Mackpro

Good Evening to all. Leaving corporate American for a seat in a Mack CH613 with a 42" sleeper. Wondering with 555k how reliable these units are. Engine is a E7-355/380 E-TECH. Got a 100k powertrain warranty with truck. Thanks in advance for any info.

We bought a fleet of 2002 CH613's with the 355/380 and resold them all. We have had vey good luck with them, they are the more refined version of the ETECH engine ( Mack calls them the "CCRS")with most all the bugs worked out. We have even bumped the HP up to 427 and 460P on a few, The 460P bump was quiet $$$$. The 355/380 puts out the same FT LBS of torque as a 427HP (1560 FT LBS if I remember correctly)

FJH, went back to the garage tonight so he going to have a few hours on you

Starting to snow here so he might have more than a day head start. Might stay at home and play with my kids in the snow!

I was in luck as I had to change out a Mass Flow sensor/tube today on a 05 CXN, was not under warranty so I kept the old sensor/ecm. Hopefully tomorrow I will get to start playing with the mass flow ECM and making a EGR valve block off plate. Had 4 MRU's come in today with DPF problems so tommorrow will be busy.

Its been my observation that the puter don't care about the egr valve position! It looks for the target if it don't see the value it simply opens the valve more!

If the egr cooler is pluged what code do you see?? I have had egr valves fail with no codes!!!I ve seen pluged egr coolers no codes! you can hear they arent working right.

I was thinking the same about the plate we have several trucks I got in mind for this! If the flow is not there it simply opens the egr valve in turn it doesnt let the turbo spool but if there is a plate there like I said before, theres no place to go but out!!!!????

I think it would surley set a 4-9 FMI7 code. Service bulletin SB214037 talks about this. It would be fun to try and see though.

I had the same issues with my 04 Granite with the AI427 and the 06 Granites from the fleet I worked for before I bought it they had AI460's with 8ll's and 4:42 rears with tall tires. I can sympathise with the trips to the dealer for nothing I finally told them they could have 4 new trucks back and we would go buy KW's and amazingly they reprogrammed them all and they ran better they even smoked under a load. I bet they are stuck dealing wiht the EPA crap that was there hold up on ours they said they couldnt let them smoke so they wouldnt make much power but when that $500,000 dollars worth of trucks was gonna come back 4 months after they were delivered they found the power in them. I will say this they have to be run to 1800 rpm I hate to do it since I am used to pump engines and early E7's and they run best under 1600 but the AI engines you have to take to 1800rpm before you shift or they dye with a load. I tried to drive mine low in the power band and it wouldnt pull itself out of a wet sack, if you get 74,000 groos on one of those 06 models with the AI460 and let the rpm fall under 1350 youve had it. I wish you luck and heres to hoping they can get the MP8 to run reliably cause the MP7 is gutless too in my book(course I got used to an E9) Ryan

One of our problem child's was same specs as your AI427, 8LL, but with 4.17 gears and tall 24.5's. We fought with this truck for months, owner was used to a 500hp Cummins so our salesmen sold him this truck, wow what a mistake. Mack spent close to $40K on this truck to get it to run right. In the end they put in a super special secret "australian" engine file. Man did the black smoke fly and this thing really runs now. Unfortunaly those days are over and thoses good guys at Mack are gone and replaced with Volvo guys. Maybe only 2 I know of have stayed but Volvo have them on a tight leash. The only way to drive the AI engine is to have the pedal to the floor at all times.

I am here in Minnestoa and it is -20. I just realized that the Block heater cord on my truck was cut into two. I have a new cord but can't find the block heater plug on the engine!!! If someone could please help it would be great since there are no dealers open on sunday and I load early monday morning!!! Thanks

Patrick

763-245-2261

Look on the back of engine on the passenger side, you might have to stand at back of truck and look above transmission. To install new cord you might have to pull the floor board to get to it. When we install them on ETECH engine we pull the floorboard and knock out that freese plug and install. You could run an extension cord out to the truck and put a space heater in the cab and pull the floorboard and still stay warm. If you have a sleeper you would have plenty of room to work.

I did one thing Mack said don't do. I put a 1/4" thick flat steel plate in between my EGR valve and exhaust manifold so it can't transfer exhaust gases into the intake. I left all the sensors in place and the wires intact so it thinks it's still working. Not only did it lower the engine temp but it also gave me about 1/2 mile more per gallon on fuel.

i copied this post from a different subject. hope he doesn't mind? tell me what you think

I cant see how this would work with out the malfunction light coming on and possible engine derate. The mass flow sensor (steel tube with 2 welded in sensors) reads EGR flow and temp coming out of the EGR cooler when the EGR valve opens. There is a "target flow" that the ECM is looking for ( lets say 14 LBS) the mass flow sensor measures actual flow and compares the two readings and if there is a big enough difference (10 LBS I think) it will set an active code and think the EGR cooler is plugged or EGR valve is not opening and this could derate the engine. I would like to try it myself to see. Next time I have one of our "truck sales" trucks apart for exhaust manifold gaskets I can stick the plate on and test drive it. If I put the right ohm resistor in place of the flow sensor to tell the ECM it has 8 lbs flow( 8 LBS would be in the middle of the min and max flow) all the time I might get it to work.

