S90

2 Answers

Temo gauge went all the way up and i just had a radiator replaced .....


Change the thermostat, and check and see if the radiator cooling fans are working.

Nov 13, 2009 | 1998 Volvo S90

1 Answer

850 1997 turbo volvo engine keeps overheating


check the thermostat, it's where the top radiator hose meets the motor in a housing

Sep 09, 2009 | 1997 Volvo 850

1 Answer

2001 volvo s440 1.9t


Volvo Radiator, Thermostat and Sensors Your cooling system's temperature controls include all coolant temperature sensors, Volvo thermostat, Volvo radiator or expansion tank cap, cooling fan(s) and fan clutch (if equipped). These cooling system parts function primarily independent of the engine but control the engine either through cooling or by sending control signals to your Volvo's electronic systems.
The Volvo thermostat is a spring-loaded valve that opens and closes based on the temperature of the coolant flowing through it. A high temperature reading followed by a drop to normal temperature (or a continuously low temperature) is a common first sign of a sticking Volvo thermostat. However, many other conditions may cause these symptoms, so you need to know how to eliminate each possibility.
The Volvo radiator or expansion tank cap is also a spring-loaded valve reacting to system pressure. It serves to maintain proper system coolant level at predetermined pressures. It must always be replaced with an exact replacement cap with the same pressure setting. Never use other caps except for short-term emergencies!
A belt-driven fan blade for pulling air through the Volvo radiator is usually on the Volvo water pump pulley and should have a fan clutch to control it. The fan clutch allows the fan to turn with the belt at low engine speed and "free-wheel" at higher speeds. A bad fan clutch either doesn't allow the fan to spin at low speed (overheating in traffic) or doesn't allow it to free-wheel at high speed (potential overheating on highway or reduced gas mileage).
An electric fan can be either by itself (usually front-wheel drive) or auxiliary (used with a mechanical fan). Both types are controlled via a temperature sensor - in the Volvo radiator or upper Volvo radiator hose or on the Volvo thermostat or Volvo water pump housing. This sensor is usually an on/off type switch with a fixed temperature setting. (Some vehicles may have 2-3 settings for multi-speed fans.) This sensor is commonly called an "auxilliary fan switch".
Other common temperature sensors are: 1) gauge sender (variable output); 2) warning light sender (on/off type); 3) lambda and/or fuel injection sensor(s) (variable to control fuel injection settings); 4) thermo-time switch (cold start valve control). Your Volvo may have other sensors as well.
Temperature control is critical to both performance and emission control. Unfortunately, this system is the most difficult to troubleshoot without proper equipment and diagrams. It's even more difficult with computers that adjust timing, idle speed, vacuum and fuel delivery automatically to make up for potentially faulty temperature sensor signals.
Maintenance of your cooling system sensors is virtually impossible since there's nothing really to "maintain". Keeping them clean both internally (coolant replacement) and externally (engine cleaning) is the best way to ensure trouble-free driving. Checking and replacing all parts at the factory-recommended time or mileage limits helps as well

Jul 23, 2009 | 2001 Volvo S40

1 Answer

1989 volvo not shifting into gear


The only fluid expansion tank I know of is for the cooling system,and if that is the case you my have a leak in the transmission cooler that is built into the radiator.

Nov 30, 2008 | 1989 Volvo 240

2 Answers

Volvo 1994 Radiator


hi my name is paul
these days most cars have a expansion tank under the bonnet or hood
this is were you fill it up with water it looks like a plastic bowl with a screw lid
DO NOT UNDER ANY CIRCUMSTANCES UNDO CAP WHEN ENGINE IS RUNNING OR IS STILL HOT *** DANGER OF SCALDING DO NOT OVERFILL CHECK OUT MAX LEVEL
car manufacturers use expansion tanks because as the water in your engine warms up it expands under high pressure and fills up the expansion tank with excess water when the engine cools down the water cools and it shrinks and goes back into the cooling system hope this information has been usefull
regard paul

Jul 11, 2008 | 1994 Volvo 940

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