Question about 2000 Volvo S40

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Volvo 1.9 TDI 1998 losses power and slugish in performance.

My Volvo 1998 S40 1.9TDi losses power and becomes slugish in perrformance. And almost doing 30MPG. I have checked tyre pressure, changed fuel filter but it did not work. Please help. I shall be grateful to you.
Virk
e-mail: [email protected]

Posted by Anonymous on

  • 7 more comments 
  • Anonymous Apr 13, 2009

    Thank You s_b_simbad for posting me your valuable suggestion. More so, my volvo starts up very good. It shows very low traction power up hill rather becomes sluggish. Could you please suggest where is Mass Air Meter located ? Is it also called Mass Air Low Sensor ? There is a small pipe connected to the BIG Air Filter pipe and going down side of the Engine, What is that ?? Please suggest what to do ? GRATEFUL ....

    nVirk

  • Anonymous Apr 13, 2009

    I am grateful to you for your instant response. I have not gone for the trouble codes neither refered to any Garage as some days ago I have bought this car. I did the MUST DO sort of things after purchase. I changed fuel filter that was EXTREMELY filthy and RUSTY from inside seemed as if the change was first ever the car came on road and likewise the AIR FILTER. As far as I can guess through my experience there is some problem with the fuel intake or the air intake as the engine does not respond fully to the trottle. However on the motorway as long as there is no change of gear the engine does well. As you have advised now I am not going to TICKLE on my own with anything like MAF would go for detecting the CODES. I would definetely come back to you. Regards >>nVirk

  • Anonymous Apr 13, 2009

    Sir,

    Thanks Again for your help. For the MAF Sensor >> I find an electrical connector (2 Wire) right obove the Air Filter Box on the main big pipe. The BIG Air Filter pipe goes behind the Engine where the Exhaust is and is attached to SOMETHING of metal with a big (Screwing) clump. So advise me >> am I right in locating the MAF ?Please correct me If I misjudge the MAF??

    Grateful to you

    nVirk

  • Anonymous Apr 13, 2009

    Thank You Sir. I would refer back to you once I go for it and get it done on my own.

    Regards,

    nVirk

  • Anonymous Apr 13, 2009

    Thank You Sir. I would refer back to you once I go for it and get it done on my own.

    Regards,

    nVirk

  • Anonymous Apr 14, 2009

    Yes Sir, After assuming myself as MAF is not faulty as the diode seems to be clearly showing its colour and driving the car with or without the electrical connector bears no effect on the ''pick up'' Today I have managed to do some working on my Volvo's ''Slugishness'. Firstly I went to a Garage and then to Volvo's Workshop. The Garage 1st mechanic diagnosed as its inefficient TURBO and 2nd mechanic as a faulty CATALYC CONVERTOR. The Volvo Workshop suggested for taking an appointment for a Check-Up in the forthcoming week. AND they sounded expensive for their services. Infact I doubt the credibility of GARAGE (this and MOST of it in the market) because they are not convincing. Now, Sir, what do you SUGGEST ??

  • Anonymous Apr 16, 2009

    Sir now there is another confusion about the Air Mass Meter. If it is something like the image refered to here, I have only located a 2 wire electrical connector on the BIG pipe immediately after the Air filter Box. And the Big pipe has only 2 ends and nothing like this image that definitely ought to have 2 clumps to attach only this device in between the last end & the Air filter box.(total 4 Clumps). Can u give the image and also guide me where are u located. I am in Northampton. Thank You Sir and Wait for your further advice.

  • Anonymous Jun 29, 2009

    Sir, Are you available ?

  • Anonymous Jun 29, 2009

    Sir, Are you available for giving suggestions ????

    Regards,

    Virk

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Anonymous

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Ok, lets try to throw few suggestions

number 1 probably problem with air mass meter
number 2 fuel pressure regulator or electrical solenoid on the high pressure fuel for activating-deactivating third piston

can you please send more info when it looses power etc...

