MF 1742 Cranks but wont start

[NAVYMC]

OK gents, I have to do this, been reading through the posts and do not have the time to read a bazillion threads. SO, Going to my lower pasture Sunday, hit a ground hog hole, triggered the seat switch, engine stopped. USUALLY, it fires right back up with a momentary overheat warning but then quickly goes back to normal. This time, it will not start. It turns over but will not fire off. 3/4 tank, full service 20 hours ago, I was not using PTO or any other part that would safety switch this thing dead. I cycled everything just to make sure. Visually inspected under the chassis, all the normal stuff. It is throwing a 2042 2 code, which is the pressure limiting valve(DBV) open (rotational speed over) First question, what the HECK does that mean? I do not understand the rotational speed over. Any help there would be great. Where is that VALVE!!!! LOUD NOISES!!!! THROWING WRENCHES!!!!! Ok, not really, just the little dude in my head.

Second, the dealer is telling me I have to bring it in to reset that code. THEN I found an old timer that says he has seen this before and to take the positive and negative off the battery, ground them together for 15-20 seconds and the fault will clear. Hook the terminals back up and voila. Well, that didn't work either which tells me IF that really works, then there is a component that has failed. ANY, like ANNNNNNNY thoughts would be appreciated.

I think it is funny the dealer is asking me to bring the machine in when it is clearly understood that my girl will not start and I do not have something to get it on the trailer with. UHG!!!!!!! I miss the old stuff! And yes, the little dude in my head started throwing things when the dealer requested I bring it in!

CHEERS!

 

[Dmacleo]

don't suppose that hole bounced/loosened connections on rpm sensor? or whatever they call it. seems to me (no personal experience) like ecm is thinking its over revving and not delivering fuel.
seen similar stuff on automotive cam or crank sensors.

 

[WinterDeere]

Dealer doesn't have a service truck? How do they deal with the big boys?

I suspect the tool required to reset the code is probably no larger or heavier than a 1990's cell phone. Seems like it'd be easier to move that to the 5000 lb. tractor, than the other way around.

 

[bearthebruce]

I too have no direct experience on a tractor with this but have answered many VW owners with similar issues.. If that crank sensor is not indicating rpm to the ECM, the ECM will not call for fuel.

I don't think the code will stop a restart. But no crank signal? The controller has no idea who is on first and how to get to get to second!

So I agree with @Dmacleo - look for a loose wire on the crank sensor.

 

[thclimer]

I think it has something to do with the fuel pressure sensor, I'd be looking for some loose wires around your fuel lines:

 

[Harry in Ky]

I'd be looking for a tractor that doesn't need all that crap.

 

[NAVYMC]

BAHHHHHHHH! Harry is correct. I just stopped by the local dealer, and they just started the Massey gig so not at all experienced. Went out and looked at the new toys and NONE OF THEM look to be as complicated as my girl!!!!! FINALLY, I had some time to tinker this afternoon. SO, the fuel is getting to the Bosch pump for sure. Oh, it is Bosch 0 445 020 506 PN, but on the diagram for that silly thing is a component they call a "measuring unit", beyond me why they call it that, maybe that is common, BUT, I believe that is the little pump that primes the rail. It is making a strange noise when you turn the key on, as in a much different noise than before the stall/trouble. SO, I am going in search of that little rascal and keep you posted.

I REALLY appreciate the feedback here. Not much help, but man I do not feel alone with some gear heads and experience talking to me, it is like therapy. Like TRACTOR therapy! @thclimer, GREAT info brother, that is what this kid showed me at the dealer. I asked him what the MPROP was and he had no clue. I would trash-talk him right now but I do not know what that means either!!! BUT, I think the code is tossed because the fuel rail PSI sensor is not getting ANY pressure. When I take that sensor off the rail and turn the ignition on, there is not fuel getting to the rail.

