Mackpro

What’s the exact model and last 6 of the VIN

The easiest way would be to ask the local dealership to do a horsepower request and see if corporate Mack will turn on the XT program for the new truck. If they will it’s Usually around $300 for the download and a couple hours labor to do it . There are ways around this but it requires dealership access and someone who knows how to trick the Mack mainframe into thinking your installing a new engine ecm on the XT truck . All the old guys who did this stuff where I used to work are gone or retired. I don’t know if the can even program a grey engine ecm any more .

Yes that CV shows it , relay/timer part number is23851995 , no where in stock . Harness is 25187825 and it to no stock anywhere.

I looked up a CV713 with that VIN but it didn’t show it having heated windshield. But there are 7 different CV trucks that have the last of the VIN 001007. CV513,CV533, CV712, CV713,CV500SG CV700GK and another with just only a VIN number

After looking this morning the only wiring diagrams I can find are for 2007 and up MP engine equipped trucks starting with the CXP-CTP trucks and all the way to the newest trucks, looks to be a simple circuit with a 20 amp fuse feeding a dash switch and also a 4 prong relay , turn on switch and this activates the relay sending 12 to the windshield. You could get this in the standard 2 piece or one piece windshield. As far as the relay goes , I don’t know it it’s just a standard plain relay or one like the the heated mirrors and has a timer in it

I have never seen one in real life. Only in the option sections of wiring diagrams. I believe you can still order a new truck with it .

I think I have a wiring diagram at work for the heated windshield on the granite. Hopefully I’ll remember to look tomorrow

We did up graded the “Fleet” shifter to the “Performance” or as Mack called it the “Premium “ shifter in all the used trucks we sold at the dealership. Best I remember the shift key pad was around $500 then a couple hours labor max . Installing the key pad is easy but the harness connector is very tricky to figure out . I remember breaking at least one . The dealership then has to have Mack turn on the transmission ECM software download . Then do the download and then turn on the parameter . There are 2 different settings. One is when you push the “P” performance button it will stay in performance mode till you hit the “P” again. The other setting is after hitting the “P” button, it will go in performance mode till it feels it’s no longer needed the back to normal shift mode.

The AI engine and the CCRS engine use the same part number EUP’s so it’s entirely possible. Engine brake type would be a concern I would think . There is a good bulletin out there that has all the part numbers and info for engine type and engine brake type used

2-7 code on a Aset engine is the oil temp sensor. It a 2 prong sensor next to the oil pressure sensor which is behind the rear most oil filter . This sensor is usually damaged when replacing the starter.

The override might actually work after all , I just read the bulletin I attached and it said there is a over ride switch for the electric viscous fan, . There are two different harness connections for the 2 types of ECM controlled fan clutches. There are 3 settings for the fan clutches on the ASET’s. “Smart Fan “ which is the electric viscous, “ On/Off” is the air fan setting, then there is the “None” which is a regular viscous fan. If you select the “On/Off “ setting then only the 2 wire connection at the rear of the engine harness will work, it would connect to the fan clutch solinoid for a air fan . If you choose the Smart Fan setting then only the connection at the electric viscous fan clutch will work. Also choosing the On/Off setting you are able to set engagement and disengagement temps and run times . The fan clutch is controlled by the engine Ecm but the override settings are controlled by the vechicle ECM ( VECU).

Looks like it’s just 1 degree .

There is as no option for fan override on the electric viscous fan for the Aset engines that I ever saw. The option was available for the air fan though. I have seen guys use a dash switch wired in line with the green high pressure AC switch up by the radiator. Cutting the power to the AC switch makes the engine ECM think there is high AC pressure and turns the fan on .

https://pdf4pro.com/amp/cdn/service-bulletin-mckenzie-tank-lines-685fa.pdf This explains operation and troubleshooting of fan clutch. The colder the weather the longer it takes to disengage after cold start .

This is normal operation

For the ASET engine family I only remember there being 2 different water pumps. One of the AI engines and one for the AC engines. The pulley diameter was the only difference. It was very easy to put the wrong one on and saw it happen quite a few times. The belt might be a little tight or loose but they will easily bolt up and cause cooling issues

Somewhere around 2002 Mack made the coolant conditioner filter an option. That $50 option cost way way more 8-10 years down the road,

I believe this was a factor option exhaust brake . I think it was called the Stealth Brake. Saw a few stick closed and cause issues yo say the least .

The AC and AI engines have 2 thermostats , if one to stick it can cause overheating. Also , if the engine does not have a coolant filter or the coolant SCA levels are out of range , it can cause corrosion in the cooling system. Pull the water pump off and look into the aluminum housing that’s bolted to the block . It should be smooth. I’ve pulled several water pumps off and had severely pitted housings that caused overheating.

Might be a clogged oil cooler inlet screen . I remember the AC engines having them but was unsure if the AI engine had them . This bulletin says both engines had them . http://www.engineprofessional.com/TB/TB011816-1.pdf

That hole is for the turning tool . Usually has a rubber plug filling the hole. Possibly rear main crank seal leaking if oil is coming out of it .

https://f01.justanswer.com/diesel3153/b783e0a3-7099-4672-8fa2-def5c4dff508_Mack_engine_speed_control.pdf Follow instructions on bottom of page 1 and top of page 2 . Common issue

https://www.macktrucks.com/parts-and-services/support/body-builders/manuals/heavy-duty/. Here free access to the manuals for setting up PTO settings

I believe there are parameters that the dealership can program to allow you to do what you want to. In this case .

On this truck., mack warranty time on just the head gasket is 18.5 hours but you can add on test drive and steam clean and take charge time and that would be .9 hours . And diag time can be added as well up to 2 hours .