How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask J.R. Your Own Question

J.R.
J.R., Technician
Category: Heavy Equipment
Satisfied Customers: 7444
Experience:  13 years as warranty technician for Detroit Diesel
13636126
Type Your Heavy Equipment Question Here...
J.R. is online now
A new question is answered every 9 seconds

Star: Detroit..coolant level..cap..level and drove 850 miles

Customer Question

Hi, We have a 2006 Western Star with a 60 series Detroit engine. Last week it shut down on us approx. 8 times the last time we were in a good location so left it off for 30 minutes checked the coolant level and it was at level in the site glass still removed cap and it needed 64oz of water brought it back to level and drove 850 miles home never shut down or was turned off again. This morning we were heading out went 4 miles and it shut down again. ANY IDEAS??????
Submitted: 5 years ago.
Category: Heavy Equipment
Expert:  J.R. replied 5 years ago.

Here is the information on how to troubleshoot code 39. The problem sounds more like the egr valve or the vnt vanes in the turbo.

 

Flash Code 39 is used for several Exhaust Gas Recirculation (EGR) system or Variable Nozzle Turbine (VNT) operational faults. These codes are typically logged in the ECM/ECU when one of the components are faulty.?

The SAE J1587 equivalent codes for Flash Code 39, EGR valve fault:?

s 146/2, EGR leak - Boost Power

s 146/12, EGR leak - Boost Jake

s 146/7, EGR Valve not responding

The SAE J1587 equivalent codes for Flash Code 39, VNT vane fault:?

s 147/2, VNT Vanes not responding - Boost Power

s 147/12, VNT Vanes not responding - Boost Jake or faulty Barometric Pressure Sensor

s 147/14, EGR flow too low

s 147/11, VNT Vanes at Max - Jake

s 147/7, VNT Vanes not responding - EGR

There are no wires to check for Flash Code 39. The sensor values and the ECM/ECU calibration are used to decide a mechanical fault is present.?

 

Troubleshooting Flash Code 39, SID 147/FMI 12

Engines built from February 2004 (S/N: 06R0761470) through the end of July 2004 (S/N:06R0788688) may have a defective Barometric Pressure Sensor.?

A faulty Barometric Pressure Sensor can cause this fault (SID 147/FMI 12). Refer to "43.2.1 Check Barometric Pressure Sensor" first to check the sensor.?

Section 43.2.1
Check Barometric Pressure Sensor

Check for a faulty Barometric Pressure Sensor as follows:?

Turn the ignition ON but leave the engine OFF.

Using Detroit Diesel Diagnostic Link (DDDL) or a Diagnostic Data Reader (DDR) compare Barometric Pressure to Air Inlet Pressure.

If the pressure differential is 4.1 kPa (0.6 psi) the sensor is not faulty and has not caused the code. Refer to "43.3.1 EGR Related Codes" .

If the differential is greater than 4.1 kPa (0.6 psi), replace the Barometric Pressure Sensor and check for codes. If there are no codes your troubleshooting is complete. If there are still codes, refer to "43.3.1 EGR Related Codes" .

If the pressure differential is less than 4.1 kPa (0.6 psi), contact the Detroit Diesel Customer Support Center(NNN) NNN-NNNN.

 

The following procedure will troubleshoot Flash Code 39. ?

Section 43.3.1
EGR Related Codes

For all EGR related codes, first refer to "20.18 Exhaust Gas Recirculation System Basic Checks for Series 60 Engines" , "Exhaust Gas Recirculation System Basic Checks, "and perform the steps listed. Performing the basic checks will troubleshoot the components that could be responsible for logging these codes.?

If the basic checks all pass, and no fault can be found with the VNT/turbocharger or EGR valve, then it is recommended that the information you have collected be available to discuss with the Detroit Diesel Customer Support Center(NNN) NNN-NNNN.?

Code s 146/7 - occurs if actual EGR rate during EGR mode operation is less than it should be. This fault will lock boost mode operation and illuminate the CEL/AWL for the remainder of the ignition cycle.

Code s 146/2 - occurs if actual EGR rate during Power Boost mode operation is greater than a calibrated value. This fault will illuminate the CEL/AWL for the duration of the fault being active.