I think I have this, and will certainly let you all know. I would like to know where the low pressure pump is if someone knows, but I am pretty darn sure that thing is what those Germans call "measuring unit", and my little pea brain AMERICAN version its called a FREAKING INJECTION PUMP!!!!!!!! AND MF Calls it that also!!!!!! Sorry, the little guy in my head has had coffee and a Kickstart and likes to throw wrenches and yell!!! LOVES LOUD noises, damndest thing!!!!

OK, I will get back to you fine gentleman to let you know!!!!

 

[NAVYMC]

Not it... Sadness...

 

[Harry in Ky]

You see, this sort of thing is what drives me crazy about the state of tractor engineering today. Unsuspecting individuals go looking for a tractor. The common prevailing thought is "new is always better". Buy something new and you're trouble free for a long time. Maybe so at one time, but not any more.

When the industry gave up common sense fuel systems in favor of common rail they took 'trouble free" right out of the equation. Take any older tractor without electronics. Sure, problems do come up. The difference is this. When they do, if you can make an accurate list of the symptoms then without fail SOMEONE can tell you what's wrong with it. With electronic systems it's a whole different matter. Sure, when they work they're slick, but when they act up they either won't run or they won't move. And all too often NO ONE can tell you why, because the list of possibles is endless. So is the price tag on some of the various components one can replace hoping to get past any current problem.

A list of such issues should be required by law at the top of any sales brochure.

 

[NAVYMC]

Totally agree Harry. HIGHLY frustrating dealing with this when I live in the middle of nothing and takes a bit to get to the dealer. I have one close, but they are not tractor people. I was looking at the newest renditions of a 60-70 horse class Massey today when I was there. MUCH better design for accesability of the components. The engineers that designed this little one have obviously never touched a bail of hay, ran out of gas, or broke down in the middle of nowhere, changed a sikle blade, got the timing off on a square bailer - The list can go on forever. The one dealer where I trust the old guy in the service department told me their business charges $150 per hour, port to port for the labor. It is UNBLEIVABLE. Thinking about getting my neighbor to come help me push this on my trailer, drag it to a dealer that has and OLD MF and tell them pinks slips... LOL!!! I will figure this thing out, but that does not make it any less frustrating or prevent the little guy in my head from throwing wrenches and yelling...

Talk to you later bud...

 

[Harry in Ky]

It's not just smaller tractors, the larger ones are in the same boat. It's not the size that matters, it's the overall concept. Too many signals, too many switches/sensors, far too much wiring, an over rated, over priced computer, and no answers for anything. It happens many times every day, no matter what color machine.

 

[thclimer]

Sorry, I'm no help for identify where the priming pump is. Maybe someone could turn the key with you by the engine and try to listen for where the noise is coming from?

 

[DarkBlack]

Here’s a similar issue:

Error code 2042 and won't start

Hi all, I've got a 2015 1736 that's been a little bit of a pain with engine codes. My dealer has been great but now I've got a new one and my tractor is sitting in a creek bed and won't start. The code 2042 comes on whenever I turn the key to on, but without trying to start it. When I turn...

www.tractorbynet.com

 

[NAVYMC]

Harry, you crack me up. I understand what you are saying but dang it is all I can do just not to say -

"THAT'S WHAT SHE SAID!!!!!!" I agree, it is not the size that matters, its the concept! LOLOLOLOL!!!!


I intend to put maximum effort into this thing today. The weather is favorable, I have all day, and by the end of the day it will either be on a trailer or running. Maybe both. @thclimer, no worries, I have half-a** tried and today, not half-a** trying. It is my strategy to find that pump just for troubleshooting. I did take the flow/psi sensor off the fuel rail, turned the key on, no fuel. Also, used the priming pump there and no fuel.

I took the Bosch "measuring unit" off also, turned the key, no fuel but I was able to get the fuel when actuating the manual priming pump. SO, I believe at this point, a couple of things. I think that there is NO issue with the pick-up out of the tank. I inspected the filters and they are as clean as can be and no evidence of contamination so it rules out the fuel cell and filters. I also believe that because I can manually prime up to the "measuring unit" that there is no component preventing fuel to the main injector pump, like a cutoff valve. However, beyond that, I need to get to the priming pump and identify it that is a failed component OR it is being prevented from running because of the myriad of switches that Harry and I both know are present on these machines.

