What should DEF pressure be?
If they are within 4 PSI of the ambient air pressure, they are reading correctly. If 4 PSI or higher, then you need to fix the DEF pressure and/or the DEF air pressure sensors.
What happens when you get low on DEF?
Generally, a warning light will come on when DEF needs to be added soon. If the light is ignored for too long, the vehicle will likely go into a reduced power mode. If the DEF level falls too low, the engine will not start until fluid is added.
What does speed limited on GMC Duramax mean?
200 miles down the road the “Speed Lmited to 55 mph at next Restart” message shows up. WTF, now I am pissed. I pull over, add DEF while running, and call a dealership 20 miles down road. I pull in to a parking lot next to dealer, shut truck off and unhook trailer. Start truck and get svc def and speed limited message.
What does Def stand for in diesel exhaust fluid?
Cummins Filtration has provided DEF, previously marketed under the Stableguard name, to the stationary market for over 5 years. DEF: Properties & Handling Guidelines Q. What is Diesel Exhaust Fluid (DEF)? A. DEF is the reactant necessary for the functionality of the SCR system.
How does Def work in a Duramax engine?
Diesel Exhaust Fluid (DEF) Warning Strategy (Anti-Tampering) The reductant system supplies the Selective Catalyst Reduction (SCR) stage of the vehicle’s exhaust aftertreatment system with the Diesel Exhaust Fluid (DEF) required to reduce exhaust Oxides of Nitrogen (NOx) levels.
Do you think DEF system is a bad idea?
I really thinks this DEF system is a bad idea. Location:Where ever the wheels stop ? Could you post the make, model and year of you engine. Could you also post how much DEF you have used. I understand that changing out all the DEF because of some bad DEF kind of troughs thing off. and a crushed supply line is not a nominal problem.