tried the high beem button, got nothing. spent the first 3-5 seconds flip switch high beem, low beem, high beem flash for pass, and turning on 4ways. next 5 seconds waiting for my eyes to adjust enough to see the painted lines,and figured out turn off head light switch to kill dash lights helped the hole time wishing i had fog lights.

the next day i thought maybe it was a circiut breaker,i removed panel and noticed on the diagrahm the cig liter was a 20 amp next to head light wich is 25 amp thought i would switch them wat the heck,they had allready been switched.

the rocky mountains is a missarable place to be when you have lost faith in your equipment!

I have seen alot of Mack CX's and CV's with 20 amp breakers for the headlights but when I pull out the wiring diagram I notice it says "20/25 amp" so I have been replacing the 20 with a 25amp when ever we have any issues, dont know why the factory didnt put 25amps in all trucks to begen with? Also almost all CX and CXN's have the Federal recall for the headlight switch jumper harness. Its a jumper harness that goes in the dash and has 2 relays in it to take some of the load off of the switch. Over 2 years ago I was involved with the Mack engineers about a 2005 CXN that was having headlight switch problems and they used our truck for a "Guinne Pig" and sent us the homemade jumper harness, this fixed our problem. There are 3-4 different jumper harnnes , the one for the early CX's have yet to be delivered to the dealers.

For dump trucks and off-road the Mack rear-ends are the way to go. On road or over the road the Mack rear ends are way to heavy. I love the Mack rear-ends more than any other but when we spec out trucks and the customer see the weight difference the usually go with the Eatons or Rockwell/Meitors. And Mack wont let any HP bigger than 427 with the 93/93 carriers, if the customer wants bigger HP they must use 200 series Mack or vendor carriers/axles. The 200 series are even heavier and more $$$. I was doing a HP conversion on a 2003 CH613 355/380 HP going up to a 460HP and Mack didnt want to turn on the download because the truck had 92/93 carriers/axles. If the new Mack carriers are as light as the vendor carriers it will be a big hit. I hate doing the warranty on vendor carriers, Mack warranty is much easier to deal with.

I called Mack and they sent another file to put on the ECM and it also did nothing. So here we still sit. Dealer said they were going to contact the DSM and see what to do they are at a loss too.

Hopefully they will send it to somewhere with a dyno. Thats what our DSM said to do and he paid for all of it.

Every new truck we sell, we make sure it has the "Guard Dog" display on it. It dosent cost very much to add as an option when spec'ing a new truck. I think its $300-350 which is cheap when they truck cost $100,000. We had a guy want to add it to his CXP that he bought from another dealer and parts alone cost almost $1000 + labor to install. It's nice when a customer is out on the road and the EML (electronic malfunnction light) comes on he can call us and read out exactly what the fault is and we can get ready or order parts for possible repair while the truck is on the way in. What I like is the customer can see exact MPG instead of him trying to figure it out and being wrong then blameing the truck by forgetting to include all the gallons he burnt while idleing at the truck stop and ect.... kinds puts a stop to the complaning as we have never had a low MPG complaint yet with the "Guard Dog"

Just wondering.....on the new models with the Co-Pilot and Guard Dog display, can you set your own road speed limits, or does it have to be done with dealer equipment.

I know I can do my own with Cat and Cummins but not sure about Mack.

Around 2001 and up there was a Co-pilot like screen ( mostly on the CX Vision)on the RH side dash panel (I cant remember what it was called). With that system you could set your own road speed if it was set up correctly by the Dealer. We did have alot of issues with this type system. The screen would blow sometimes during jump-starting when low batteries. I dont know on the old Co-pilot (sat on top of the dash, VMAC II around 1996) and the new Guard Dog (MP engine trucks).

Welcome aboard!

Are you the fella who bought two Titans with SISU axles? Either way its a bloody shame your having so many problems. I wonder how Volvo is doing with the 2010 D16's in their VN's.

Any idea on where the coolant is going; oil, cylinders? What kind of transmission and clutch problems are you having? Give us all the details you got!

Just had an 09 CXU using lots of coolant, the harder you used it the more coolant went missing( up to more than a gallon a day). No external leaks at all. Finally found a cracked EGR cooler. This is the first we have seen of this problem on an MP8, hope its the last.

Mack dealer nearby has a 2004 Vision for sale...460hp, dual pipes, wet kit, 13sp...spec'd out to what I need and want.

