Mackpro

A customer of ours has close to 50 asphalt dump trucks and 90% Mack. 20 of them are 2013-2017 GU's with MP7 and MP8 engines and 2 are M-Drives and rest Allison autos. A couple have been back for software updates and 1 for a particulate matter sensor. Other than that zero issuses.

I allways tell everyone to unplug engine ECM and check for coolant the connector/ECM area. Seen it way to many times

Not much info on troubleshooting code but pointer on flywheel should be on "0" and then on "TDC" on camshaft. If early MP7 with no DPF use timing marks on rear of cam. Sometimes the marks on the rear dont match the front.

The ambient are temp sensor is located on the front cross member on drivers side. Its a green sensor in front of the radiator. This option can be turned off by a reflash from a dealership

I did a cam job on a 1994 E7 today. I like the old trucks ! Yep , stand up oil/filter change!

Yep, we had just as many KW's in derate as we had Macks this week.

Ahhhhh that European Reliability.......

Yes , your at step 12b

What's last 6 of vin? And CV713 ?

Being the code is for low EGR flow. Either the EGR diff sensor is not reading correctly or the cooler is plugged. In the first bulletin it talks about the cooler being plugged and replacing the cooler and updating the ECM programming to prevent the cooler from clogging again. We always try the updated EGR diff setup and a engine ECM update. Then see if it solves issue. If code returns the replace EGR cooler, this is last resort as the turbo bolts usually break off and is never fun.

Dont waste your money on the throttle pedal. Hopefully you have the Step 12B in the vechicle module ( VECU) with the throttle pedal calibrated. The VECU is all about the throttle pedal not the engine module (EECU). So once the VECU is at Step 12B and throttle pedal calibrated your as good as it gets on that end. The rest is then in the engine module (EECU). Here in the EECU is where the different HP levels and special "Smoke files" or "Australian " files come into play. The VECU controls throttle, tire size, gear ratio, trans type, cruise control and road speed and the VIN is stored. Always keep your VECU with the truck. You can reprogram the EECU with different files from different trucks ( as long as ETECH to ETECH , AI to AI, ect)

if 2000CL713 had a code reader and could tell us the FMI it would help. If FMI is 8, I'd keep driving. FMI 8 is abnormal frequency response. This usually happens at cold start up and goes away as engine warms. Once or twice a week = ok. Every day then change EUP. If FMI is other than 8 then EUP or harness issues

Yep , that's new newest sensor but the Venturi pipe might not be updated

This bulletin might not be the newest but shows the old and new type sensors EGR Diff sensors.pdf

Your EGR Diff sensor. Does it have the round plug or is it the newer one with the yellow sliding lock? EGR low flow MP.pdf

Yes , the chrome one that covers the top of the EUP's

Heat is what kills them. Always make sure you reinstall your heat shields, they are on there for a reason. #5 and 6 seem to go bad first due to the exhaust pipe running right by them. On the AC engine #2 and 3 God bad due to right behind EGR cooler.

Yes, if one of the speed/timing sensors go out , you have to crank the engine about 6-8 seconds before it starts.

When you pull up your fault codes on the screen. The 5 is actually an "S" for SID. So you had a SID of 2. The MID 128 means engine fault. I attached the code list and harness repair Harness injector terminals.pdf 2008 MID fault codes.pdf

That would be a speedometer fault if that wasn't set correctly. I have seen your 3-2 code active with key on/engine off but once Engine started codes goes inactive

Most guys leave the sensor in when R&R a flywheel. It's easy to hit the sensor when installing the flywheel. I've seen clutch brakes come apart and bounce around and tear up sensors but that's mostly on the MP engines

I'll pull it up in the morning and see what we got on it

I'll attach some harness info in the morning and some injector info if I can locate it

Either injector or harness end at injector

Looks like # 2 injector open circuit, but let me make sure