Question about 2003 Volvo S40
Replaced fuse and it will run for awhile then will blow again. need locations to look for probable cause.
Sensor wire may be shorting out.sensor wire may be stripped and grounding against engine or other ground source.
Posted on Nov 30, 2012
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Posted on Jan 02, 2017
The car uses a lot of fuel, when the garage replaced the sensor the car used a lot less fuel but the sensor failed within a day and the engine management light came back on again. It's after the cat sensor, the one at the back. i don't know what type of sensor it is but it has a 4 pin white plug and is about 1meter long (part no is 308643308 ntk a4f ) if it helps. I just want to know if it is possible that the exhaust can damage the sensor if it is loose? The garage keeps replacing the part but it does not look like they are trying to fix the problem!! i will fix the exhaust first and try a new sensor again.
Posted on Nov 12, 2008
More likely that the solenoid in the transmission is shorted to ground. Has any new electronic equipment been installed recently, like stereo, alarm, etc?
Posted on Feb 10, 2009
i have a 98 s40. The fuses can be found internal (under the dashboard near the bonnethandle). Inside it you can find the fuse clamp and extra fuses. These can also be used for the external fusebox under the bonnet.
I have found the fuse that might be broken, but i can't replace it because it has some extra casing. It's for internal lights and the alarm.
Posted on Jun 07, 2009
The temperature sensor for the fan now does it run when the engine is cold,with the a/c off? That fan only need to reun when the engine is about to exceed operating temperature,The sensor itself may have shorted out, It is not need when engine is cold unless the a/c is commanded on
Posted on Apr 22, 2011
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