I've seen various posts/topics on the post '03 trucks, but most have been bad (maybe I should take the hint?). I was just wondering the good, the bad and the ugly about the 2004's.

2001-2003 non-ASET are good, 2004 CH and CX with ASET no-no, ASET engines do get better in the CXN-CHN framed trucks starting in 05. I prefer the 2002-2003

I general getting parts is difficult at this time. I know the plants are short parts for production. A few weeks back we were short on fuel tanks, hoods, and wheels to name a few parts. It is taking longer to get parts from suppliers for production and service.

We finally got our EUP's in, they actually came in early. We are now waiting on MP8 turbos(recall) and MP7&8 front crank seals( have several leaking).

The AC supposed to be the highway engine and the AI the vocational engine. But due to the 2004 AC problems we had (till the "N" model large Volvo frames came out(CHN/CXN)) alot of guys ordered light weight CV's with AI's and air ride and put 5th wheels on them for gas hauling and local runs. This got around having to use the AC engine.

been hearing a little chirping noise past few days, sounds like maybe a exhaust gasket leak. Talk to my mechanic, says it may actually be turbo starting to go. Since I've been running before daylite and shut down after dark, couldn't really tell. Day off today, go look, exhaust manifold cracked in center section (3 piece).

Call dealer and get price and order manifold, gaskets,studs for turbo. "While your at it, whats the price on a turbo?" $2,400 WTF If they aint making money on selling new trucks, their making it on parts. Parts will be in Monday, looks like a fun job on Tuesday

End of rant for now Ed

That cheap compared to a 04 and up Ac ASET turbo $3,000+

Is the electronic E7's ETECH engines? What is the differecen between the CCRS, AI, and AC? I thought they just had the ASET from 03-07.

[/qu All CCRS, AC and AI are a form of the orignal ETECH engine 1998 and up. Around 2002 the CCRS etech started, looks just like the ETECH but has no fuel return line off the heads, different cam and EUP's and straight key way on the cam gear also most 460 hp had a simple wastgated turbo. The AC in 2004 was in the CH/CHN and CX/CXN had EGR cooler and big giant VGT turbo and new style water pump and alot of other changes as well. The AI started in 2003 I think and was kinda like the AC but with out EGR cooler and had a simple turbo and was in CT, CV, LE, MR trucks only. There is alot more differences that I have listed but I would be typing all night to inclide them all.

EUP is that the injectors or Electronic Unit Pump? I forgot Mack used Bosch injectors, am I correct on that?

Its the electronic unit pump. All ETECH style engines have 6 of them . They all look exactly the same but there are 3 different part#s due to the ETECH 98-2001, CCRS 2002-2003/AI 2003-2007 and the AC 2004-2007. You can actually mix them all up and put them in different engines and they will run but not good(low power). We went to our independant pump shop and they could rebuild our EUP's but cant get parts from Bosch.

Why is there such a backorder for? Shouldn't they have already had a bunch of parts stocked for the ETECH's and E7's already?

Mack says it's Bosch's fault, but that dosent matter to the customer as his truck is setting here with 2 bad EUP's.

Try an order a EUP for a 2002 CCRS etech or 2004 AI ETECH 1,500+ on backorder and no shipment till after newyears. We are robbing our junkyard engines to keep our customers going.

I've read on here on several occasions that parts are on back order, discontinued or suspended. Is Mack/Volvo making it hard to own anything with an ASET, E7, E6, E9, and etc.? If so I don't understand why in the hell they would do such a stupid thing....Oh wait I forgot they can't make money on used equipment.

Even the MP engine parts can be hard to get. A new recall just came out today on all early MP8 turbos. Found 5 of my customers needed the new turbo. Went to order parts and a big"0" on the turbos. Why issue a recall on turbos when you dont have any?

new to us 2004 mack vision with the 427 engine, issue is when you let off the throttle seems that the jake brake always come on a little, then when you get back into the throttle, it makes two belching kind of noises and then take back off, almost like it is missing out. Also does not have the power of or 98 427. Any help would be appricated

Also does it have a auto shift or ultrashift trans? If so the engine brake will engage to help the trans shift even if you got the brake turned off.

new to us 2004 mack vision with the 427 engine, issue is when you let off the throttle seems that the jake brake always come on a little, then when you get back into the throttle, it makes two belching kind of noises and then take back off, almost like it is missing out. Also does not have the power of or 98 427. Any help would be appricated

If the engine has the "powerleash" engine brake, the o-rings on the engine brake solinoids could be bad/cut and causing oil leaking into piston area and slightly applying brake. We have seen this before quite often. As far as the low power, read some of the posts on the 460 HP CV's and about going to the dealer to get both ECU's reflashed with the new software for poor throttle responce. Need last 6 of the vin and I can tell you if it need the new software.

Thats disgusting !Some one droped the ball on that one!

I think if it dosent have a "red" motor in it MACK/VOLVO dosen't care if you get parts or not.