Code s 146/12 - occurs if actual EGR rate during Boost Jake mode operation is greater than a calibrated value. This fault will illuminate the CEL/AWL for the duration of the fault being active.

Code s 147/7 - occurs if error in actual EGR rate vs desired EGR rate (Actual - Desired) during EGR mode operation. This FMI signifies excessive EGR flow. This fault will lock boost mode operation and illuminate the CEL/AWL for the remainder of the ignition cycle if the actual is greater than the desired.

Code s 147/2 - occurs if error in actual boost vs desired boost during Power Boost mode operation is greater than it should be. This fault will illuminate the CEL/AWL for the duration of the fault being active.

Code s 147/12 - occurs if error in actual boost vs desired boost during Jake Boost mode operation is greater than it should be. This fault will illuminate the CEL/AWL for the duration of the fault being active.

Code s 147/14 - occurs if error in actual EGR rate vs desired EGR rate (Desired - Actual) during EGR mode operation. This FMI signifies low EGR flow. This fault will illuminate the CEL/AWL for the duration of the fault being active.

Section 43.3.2
Verify Repairs

Perform the following steps to verify repairs:?

Reassemble the engine.

Start and run the engine.

Perform a road test.

Check for logged codes.

For Series 60 engines, refer to "20.18 Exhaust Gas Recirculation System Basic Checks for Series 60 Engines" or call Detroit Diesel Customer Service Center(NNN) NNN-NNNN.

If no codes are logged, repairs are complete.

 

J.R., Technician
Category: Heavy Equipment
Satisfied Customers: 7444
Experience: 13 years as warranty technician for Detroit Diesel
J.R. and 3 other Heavy Equipment Specialists are ready to help you
Customer: replied 5 years ago.
Hi JR, Well we got the truck into the freighliner dealer nearby and it turns out that there are only four sensors that will completely shut down the truck and they happen to be temp for oil and water and level for oil and water. The dealer replaced two of the four and so far so good. We left this morning and haven't had any problems as of yet with the truck.... gone 600 miles so hope that fixed the problem. Thanks for you're time. Customerbr />
Expert:  J.R. replied 5 years ago.
Glad to hear your up and running. Let me know if you need anything else in the future and I will try to help you.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka - Moose)

    Technician

    Satisfied Customers:

    112
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka - Moose)'s Avatar

    Chris (aka - Moose)

    Technician

    Satisfied Customers:

    112
    16 years of experience
  • http://ww2.justanswer.com/uploads/Boxerman1969/2009-06-22_213107_ja_avatar.JPG Tim's Avatar

    Tim

    Foreman

    Satisfied Customers:

    338
    23 Years Heavy Equipment and Truck Repairs Shop and Field in the Minning and Construction Industry
  • http://ww2.justanswer.com/uploads/jrwhitey2000/2009-01-03_193237_me.jpg J.R.'s Avatar

    J.R.

    Technician

    Satisfied Customers:

    148
    13 years as warranty technician for Detroit Diesel
  • http://ww2.justanswer.com/uploads/yellowman99/2010-03-20_033822_Marshall_Pete_Furr.jpg Cat Man's Avatar

    Cat Man

    Caterpillar Engine Expert

    Satisfied Customers:

    3706
    23 Years Caterpillar Engine experience.
  • http://ww2.justanswer.com/uploads/WT/wtolkson/2012-6-8_12723_JApicture2012.64x64.jpg Wayne's Avatar

    Wayne

    Journeyman

    Satisfied Customers:

    3017
    34 years experiance as engine rebuild and problems.Thermo-King repair and trouble shooting.
  • http://ww2.justanswer.com/uploads/cumminsdr/2010-7-20_204410_ja.jpg DR.Cummins's Avatar

    DR.Cummins

    FIELD SERVICE TECHNICIAN

    Satisfied Customers:

    2352
    16 Years working on Cummins Diesel engines,
  • http://ww2.justanswer.com/uploads/KO/koboma/2012-6-6_20917_DSCF1022.64x64.JPG Curtis B.'s Avatar

    Curtis B.

    service manager

    Satisfied Customers:

    2226
    30 years exp. with diesel engines, heavy equipment and forklifts, including lp forklifts