Shahid

Thanks for your help. Can I put an override dash switch for this?

Hi, Have a problem with when I start the truck in morning, the fan keeps going full speed and truck does not warm up even if I idle for half hour. Once I drive for about 5 km's the fan disengage's. This is an issue because in canadian winter it becomes a Popsicles before it starts to warm up. It is electric BEHR clutch on this. if i disconnected the wire the to the fan clutch still runs same on start up. Is there a way to shut it off manually or does it have a problem I should look at Thanks for your help.

The oil pressure sensor works fine because just had it changed and I have more pressure when engine is cold and less when it's hot. This is a 2007 mack vision cxn613 e7 engine not sure of exact type.

The engine brake once the oil pressure goes down does not work properly. When I change the oil it runs good for a couple weeks but get the same problem again. All I sea is lots of smoke coming out of where you fill oil when engine is hot. The most recent oil sample said 3 percent fuel. When I change the oil truck runs like new for 2 weeks. Oil Temprature hardly goes above 190. It is the engine oil psi I am talking about with new oil stays around 10-15 hot idle and goes to 30-40 with acceleration. Once the pressure goes down 8-10 hot idle and doesn't go up to 20 psi with acceleration and has low power. I drive in city. Thanks for the help.

Has only one active code and that is for compressor discharge temperature.

The oil is normal not overfilling after fix. I got a sample checked.

Two problems, first the truck can idle all day in the canadian winter morning and not get any heat until i drive it about 5-10 km. Second the truck with engine oil temp at 190 has less than 10 psi of oil pressure and with acceleration will just reach 18-20psi. It has only one active code for compressor discharge temperature SID 270. The truck never use to fall below 10 psi and would reach to 30 with acceleration, which is normal for this engine. Under 20 psi with acceleration it has less power with turbo not working good and can see oil coming from blowby tube. I had the injector o rings replaced at mack because one leaked and diesel was mixing with oil. The sample came back good after a month of driving but oil pressure never came back. It has 50-60 psi of pressure in the morning when cold and drives normal up to when engine oil temperature reaches at 150. If anyone has any idea or has had this problem. Thanks