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roybelding
roybelding, Shop Foreman Freightliner trucks
Category: Medium and Heavy Trucks
Satisfied Customers: 4656
Experience:  Shop Froeman for Freightliner Trucks
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Well have a 2008 ftl Cascadia. With a Detroit seríes 60.

Customer Question

Well have a 2008 ftl Cascadia. With a Detroit seríes 60. DD6. With fualt code 654 14 injector cylinder #4 needle control valve abnormal operation. WE have replaced the MCM. Also r&r both harshness. All 3 rear injectors. Checked ground & batteries connection. WE have followed the steps on the ftl troubleshooting from the dia link?. Any help would b appreciate.
JA: What is the complete model and serial number of your machine?
Customer: Engine serial # 06R0997350
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: Model Detroit series 60. DD6.... I will add. That the same codes are the same. As there were on the old MCM. ALSO has 655 14 & 656 14.
Submitted: 21 days ago.
Category: Medium and Heavy Trucks
Expert:  roybelding replied 21 days ago.

hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.

Roy

Expert:  roybelding replied 21 days ago.

ok, after you replaced everythng, did you go back over the flow chart and re test???

Roy

Customer: replied 21 days ago.
I will also add. That the codes come & go.intermittently
Customer: replied 21 days ago.
No, we did not.
Expert:  roybelding replied 21 days ago.

ok, I would start back there. from your description. it sounds like a harness isse.

when you said both harness, did you mean engine harness and injector harness???

Roy

Customer: replied 21 days ago.
Both engine & injector harness. have been replaced. Injector 1 twice. & fault code r the same. New & old harness?. With new MCM
Expert:  roybelding replied 21 days ago.

injector 1?? the fault code is for number 4??? please explain

Customer: replied 21 days ago.
Fault code r. 654. 14, Injector cylinder #4 neddle control valve abnormal. 655 14 Injector cylinder #5 neddle control valve abnormal operation. 656 14 Injector cylinder #6 neddle control valve abnormal operation.
Expert:  roybelding replied 21 days ago.

I understand that. you just stated you replaced number 1 injector??? just making sure as it not involved.

the main harness to the body, is that connector in good shape???

Roy

Expert:  roybelding replied 21 days ago.

ok, backing up a bit, what did find out of spec in the flow chart that led you to replaced all those parts???

Roy

Customer: replied 20 days ago.
We originally, started with replacing the injector. Then the harness. Then the outside harness then. The mcm. WE followed the día link after we replaced all that. & still same codes appeared. Original fault code was 655 14.
Expert:  roybelding replied 20 days ago.

ok, so you replaced all the parts and then did the diag???

what were the readings for the injector resistance on number 4 injector???

Customer: replied 20 days ago.
We don't have the readings. Didn't write them down.
Expert:  roybelding replied 20 days ago.

like I stated before, you need to re do the check list as you have missed something.

Roy

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