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you have a faulty engine coolant temp sensor (ect) i had a similar problem with my 2001 s40 1.8. the fans stayed on after switching off the engine, but also mine would rev up to 4000 rpm about 5 mins after start up from cold. replacing the ect fixed both these problems, a genuine Volvo part should cost around £40. the ect is a mojor part controlling the injection system and a faulty one can cause all sorts of problems.
What else can I help you with?
Where is the blower motor resistor on a Volvo 2004 s40 located?
where is the blower motor resister located on an 2004 s40
How do you remove drivers headrest Volvo s40?
How do you remove the inside driver's door panel on a 2000 Volvo S40?
Why won't Volvo 2000 S40 turn signals work?
it is the switch good luck looking on how to change myself
Is there a fuel shutoff switch on a 2006 Volvo S40 and if so where is it located?
Where. Is the fuel shutoff switch on a 2000 s40 Volvo
How do you get the alarm fuse out of a 2000 Volvo s40?
With your fingers
How do you turn the passenger airbag on in a 2005 Volvo S40?
How do u turn on the passenger airbag in a 05 volvo
Your Volvo s40 radio is always off how do you turn it on?
If your Volvo s40 radio is always off, you can turn it on using the power button. The button is on the left, top-hand side.
What is spark plug gap for 2000 Volvo s40?
.30
What cars what do 0-60 in 6.3 seconds?
My 2000 Volvo s40 does
Which Tires for Volvo S40?
Which Tires for volvo S40?
Where is a starter motor on a volvo s40 2000?
The starter motor on a 2000 Volvo S40 is located on the lower side of the engine, near the transmission. It is mounted to the engine block and is typically accessible from underneath the vehicle. To reach it, you may need to remove some components or covers, depending on the specific engine layout. Always consult a repair manual for detailed instructions and safety precautions when working on your vehicle.
How do you reset clock on a Volvo s40?
Turn the knob on the dashboard near the meters.
