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I am dealing with a 3126, ESN#: CKM04500 in a 2000 sterling…

I am dealing with...

I am dealing with a 3126, ESN#: CKM04500 in a 2000 sterling chassis and am having trouble with a very intermittent CEL and loss of throttle control. Driver states he pulls off, key off, and truck starts up fine with no CEL. Some days it happens more some days it doesnt happen at all. usually happens when loaded. No codes have been stored in the system and i am not the driver so i cannot obtain the flash codes when this happens. I have replaced engine position sensor harness due to wires being bare near the sensors. Replaced the IPR (another truck had similar symptoms that this fixed), all 6 injector O-rings as a precaution (removed them to inspect). Noticed a slight black tint to the fuel so i am now suspecting an internal leak in a fuel injector. After sitting for a couple days the truck will fire up, run fine for a second, misfire for a couple seconds, then smooth out. Just wondering if i'm missing something, since i cant think of a way to narrow down what injector and don't want to put thousands of dollars of injectors in a truck we will be getting rid of next year.

Mechanic's Assistant: What is the complete model and serial number of your machine?

2002 sterling accetera ESN# *****

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

Everything should be included in the original message

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Answered in 3 minutes by:
8/15/2019
Technician: Cat Man, Cat Engine Expert replied 3 years ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
Thanks for asking your question. I will try and help you out.
If the fuel is turning black. It’s oil. Unfortunately there is no way to determine which injector is causing it.
If the light is coming on. There is a code. Need to have someone read the ecm.Please reply back if you need more help. I am happy to assist.
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Customer reply replied 3 years ago
When reading ECM with CAT ET there are no codes active or stored.
Technician: Cat Man, Cat Engine Expert replied 3 years ago
I see. Then I just assume there is a faulty light or ecm turning it on.
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
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