My cooling fan is not working on vnl670

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2012 Freightliner Cascadia with Cummins ISX... 3 Fault Codes ...

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Feb. 15, 2019 · 3 posts · ‎2 authors
I have looked for detailed Fault Code files and can not find detailed information. Thanks in advance. Fault 1: -Eng 0 -641 spn -Fail 11. Fault 2: - ... Cascadia with cummins isx ' TruckersReport.com ...
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Wiring, schematic, electrical diagrams, torq setting, error/fault codes, full assembly/dissembly, service instructions and a lot moreetc are basic contents of these online books they here on this websitehttps://big-manuals.com/products/cummins-signature-isx-qsx15-engines-service-repair-manual
Must check it out

170 F is 76.6 C which is around 10 C lower than is required for diesel engine operation
Cummins have thermostats at various opening temperatures and it is in this area that you should be concentrating your search
How it works
coolant in an engine is recirculated until engine operating temp is reach ( around the 85C mark) at which point it starts to open
That allows water to pass to the radiator and the air cools the coolant by air passing through the fins The coolant flow is low and so the temp keeps rising until the thermostat is fully opened and full flow is through the radiator
Now if there is insufficient air flow to lower the coolant temp as in slow moving / heavy load and pulls , then the fan clutch cuts in to assist with the air flow
so back to you statement , what you need is a thermostat with and opening temp or 85 C(185 F and fully opened at 95C (203F)

You will find what means all that fault codes here:
Cummins Signature ISX and QSX15 Factory Manual Repair Servic Download...
Good Luck!

have an accredited ac specialist check out the system as you may have a leak in the condenser unit and it shut down from low pressure in the system. If there is a problem in the automatic module the shop should be able to diagnose that as well.

You will find some simple instructions here, about how to do it manualy.
How to reset oil manualy : Cummins Signature ISX and QSX15 Factory Manual Repair Servic Download...

i have a 2009 volvo 670 automatic transmission. i have a fault code for the transmission. RANGE LOW ACTUATOR
( VALR )
ELECTRICAL FAULT
INACTIVE.
does anyone what those codes mean?

Fuel line. Check fuel filter and fuel pump. I fixed like this engine fitted on Iveco and Freightliner and other Prime movers.

I have a 2007 Volvo 670. The check vehicle ecu comes on. The fault code is MID 144 PID 191 FMI 5. THe truck won't go pass 1400 rpm, the speedometer doesn't work, the cruise doesn't work, the engine break doesn't work. I have to turn the truck off going down the road at highway speed for about 10 seconds and it'll go back to normal. Can anybody help?

You will find step by step instructions on this software .. Download from here: Cummins Signature ISX and QSX15 Factory Manual Repair Servic Download...