Mackpro
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Everything posted by Mackpro
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08 mack mp8 low oil pressure shut off at highway speed
Mackpro replied to Zackmcc's question in Mack Truck Q & A
Mack went through 3 or 4 part numbers/ suppliers of the oil pressure sensors. Mack sent out a bulletin warning that some counterfeit sensors even made it into the parts system. It’s possible you got a bad one -
Last I checked, there is no stock at the Mack warehouses and doubt they will be made anymore. Message me your email and I can get you the bulletin. I think it has the earring diagram showing how’s its wired up
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Did your T-1 temp every get hot enough to alolow the 7th injector yo start dosing fuel?
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A 1994 350 VMAC takes 313GC5205P1 injectors. A non VMAC 350 takes 313GC5188P12 injectors
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A 1994 non VMAC EM7 300 takes 313GC5188P10 injectors. The reman number is same but add a X at the end
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Is it V-mac or non-V-mac? On the 300 is ask for e-7 300, em7-300 and e7-300 v-Mac and all 3 use different part numbers
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If a CXP you can press and hold the button under the dash display and it will reAd out the MID codes
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If air fan clutch. You should have 12 volts going to the fan clutch solenoid straight from the fuse box. The other wire ( ground) goes to the engine ecm. The engine ecm makes the ground internally to disengage the fan clutch. When the engine ecm sees hight coolant temp , high AC head pressure or high intake temp it opens the circuit ( takes away the ground ) and the fan clutch engages.
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What kind of fan clutch ? Air or electric?
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I know they come with 10/30 in them but unsure of the brand . At one time it was Delo 400.
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The fuel supply pump is mounted to the power steering pump then the power steering pump is bolted to the timing gear housing. If it leaks fuel out of the weep hole where the two bolt together then I would replace the complete unit. They call it a “tandem pump” . There is a service bulletin on replacing the complete unit versus just the fuel pump due to an alignment problem that could occur causing the fuel pump to go out again.
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Only the top O-ring on the Mp injectors is used . There is a mark on the fly wheel for top dead center . You can also look in the front of the camshaft. It has a TDC mark on it too.
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We have tried putting o-ring kits in the CCV blow by filter spinner thing . But they usually still leaks oil so we now replac the complete unit. It kinda high dollar I believe, around a grand I think.
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Help decodeing Vin # 1M2P289C7XM029160 1999RD Specs
Mackpro replied to Jomorisn's question in Mack Truck Q & A
It’s a ETECH E-7 300hp with a T2060 Mack 6 speed trans. Buil 1/21/1999. Mack rears with 5.02 gears. 44k rear camelbacks and showing a 14.3K front axle -
This truck has the first generation ETECH engine and is a 355/380 Hp with 1560 foot pounds of torque. Eaton rears with4.11 gears. And the smaller fuller 10 speed trans. Built on 6/7/2000. The Mack warranty data base purged all the old warranty records on this truck and pretty much all Mack’s with a grey motor. I would be shocked if it has the original camshaft in it .
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Last year I still saw new MRU’s with manual transmissions. Theses were all concrete pumpers . I believe it’s due to the driveshaft driven concrete pump used to pump the concrete up the boom piping. A small local county refuse service here still orders a new a MRU every 4 years and they are always Mack’s manual transmissions.
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That Vin doesn’t sound correct. The last 6 should start with a 0. You might be looking at the sequence number instead of the Vin. For some reason Mack starting putting “sequence “ number stickers on the door jamb and things got mixed up a lot back then
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What’s crazy is that when I was working at a Mack dealership, we couldn’t get them either. We had to rob them out of new trucks and copy them on the copy machine and stick the originals back in the trucks.
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Mack truck e7 CX613 2001 low boost intermittent.
Mackpro replied to Ali Carmona's topic in Engine and Transmission
You got a regular ETECH 460 engine, not a CCRS 460 which is good in this case. Late 2001-2003 were CCRS ETECH engines. These were improved versions of the engine you have now. The ones that were 460 HP had a waste gate turbo that’s caused lots of boost pressure issues. Lucky you don’t have that engine. The engine you do have is known for cracked and leaking intake manifold gaskets . They now make steel core gaskets that correct this. Yours really sounds like there might be some electrical issues though. Is the red X or yellow lighting bolt come on the dash when the issue occurs? -
Mack truck e7 CX613 2001 low boost intermittent.
Mackpro replied to Ali Carmona's topic in Engine and Transmission
Is it a 460 HP with the wastegate turbo? M -
If you took the actuator off the turbo you need the Tech Tool program to calibrate it and re-install it correctly.
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My buddy ordered another GU/GR last week and it will be 9 months. He always orders custom colors and lots of options plus Allison trans if that matters. Some of the big dealers can bump you up into their already assigned stock slots and speed it up some so I’ve heard.
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Yours is a 415 HP. In 2009 the biggest MP8 you could get was 485. The 505 didn’t start till 2010 with the DEF/SCR engines.
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All the new trucks with the new Anthem style dash (includes the GR series) now have the dreaded LCM ( light control module) that’s was brought over from Volvo. This further complicates the usual simple troubleshooting of lightning issues you might have . I have not tore into the dash but there’s a good possibility the DRL override harness is already there.
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It’s a kit from Mack that converts only certain VMAC 1 ( 2 Ecm’s) trucks to VMAC 2 ( 1 Ecm) . I’ll see if I can find the bulletin.
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