Mackpro
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Everything posted by Mackpro
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They have now included some GU's and MRU's in the recall now. Also some Titans were included on the first recall with the volvos.
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2007 mack cxn613 with default code 88
Mackpro replied to ACG's topic in Modern Mack Truck General Discussion
None of my books have a 8-8 code, it jumps from 8-6 to 8-9. An 8-9 is a shorted EUP or EUP harness shorted. I usually start by removing all 3 Engine ECM connectors and cheking for oil or antifreeze in harness and bad or missing pins . If all ok there I then remove all the wires from the EUP's and check OHM's reading across the 2 EUP post , all 6 EUP's should read the same. Replace any that are way off. -
I got some pics sent to me of a cut-away of a MP8 common rail engine. I will add them when there is an offical Mack anouncment as I dont want to get the guy in trouble that sent them to me. Looks like its all under the valve cover and its cramped under there. Also pic of the optional turbo thats it some how hooked to the flywheel ( improves MPG) . Also the "Cleartech" DPF/SCR unit all made into one unit to save space. Some really crazy/cool stuff comming out of Mack these days.
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Im now unable to attach PDF files or pics. Never had this issue before. When loading , it says something like "error while loading file" . This is on my Windows 7 Toughbook in internet explorer . Anyone else have this problem?
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06 vision busted frame
Mackpro replied to farmer jon's topic in Modern Mack Truck General Discussion
Seen alot of that years ago with the local chicken trucks. Mack has a service bulletin on it but I cant seem to attach it. Its SB121031, Hopefully someone else on here from a dealer can attach it. -
Another vote for Injectors. Putting a set in now as we speak.
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Mecanical E7-350 oil pressure sensor location?
Mackpro replied to Nightwolf769's topic in Engine and Transmission
Follow the plastic or braded line on top of the filter stand to the firewall. It should go to the bulkhead pass through on the fire wall. Take note of were it goes in at, then look inside the cab and fine where it comes through. The sensor should be on a "Tee" where the line comes through or on the bulkhead pass through above or below where the line comes through. -
Ford finally puts its 3.0 V-6 diesel in the F-150
Mackpro replied to kscarbel2's topic in Odds and Ends
I would treat any of these new diesel pickups just like BMW's, I would not own one unless it was covered under the factory warranty! -
All 4 are different and wont cross over to each other. Only the ETECH injector will return fuel through the head that its dosent use. CCRS and ASET AI and AC injectors return no fuel. Unknown what "pop" pressure or flow specs are as the Mack tuneup books no lonnger have that info.
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We have lots of "rust throught" issues with oil pans here. Also the oil level/temp sensors seem to leak alot.
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Was a valve spring broke? We had a high mile MP-8 that had a ticking sound in the top end. It was a broken valve spring but driver kept on driving it till it dropped a valve. After that we always pull the valve cover and look for broken valve springs when we have a ticking noise in top end. We had a couple of 04 emission MP-7s with broken valve springs and the 09 MP-8 and thats all we have seen here.
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Remember that 2010 and up SCR/DEF trucks have 2 NOX sensors
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We sold alot of CTP and CXP trucks because everyone knew the DPF engines were coming out the next year. Every one that we sold are still running. We had a few with broken rings , bad cams and turbos and that was worst that we saw.
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You could only get a MP-7 (non-DPF) in a CTP, no MP-8 for that model. The CXP and CTP were only in 07 i think. You could get the 7 or the 8 in a GU. I dont know about the frame differences if any.
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We have seen this alot. We have not found an answer. We have seen the discharge line fitting get clogged with carbon and be slow to build up air. We remove fitting and clean out and all is good for a while.
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Yes , It should work on all ETECH's that are 427 or 460 HP with the plastic fuel return line from the heads to the overflow valve on the side of the block. Not all 2002 engines are CCRS, I have seen regular ETECH's in 2002. The plastic fuel return line gives it away as being a regular ETECH engine.
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Yes , It will.
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Did the issue ever get resolved? I just hear from someone at Mack that the twin-Y ride rear suspension is to blame. Have you had the "trailing blades" replaced with the new ones that have the thick piece of plate steel riveted inside. I have done 4 so far here at our shop. The guy at Mack said the orignal trailing blades were to thin and flexed causing steering issues.Sorry I didnt read all the post's and now see you did get the issuse resolved.
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the differaces between mack ac and ai engines ?
Mackpro replied to 41180's topic in Modern Mack Truck General Discussion
In 07 you could get the CTP or CXP with a MP-7 with no DPF exhaust filter. No MP-8 option for that year. In 08 the MP-8 came out and it and the MP-7 came with the DPF exhaust system. The model names changed to the GU, CHU, CXU, MRU and LEU. -
To do it right would require lots of parts I would think. A combination of ETECH and CCRS parts might work.
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Its a switch on top of the transmission, looks like a reverse light switch. Just a few of the Mack trans have them. I assume only the ones with extra low hole
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On the injectors you have to use 1999/2001 ETECH injectors. The CCRS and AI/AC ASET injectors will not work at all as they have no fuel return out of the injectors. The 99-01 ETECHs have a plastic fuel return line out of the top front or top rear of the head down to the fuel overflow valve on the RH side of the block above the air compressor. The CCRS and ASET engines do not have this plastic line.
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I do it all the time. They need to act like they are reflashing/reprograming your current engine ECM to the VIN of the 460XT truck. The same a customers buying used ECM's and bringing to us to have flashed/programmed to their current truck. As long as your current ECM part number matches ( or is on the list for possible matches) the part# of the 460XT truck. The vechicle ECM in the cab stays the same and is not programed.
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Specs on a E6 4 valve head are 19-27 psi of boost at full load
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A 93 400 VMAC should be around 24-32 psi of boost according to the 1993 Mack tune up book. Maybe blown intake gaskets. They now have steel core intake gaskets
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