Posted on Apr 11, 2009

  • 4 more comments 
  • Anonymous Apr 13, 2009

    hello



    no/problem

    Air mass meter How other call it MAF is the same thing. It is licated where the air filter is, so if you follow air filter box big pipe you will see the plastic section of the pipe with electical connector. One end is attached to the air filter box and the other to the big pipe via big jubelee clip. Just to warn you before hand that this sensor for volvo is extremly expensive, after market or non original is around £300 and original from volvo £180---------it doesnt make sense but here you go. It will be worth your while to call volvo dealer and ask for part number of the air mass sensor. Post it to me and i can have litlle bit more research on the prices and advice you where is the cheapest to buy. The fuel pressure regulator, regulates fuel pressure in the common rail, so depending of your throttle demand fuel pressure increasess and decreasess in the rail.

    Before we go any further with guess work, can you please send me the trouble code-s so we can start from here.



    In the mean time, if you resolve the problem please inform me and rate my comment

    Thanks

  • Anonymous Apr 13, 2009

    hello again



    in addition to my privious post this is something you can do youself before you go and buy new air mass sensor. Take the component off and clean it with brake cleaner, white spirit or some other electrical cleaner. Be carefull, because what you are cleaning is the little red diode, so dont use too much of cleaning stuff, little and gentle rubing so you clean off engine oil film of it??



    Let us know how you get on?

    thanks

  • Anonymous Apr 13, 2009

    hello



    thats ok,



    you can clean this red diode youself and malfunction codes will not be effected-erased from computer providing there is MIL illuminating on your dash panel, which means its a solid fault. If the power of the vehicle is interupted with touch of brake pedal-clutch pedal it could well be one of your switches is telling computer that you are breaking and engine is not injecting enough fuel.

    Get the trouble codes regardless if you decide garage to fix problem or you do it youself for future reference. It will be good to know codes.



    Any more help , just SHOUT!!!!!!!!!!!!

    thanks

  • Anonymous Apr 13, 2009

    ok, forget anything behinde the engine

    what you have to concrentate is electrical component on the big plastic pipe that is attached on air filter box. One end with big clip and other air box side with two i think torx screws. That is the one you need to take off. Or if its easier take off filter box cap by means uncliping shiny clips around and big clip on the big rubber hose pipe.





    Then clean the diode inside

    thanks

  • Anonymous Apr 13, 2009

    ok, no prob

    i have to pop out soon, but will be back later on tonight. In the mean time if you come up with anything just post it and i will come beck with some solution.

    good luck

  • Anonymous Apr 15, 2009

    helllo again



    ok, the driving performance stays the same (slagish) if you leave air mass connector on or off... you see, that partially points to your trouble.. Imagine the scenario where your air mass meter is working ok andyou get good performance THEN you disconnect air mass meter and you loose power at this point you'll be saying to youself ahhh, i left air mass meter off thats why i dont have any power. So it could be the simple matter of the fact that air mass meter is faulty and that's why it doesnt make any diffrence.

    If i go back to what 1st mechanic said, i can tell you he is rite, BUT dont forget turbo wont work sufficient if measured amount of air by airmass meter is wrong!!!!! Bear this in mind ALSO, if you get insufficient fuel pressure in the common rail turbo wont work sufficient again.

    Now, what 2nd mechanic said is complete nonsense, catalyst convertors dont fail instantly. Ignore what he said, my advice.

    NOW, when airr mass meters stop working most of the time they dont bring trouble codes, so the way to diagnose them is by observing reading with fault code reader while someone is driving.

    To diagnose fuel pressure in common rail, same procedure but you have to observe pressure in the rail, when vehicle idling approximaty fuel pressure is around 150-270 bars, on the fast idle or engine under the load i would say between 500-750 bars.



    so what you need to do now is, go to the local garage, tell them to read fault codes and record them on peace of paper before they ERASE them. GET the code numbers and code definition. Also, if there diagnostic equpiment supports VIEW LIVE DATA, tell them to check air mass meter readings and fuel pressure in the common rail.



    Thats it for now, keep me informed how you got on

    GOODLUCK

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