2006 Volvo 630 Cummins Help Needed

Discussion in 'Volvo Forum' started by Volvo2, Feb 1, 2014.

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  1. Feb 1, 2014 #1
    Volvo2

    Volvo2 Bobtail Member

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    Jan 16, 2014
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    Hello Guys I am facing an issue with my 06 Volvo 630 450 hp cummins

    The problems are. The fan is always running (replaced both sensors) still doesnt stop. Sometimes it starts working fine. but when the fan is having issues the truck cant go past 12k rpm and doesnt pull very well. When the fan is working fine the truck pulls fine. Right now the truck heater is not working. With the fan working no heat is coming from the vents which means defroster doesnt work! I am running my webasto to keep my b**ls from freezing.


    Please let me know maybe of a temporary fix I can try?


    Thank you!

    -Volvo2
     
    Volvo2, Feb 1, 2014
    Volvo2, Feb 1, 2014
    #1
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  3. Feb 1, 2014 #2
    boneebone

    boneebone Road Train Member

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    My friend had a similar issue in his 2003 Volvo VNL660 ISX and it would up being the fuse in the dash for the fan was blown. He replaced the fuse and the fan stopped staying on.
     
    Last edited: Feb 1, 2014
    boneebone, Feb 1, 2014
    boneebone, Feb 1, 2014
    #2
  4. Feb 1, 2014 #3
    Volvo2

    Volvo2 Bobtail Member

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    Jan 16, 2014
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    I tested the fuses with the tester and they seem to all be working, I have 780k miles. Amy other ideas?
     
    Volvo2, Feb 1, 2014
    Volvo2, Feb 1, 2014
    #3
  5. Feb 2, 2014 #4
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    check ECM auxilarry inputs... if ECM reads A/C on it actuates fan
     
    Pablo-UA, Feb 2, 2014
    Pablo-UA, Feb 2, 2014
    #4
  7. Feb 2, 2014 #5
    Volvo2

    Volvo2 Bobtail Member

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    Jan 16, 2014
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    Pablo, can you clarify on what you said? I reread it several times but im a newbie at this...

    Thank you
     
    Volvo2, Feb 2, 2014
    Volvo2, Feb 2, 2014
    #5
  8. Feb 2, 2014 #6
    bowtieboy77

    bowtieboy77 Light Load Member

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    Aug 16, 2013
    Southern, Ontario
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    I believe what pablo is stating is if you have a scanner go to the parameter screen this is a list of all the sensor readings, switch positions, pressures, and temps. Scrol down and there should state if the a/c demand switch is on or off. If the a/c demand switch is off on dash and selector not on defrost (a/c automatically runs on defrost) but the scanner says a/c is on that could cause fan to stay locked on. Pablo if I am incorrect with what you were describing feel free to correct me.
     
    bowtieboy77, Feb 2, 2014
    bowtieboy77, Feb 2, 2014
    #6
  9. Feb 3, 2014 #7
    Volvo2

    Volvo2 Bobtail Member

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    Where can i get a scanner ?
     
    Volvo2, Feb 3, 2014
    Volvo2, Feb 3, 2014
    #7
  10. Feb 3, 2014 #8
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    I use Cummins Insite software)))
     
    Pablo-UA, Feb 3, 2014
    Pablo-UA, Feb 3, 2014
    #8
  11. Feb 6, 2014 #9
    wrongway597

    wrongway597 Bobtail Member

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    Feb 6, 2014
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    Might just be a high pressure sensor for the ac calling for the fan to come on. Un hook it and see if the fan goes off.
     
    wrongway597, Feb 6, 2014
    wrongway597, Feb 6, 2014
    #9
  12. Feb 6, 2014 #10
    Volvo2

    Volvo2 Bobtail Member

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    Jan 16, 2014
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    Yeah I am done. Injectors and cams failed
     
    Volvo2, Feb 6, 2014
    Volvo2, Feb 6, 2014
    #10
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