Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Loss of power '05 S60 14L

Discussion in 'Freightliner Forum' started by RERM, Dec 24, 2014.

Page 1 of 2
  1. Dec 24, 2014 #1
    RERM

    RERM Road Train Member

    1,683
    1,123
    Dec 13, 2012
    Chicago, IL
    0
    I have a 2006 Century with a 14L S60, yesterday I was cruising along at 65mph and suddenly began loosing speed, 60, 55....29K in a 20" container, finally the truck would not pull over 47 mph (30 in the slightest incline). I pulled over, went to a Petro and changed the fuel filter...nothing. I get no smoke, no warning signals, no strange noises...the engine sounds normal, from the cabin and from the outside.

    The mechanic at the Petro guessed (???) that the turbo is not building up pressure (though it is spinning as we checked it manually), over the phone, the technician at Inland Detroit Diesel suspected a bad VPOD sensor or cracked CAC. This morning I drove the tractor bobtail home and it easily achieved cruising speed (65mph), again no strange noises, no smoke, no low oil pressure. My mechanic says it's probably the turbo. Now, I'm wondering, which is it? I don't really feel like loosing a few weeks and thousands of dollars on a mechanics switching game of try this or that.

    I've read other similar posts, but it seems no one posts the end result.
     
    RERM, Dec 24, 2014
    RERM, Dec 24, 2014
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Dec 24, 2014 #2
    Old Man

    Old Man Road Train Member

    4,597
    13,466
    Apr 3, 2009
    Oklahoma City, OK
    0
    Good time to put in a boost gauge and a fuel pressure gauge. A badly leaking CAC will cause smoke and high exhaust temps. If the turbo werent spinning it would smoke like a coal fired train.
     
    Old Man, Dec 24, 2014
    Old Man, Dec 24, 2014
    #2
  4. Dec 24, 2014 #3
    RERM

    RERM Road Train Member

    1,683
    1,123
    Dec 13, 2012
    Chicago, IL
    0

    Yeah, agreed on the gauges...but that's the thing, no smoke!!!
     
    RERM, Dec 24, 2014
    RERM, Dec 24, 2014
    #3
  5. Dec 24, 2014 #4
    passingthru69

    passingthru69 Road Train Member

    8,740
    34,845
    Jul 12, 2009
    davenport,Ia / ratchaburi, thailand
    0
    Could be a leak in your air to air cooler.
     
    passingthru69, Dec 24, 2014
    passingthru69, Dec 24, 2014
    #4
  7. Dec 24, 2014 #5
    wore out

    wore out Numbered Classic

    14,338
    173,921
    Jun 5, 2013
    CHASIN THE DEVIL'S HERD
    0
    The thing is several things could cause this same symptom. To diagnose off the symptoms is very inefficient. Without seeing, touching and feeling it with fuel pressure and boost gauges along with the scan tool on the data list to actually see what's going on to compare electrial values to real values on the test drive your basically guessing. That's where most go wrong they assume off the symptoms or say well I have no check engine light.
    Another one of my favs is well it has this code so replace said sensor without further diagnosis.
     
    wore out, Dec 24, 2014
    wore out, Dec 24, 2014
    #5
  8. Dec 24, 2014 #6
    Bigman58

    Bigman58 Light Load Member

    60
    11
    Feb 12, 2014
    0
    I had a similar occurrence 2 weeks ago. I replaced my radiator and left one of the clamps loose to the air duct feeding the Turbo. It popped off while climbing a hill. (Scared the crap outa me!) I put it back on and tightened the clamp.
    It's good to check for lose of air in the connecting point on both sides of the engine. Get a bottle of soapy water, and while the engine is idling on high idle. Squirt around these connections fo leaks.
    Small air leaks will effect performance and fuel mileage. They wont cause what you described though. It's possible you have a significant lose somewhere. Track it down. Maybe you can have the air manifold flushed and tested. That's the big aluminum thing in front of the radiator. Maybe it's clogged. Check it for leaks too.
    Hope this helps. Good luck
     
    Bigman58, Dec 24, 2014
    Bigman58, Dec 24, 2014
    #6
  9. Dec 24, 2014 #7
    Old Man

    Old Man Road Train Member

    4,597
    13,466
    Apr 3, 2009
    Oklahoma City, OK
    0
    If the cac is leaking bad enough to have the performance lost he has you could hear the leak under a load, it would smoke and pyro temps would be high, unless the ecm is cutting power due to high exaust temps. A fuel supply problem will cause the same symptoms, a collapsed fuel line"internal or bad fuel pump.
     
    Old Man, Dec 24, 2014
    Old Man, Dec 24, 2014
    #7
  10. Dec 26, 2014 #8
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

    18,693
    43,232
    Sep 18, 2006
    the road less travelled
    0
    I had a 12.7 in a 2001 do that, and they finally found a soft obstruction from 'coked' fuel in the fuel filter housing. Took the shop most of a weak to figure that out. That truck had other issues and also a working Peoplenet and I watched the fuel mileage cumulative climb the whole way home. I never drove it again and it was the last of 5 of those units that kept running until the company was dispersed.

    Our milk hauler from when I was farming had another, older truck that had the head removed and got some oil dry in a fuel passage, mostly obstructing the flow of fuel, but that probably wouldn't happen unless the head had been removed. That driver was even more ticked off than I was.
     
    25(2)+2, Dec 26, 2014
    25(2)+2, Dec 26, 2014
    #8
  11. Dec 26, 2014 #9
    EHB

    EHB Medium Load Member

    489
    198
    Apr 26, 2011
    Newfoundland
    0
    No smoke... check to see if any thing is coming out of the stacks... your muffler could be plugged too..

    I would drill a 1/2 hole in the back of the muffler and see what happens.
     
    EHB, Dec 26, 2014
    EHB, Dec 26, 2014
    #9
  12. Dec 26, 2014 #10
    RERM

    RERM Road Train Member

    1,683
    1,123
    Dec 13, 2012
    Chicago, IL
    0
    Well, truck is at Freightliner now, I'll post the results when I know....
     
    RERM, Dec 26, 2014
    RERM, Dec 26, 2014
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 2