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Radiator fan of my volvo s40 2003 model starts when engine is off what can cause this

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Posted on Aug 12, 2017

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Why does 2000 s40 volvo turbo runs hot and the fan stays on after shut off


fans are designed to run on after you shut engine down as engine temperature rise after switching off . running hot could be caused by the top hose having gone soft when you rev the engine the water pump sucks the hose flat stopping the coolant flow or the radiator is blocked and need flushing out

Sep 16, 2014 | 2000 Volvo S40

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Volvo radiator fan


It should be pulling air into the engine bay. If the fan still doesn't work after being replaced ; check (temp sensor) and fan relay.

Jul 09, 2014 | 2001 Volvo V70

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1998 Volvo S70 radiator fan doesn't work.


Check the relay switch, change the radiator cap of the expansion tank. Pressure lost through the cap with not activate the radiator fan.

Apr 11, 2014 | 1998 Volvo S70

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1998 Volvo S70 radiator fan doesn't work.


Bad fan relay or fuse bad temperature sensor/sending unit

Apr 11, 2014 | 1998 Volvo S70

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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

1 Answer

My Volvo is overheating and mixes the engine oil with the coolant, however,there's no sign of coolant and oil mixture in the engine, only in the radiator and coolant lines. The oil cooler is also clean....


the oil that you are seeing may be transmission fluid if its an automatic,the transmission lines go through the radiator for cooling.if the radiator fails in that section ,it could be leaking into the antifreze,or you have a blown head gasket

Sep 21, 2009 | 2001 Volvo S40

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

I got code 116 on my 1998 volvo s 90 and my engine light is on


I do believe this is the ECT sensor code. This sensor for some reason only on the 960/S90 causes the car not to start. You will need to replace this ECT (engine coolant temperature sensor). On this model I think it is on the back of the head, a gray D shaped 2 wire connector against the firewall. If that is not case, then your sensor is located at the engine side of the upper radiator hose.

chris

Mar 20, 2009 | 1998 Volvo S90

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