Vmac3
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Everything posted by Vmac3
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Maybe the Mods here can put a separate section for him where people can visit to have their problems solved. I don't know, maybe call it "Ask Len. Your One Stop Shop For Problem Solving. Cuz I've Been There, Done That". V
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Sounds like its an intermittent problem. To answer your question, no. The ECM sees an electrical fault (open circuit). Try leaving it unplugged and see if the shutdown light turns on. Is the malfunction indicator light on? Coolant temp will cause it to shutdown as well. There should be 2 sensors at the rear of the water manifold. The one sensor at the very back of the water manifold is the coolant temp sensor. Unplug it and see if the trucks shuts down. Hope this helps V
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About $2:20 a liter of diesel where I live. Cost me $140 dollars to fill up. V
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2009 MACK GU813 Excessive Black smoke/ plugged DPF in 3 days
Vmac3 replied to Wasteman1's topic in Engine and Transmission
Another thing that causes excessive black smoke that a lot of techs overlook (self included) is the engine air filter. I had a MR US10 emissions where it did the exact same thing. Checked everything under the sun and days into this, I noticed the air intake pipe was behind the exhaust pipe sucking in the soot that was belching out of the exhaust. The air filter must of weight 45lbs. The air filter was never changed which caused the excessive soot. I changed the air filter, repositioned the air intake and never saw the truck come in for the same problem. Don't know if this will help. V -
Happy belated B-day. Blessings to you and yours. V
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So basically the Mack dealer did not double check the VIN and mileage when the truck came in? That is what I am gathering here. A lot of original parts prone to failure, turbo, egr cooler exhaust manifold, rotted dpf housing etc.. Point these out and to the seller and explain your concerns. Hope this works out for you. V
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If it's too good to be true, it usually is. Glad you got the service history. Walk away. V
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No. I would however look at that coolant piping along the passenger side frame rail and going into the heat core. That looks really rough.
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Looks like this truck sat for a long time. Even the turbo gasket is rotted.
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Its tied into the user ID in PTT. Who knows where this truck had repairs done right? Repairs done while it was covered by warranty will show up at any dealer.
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Sure, wouldn't take anytime for the dealer to check it out. Hopefully they will help out. Looking at these pics, the turbo, egr cooler and exhaust manifold don't look like they have been changed. Original paint on the cooler, turbo and the old style exhaust manifold.
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Is it a good buy? Well, from what we know so far I would say yes. The interior is a good indicator of wear and tear. Looks good so far. I would strongly get a repair history before you pull the trigger. V
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The engine hours is one part of this trucks life. You need to get the complete vehicle history. The service software will show the vehicle data. 1. Engine hours 2. Idle time 3. ECU serial #s 4. True mileage If this truck was a highway truck with those engine hours and that mileage, then I would be very weary. This would indicate some type of screwery going on. But if it is a yard truck then maybe it can be justified. If you go to your local Mack dealer and ask if they can pull up the warranty history on this unit, then the mileage will be recorded on the work order at the time of service. V
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Without removing the valve cover, you really won't know for sure. But the dealer should have a record of it. V
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How many engine hours on this unit?
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B-73 Restoration
Vmac3 replied to mattb73lt's topic in Antique and Classic Mack Trucks General Discussion
Its going to look great when its all complete. I have a question on the locking wire. Was that a standard practice to lock the flywheel bolts back in the day or was it something you decided to do? I am not being critical, I just want to feed my own curiosity. Thanks V -
Joey is correct. Its like unplugging the fan on your PC.
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You may have a short to power. V
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Those speed sensors are variable reluctance. They induce their own A/C voltages. There is no specific voltage to test that is being generated by the sensor. The 5V signal that you see in the schematic is a sensing voltage to inform the ECU if the circuit is good or not. The only way to see if the signal is good or not is to hook up an oscilloscope and watch the A/C signal that is being generated. V
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Your engine is an ASET-AC engine. THE ASET-AI was used in the R models, Granites and MR's. Basically used for construction. The ETECH and ASET_AC engine blocks and fuel system are the same. Just the emissions stuff is different. Imagine your engine without all the steel piping and egr cooler and a smaller turbo. Then basically you have an ETECH. V
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No. It reared its ugly head on these ones as well. V
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Here you go. Sb213018.pdf
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2007 Mack CXN613 E7 low PSI Engine Oil
Vmac3 replied to Shortdawg67's topic in Engine and Transmission
Yes you would be correct. One absolute thing you would notice is the engine brake will not work and the top end will be very noisy. V -
Those fuel transfer pumps are prone to failing. The drive gear slips on the shaft its pressed onto. Double check to see if there is any debris in the bottom of the fuel tanks. Also, if you can run an external fuel line right to the transfer pump to bypass the complete fuel system. Prime the fuel lines and see if it starts. If it doesn't then that pump is no good. Once you get the truck running, you may want to replace those fuel lines. I I believe there is a safety campaign that describes the procedure. V
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I am pretty sure those engines had sealing washers on those injectors. They are probably stuck to the underside of the injector or still in the cup. v
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