THe highlighted in the pic is the flow/PSU Sensor on the manifold. You can see the main injecotr pump in the lower right. Sits on a gearbox where you service the oil. The best part about this pic is how it demonstrates how engineers that designed this cearly have never worked on anything beyond a pencil sharpner!

 

[DarkBlack]

I just realized that’s a Mitsubishi engine. I didn’t realize AGCO stuck Mitzi’s in some tractor models

 

[NAVYMC]

Update, I am writing this because this will help someone else. So, my little MF 1742 replicates the same codes that Mitsubishi builds in their ECU. Duh, right? Well, I am saying this because AGCO does not make it very clear and instead of banging your head against the wall trying to figure out the meaning of what is vaguely written in the AGCO manuals, here it is.

Here is the issue... AND if ANYONE knows, please chime in. It says DBV is the pressure limiting valve and I cannot find that term in any of the literature. I THINK that is the same as the "Measuring Unit" on the injector pump itself. Second and last for now, I truly think the ECU needs a computer to reset this thing BECAUSE of what is reflected above. Thoughts if you could please. This helps me THINK. I grew up as a Flight Engineer for 25 years but when we had engine issues we had literature that would tell us EVERYTHING we needed to use critical thinking to solve problems.

 

[NAVYMC]

Thoughts on this fellas. Do you feel the pressure limiting valve is the same as the measuring unit called out below? I cannot find a pressure limiting valve anywhere in the literature.

 

[NAVYMC]

Here’s a similar issue:

Error code 2042 and won't start

Hi all, I've got a 2015 1736 that's been a little bit of a pain with engine codes. My dealer has been great but now I've got a new one and my tractor is sitting in a creek bed and won't start. The code 2042 comes on whenever I turn the key to on, but without trying to start it. When I turn...

www.tractorbynet.com

I saw this also but I am not wanting to pay a tech $150/hour, port to port, just to hook a cell phone up to it to reset. I have ordered a diagnostic reader that I SHOULD be able to reset myself. JUST the travel to and from my farm will cost me roughly $450 and that I am not going to do. I appreciate that feed though because there is come value there. CHEERS DARKBLACK!!!!

 

[NAVYMC]

Last Post here about the issue of helping prevent someone else from a headache and just get to the solution.

Indeed this is an issue with the 1700 series tractors. Unless you are in the state of Colorado, plan on taking it to the dealer to get the ECU cleared of the fault. Within 10 minutes of getting my machine to the dealer, the fault was cleared and the machine was running as normal. ALSO, AGCO recommends in the secret squirrel website of theirs to recommend to the customer that a time delay should be install for the seat kill switch. SO, for me, I will never bypass that switch because of the nature of my farm and you just never know on hills. Certainly do not want the machine to keep running in the event of a roll over.

I even bought a diagnostic tool that had the ability to reset faults and it would not reset this. I am not sure how they have the ECU programmed but it sure seems like a class action cases much like Deere had. Literally 10 minutes to get the machine running and had to take it to them. I mentioned Colorado because they will loan the equipment out. All other states, the way it was explained to me is possible but the customer will have to pay for the license fee of the software for the month, which I was told is $3,000. THEN to take the computer system from the dealer, they charge you the cost of that equipment until returned. I was told that cost was near $10K. SO, that is the deal and the end of my story.

I paid a roll back to come get the machine and cost me $100 to get the machine to the nearest dealer. Seat switch time delay relay was $280, and another $100 to get back to the farm and done. $480 for something that AGCO Engineering should have made standard out of the factory!

CHEERS!

 

[Yander]

Glad you got it fixed and thanks for posting back with the fix, we have a MF 1750M but hope I never need to haul it to the dealer.