Hello,

I having a trouble with my S40 from one year more o less. Some times, when I speed up with, for example for overtake other cars, or simply because I want increase my speed, the car stands alone. Then, if I park and start it another time, the car go on. But this is a rare and dangerous trouble.

Has anybody had this problem before?
If so, can you explain me what is the cause and how solve it?

Thank you very much.

 

I forget that is a model of 2007, eupean model.

 

First up, why not get your fault codes checked. ( OBD11 reader )
It will give you a better starting point to pinpoint your problems

 

Thank for starting helping me.

But, can I get a OBD11 reader for Volvo or one universal?

Or I must take my car to a volvo specialist garage?

And, to get the fault I have to run my car until get it, but after the car stops, the fault can be registered in the computer, so a while after I can read it?

 

Most cars manuf' after 1996 can be diagnosed with an OBD11 reader.
A universal reader will work fine for generic and many manuf' specific trouble codes.
I have myself, recently purchased an Autel Maxiscan MS300 CAN OBD11 reader to give me initial diagnostic guidance. (stand alone-powered directly by car. No computer req'd.)
Alternatively you can go to a Volvo dealership and have them check it out with their Volvo specialised equipment.
I you feel you will benefit long term you could buy one, or an equivalent alternative at a good price on ebay, otherwise an independant automotive mechanic will have one to check for your current problems.
Some mechanics whilst not Volvo registered service agents, are very familiar with them and their servicing needs and are often a cheaper place to get your repairs done if your not a DIY mechanic.

 

Well,

Then, when I obtain my OBD-II reader, to this type of fault where my car only stops in some circunstances: high acceleration to overtake other vehicules, or to increase the speed in plain or steep road, I have to keep conected the device during my test travel? It means, the data are registered in a car memory and I don't need leave the OBD-II conected during the travel, I have leave pluged my OBD to register in real-time, or the it's indiferent as the OBD only registers when I clic start scan?

I thanks you if you tell me what is the best way to scan my car data from those three.

Thanks you very much with your help.

 

Your OBD11 reader should not be connected to check for fault codes whilst the engine is running. Only turn on ignition key to position 2. (do not start engine)
Reader should have operating instructions

Your cars on board computer will have recorded any faults that have occurred previously and since the memory was last cleared at servicing so the engine does not need to be running for the reader to uptake the fault codes currently stored. (if any???)
The problem codes you are having now should be in the memory and the code reader will list them.
Take a record of each and check them against the code readers manual which has a generic list.
You can also upload specific Volvo fault code list on internet or by a search here in the forum.
With those answers you will at least have a starting point to work from to ascertain the nature and potential extent of your problems.

If your not confident in the above you might be wiser to accept the expense involved and simply go to a Volvo Service dealer to resolve it.

Having some background idea of what is wrong does make it more difficult for a Service Dealership to deceive you, possibly charge you for work not related to your problems and can save you money if you are a DIY mechanic, in needlessly replacing parts by guesswork, and hoping for the right fix.

 

Thank you very much for clarigy me difflock54

Exactly, I'm trying not being deceived.

I'll get an OBD-II reader to try obtaining fault codes.

When I get it I'll inform you all. Also I've read this forum (in spanish), Motor que se apaga en marcha - Página 2 - ForoCoches,

where at the end it seems to be a faulty fuel pump relay, but I'll try to prove myself.

 

I'm thinking the Fuel Pressure Sensor is faulty. Is the check engine light on? If yes then there will be a trouble code stored in the computer. An OBD-II reader can read the trouble codes for you. (as discussed above)

 

Hi Hudini. The check engine doesn't light, and in a replacement parts garage they have said me that the fault may be better a mechanical fault (turbo,...). And in the case they plug in the OBD-II reader, they could find nothing.

In any case I want to buy a cable OBD-II reader to see what I get.

Thanks.