Mackpro

Hopefully its just the sending unit. Sometimes times its the wiring but not often. The wires go from the sending unit in the tank to the cab ECM. If something is wrong with the dash guage or dash cluster it wont set a code so its probably just the sending unit.

Fuel tank sending unit is a 6-1 code.

Somebody got their ride "PIMPED"!

That VIN doesn't show up for any Mack ever built. On ever CV I have ever seen the last 6 of the vin starts with a 0. Does the dash have a manifold pressure ( turbo boost)guage in the upper left hand side of the dash? If so what does it read under a load? Spec is 28 to 36 psi. My friend has a CV713 with a 427, 4.42 gears, 11r24.5 tires and an 8LL trans and it runs great. With your gear ratio it should be good. Recheck the vin and see if its correct.

Out of our 3 stores we have only sold 1 and I never got to see it. We only sold 2 new trucks all of last year. We are having a much better year this year but no Titans planned to order.

Whats the last 6 of the VIN #, I can see if the Step 12B update has been done in the ECM. Like the post above, need more info, tire size would help.

When the Freedoms were first coming out I ordered 3 different service manuals for them. We never sold one , saw one or had one on the lot. The manuals I have are for the wiring, engine overhaul and AC/heating system. I looked for any fault code info but found none in the manuals I have.

Just have your Mack dealer pull up a CXN613 that has a Horton fan drive/clutch and order what you need. You will need the fan clutch/hub, fan blade and air solinoid. The dealer will have to change the fan setting in the engine ecm to on/off. Also your fan belts will probably have to be replaced with longer or shorter ones. We have done a few but most people stick with the Behr even though they last only about 3 years max. Good thing about the behr is they dont come off and go through your radiator like the hortons do!

Heres some pics, pulled a new one off the shelf, Let me know if you need the other side (engine harness wire #'s).

I was thinking EGR valve sticking open or most likley VGT/ turbo actuator. Really need to get a fault code out of it. Both of these parts are $1000 each so I wouldn't want to start throwing parts at it. Till you know for sure.

I'm sure you can on the 92 series cause we have changed the upper pinion and ring gear/bevel gear with the carrier still in the truck/housing. I thought you could on the 93 as well. I know on the 200 series you have to pull the whole carrier out. All my books are at work though, to double check.

We have a winner!

Had a new CXU stop in and it had the first M-drive transmission that we had seen. Driver said it was super smooth shifting and really liked it. We got 2 techs at M-drive Mack school this week. Hope these transmissions are trouble free! Sorry pics are sideways!

Mack had a service bulletin about Biodiesel, I think they only recomend 10 or 15% max, I'll try to find it and post it. Some guys in our area with new DPF equipped trucks used the 20+% biodiesel and it caused lots of regen problems. If it was a farm truck or a truck that wasnt used much I would not put any bio-diesel in it at all. I would only use it if I knew I was gonna run it all out before it sit to long.

When you turn the key on, does the red X shutdown light and the yellow "lightening bolt" light come on for 2 seconds then go out? If not the engine ECM might not be powering up. If the J-1939 line and the other datalink (cant remember the #, J-1758 ?) wire are unplugged it wont start. Some where I have a "crank but no start" troubleshooting check list.

Whats the last 6 of the VIN and model number (GU713- CXU613...ect) I can pull it up and see what AC set-up you got.

You can have your Mack dealer bump your 350 to a 400 with just a download/HP conversion. The only hard parts to install would be the larger vibration damper if needed. We do lots of the 350 to 400 conversions. The cost of the download used to be free but here latley Mack (Volvo) has been charging the dealer $300-500 plus Dealer labor time and vibration damper if needed. To get to the 427-460HP range you need turbo and injector change plus pull the cam and install off set key-way to retard the timing to prevent overheating ( must been done in the RD due to small radiator, we have tried before without key-way change, big mistake) I was thinking the last ones we did totalled a little under $6000 all parts and labor. You could get some larger aftermarket injectors to bump it up alittle. www.rochesterfuel.com used to list some stage 2 and 3 injectors for ETECH's but I see they are gone from their website.

I dont trust thoes restriction guages at all. At least change it once ayear minimum. And as some of the other guys said , try to vacume out the housing after you remove the filter if you can, I have seen pics of "sandblasted" turbo impellers from my turbo guy.

2004 was the date written on the filter, thats when we sold them the truck.

Had this farm truck (2000 CX) come in yesterday for a service. Pulled the air filter out and it was the worst I have ever seen, It weighed 17 pounds, packed full of bean hulls I think!

Yes, Check the small fuse box (if this is an ETECH engine)under the hood on the firewall, look at fuse # 41 i think. This sends 12V to the fan circuit. I had a truck the other day having high AC pressure due to when defroster is turned on the AC compressor was engaged but the expansion valve was stuck closed causing high pressure. Even after the engine was shutoff for several hours it still had high head pressure.

The engine ECM tell it to come on, it actually grounds the circuit inside of the ECM to engage the fan. The ECM looks at coolant temp, AC high pressure and intake manifold temp to know when to engage.

Called one of our customers today to ask how a couple of his CHU MP8's was doing afer having several breakdowns here latley, he responded that the CHU were doing ok but he did go out and buy a new KW! We have lost alot of new truck sales to KW in the last few years but they will be back after they see its not as green on the other side of the fence like they think.

We have yet to see any new LEU's in our area in several years, all the major trash companys in our area have switched to a Pete (or some other low-entry model) however lots of new 2011 MRU's showing up.