Eviltwisted1

@Brooks man that's awesome new. I checked all the pin on firewall but I disnt see anything wrong there by eye.sight. I didn't try probing anything( as I had and have No clue on what to even peobe or what I would be looking for there!! Thank God! I got another job started today so I'm on that for next few days, but I hope by monday I'll be able.to work on truck again. 1st thing is I'll do test moparman advised then I'll so the Mods. I'm curious to see.what I find when I dig.in a little farther into this thing. Ya know what alao. I have Not tried.it in neutral or drive since I have tested and rest apps and all that . So maybe just maybe that might be a hope.for me! I'll make sure.i do test.1st and check it and mods and if not better I'll try neutral ( maybe it's the neutral safety switch or something. Is there way to clear.ths codes without a code reader?? I took my cheap $60.00 1 back after I got mad it didnt do live data or better than what it was. Or am I better just to bite bullet and buy decent reader that will do live data?? Is this worth.while investment? Thanks again Ps what name do I need.to look for on fb I didnt see fei2nd request or anything I'll look and see.of its somewhere hiding.

Yes @dripley iHave 3 codes I total P1689 P1698 P1693. That's why I'm asking about.the mods.also on order of which to start tackling these.codes. I think the 1689 is main culprit and I think that's preventing most of my issues. And then other.are.side.effects But not sure, that's why I asked @Mopar1973Man in last.post. But still not sure about anything when it comes to diesel so far lol

Yes sir reset all that when I was.doing testing for the apps it was high, it checked out good & and rest it When you say BUS problem? Forgive me but what does that mean exactly? So do I have 3 different problems? Or is it 1.of these effects something else and that will throw the other codes. I'm guessing the 1689 code is what is causing it not to rev up like it should? And therefore not come alive.per say( turbo kicking in and all that? Is this correct so far? Then the 1698 is something entirely different I need to figure that out in addition to 1689 code? And then I have a p1693 code flt in com module. So 3 codes.in total. Are.they 3.seperate issues.that need.to be diagnosed differently and all are Affecting different things in system? Or is it 1 or 2 need to be figured out and other straighten out? Not sure if.im saying that correctly I hope so.

Yes definitely is a.percise market, o ly advantage is , I'm in nice warm sunny southwest fl, and all these people with more $ than sence have to have their stuff like they want it( which is good for me) , I've gotten slower last cple weeks, but FL, fixing to open up pretty quick Governor here is awesome guy and cares about normal people not just deathly. Which helps. Not only that but all theae.good ole boys down here wouldnt put up with stuff like Michigan state governor trying to do( bit no politics here for sure!) Now.to Mr @Mopar1973Man Thank you so very much for what you do for all thses guys in world who needs help. It's nice to feel community so quickly jump in to help unlike most site! So thank you for that 1st and foremost, 2ndly, thank you for helping me. I really think I can get this fixed, and I knew there was someone, community, forum that could help and you have done that and more. This is what I think I needed to track it down!. I will do the WT Mod & the other Alternator Mod i saw in same post i was tagged in. @dripley thank you also sir! You been right there since i got on here to jump in and help. Now i feel i have to get it done & figured out ( with yalls help of course!) I will get these done asap( especially since not have work now) i will so the test above, see where that takes me. Then I'll post results, then do mods I guess? What order.would yall try? Reason asking is, that way I Know what the fix was,assuming I can get it right. If I do test repair replace, and mods all same time and it does work I won't know which was culprit. Or should I do mods, get that out of equation then go to test?. What yall think. Wither way I'll get them all done. Was trying to see priority order. Thanks again guys for all the help. I'll work on which ever yall think 1st tomorrow and see how far I get

Would this WT Mod fix my issues I'm having? Or atleast any chance.of it? Still cant figure.out why I cant get this figured.out still Everything that has been suggested so far i have done with no change.this far. I'm trying to decide if it worth time and a chance that this Mod could fix mine ( i realize it will help in future with issues) or is it impossible to tell if this will fix it or not? Still have same codes 1689, 1698 1693 and still only idle or 1500rpms that's it . So I'm trying to figure.out what is best use of time without wasting $$ I Do Not have( any extra.i would have or could get ( planning in the $200 for mechanic) unless I can figure this out with help of all yall. @Mopar1973Man Thank you so very much for the help and time for not only.me.but all of us with issues. Is there anything else that you could suggest i.do or where to look? I cant get a.fuel pressure gauge to test output of vp( dont even know if that's possible to test on high side of vp . Bit from what I'm gathering that is 1.of issues is without high pressure fuel being pushed it will Never run up passed 1500rpms) this sound right? Or no? My crash course in diesel has consisted of about a month of cramming everything I've read and nothing has helped yet Thank you again Guys

@Brooks and @dripley I appreciate all the responses & trying to help me. @Brooks I've had this nickname.for 30+years now if not longer. They definitely a reason Im Called The Evil( I dont ever forget being done wrong( or right) Twisted part comes from few reasons( I'll let yall guess that part). Lol Anyways what test are you working on where your testing black wire on VP and 5ohms and all that?? I trying to see if I did that test or not I dont remember. And trust me @Brooks I am in same place. I dont have the $200 to take to my mechanic, but if I dont hurry and get this up and running Santander is gonna come pick my New Main truck up for being past due. Was.juxt 2 months behind but with virus. Hwll I'm like 5 now, cuz lack of work( I make Concrete Beautiful overlays , patterns designs) needleas.to say I havent had.many calls for work during all this. . Alao I dont k ow if this is allowed but if you search facebook for Decorative Coatings LLC in ft myers lee county fl( pm me and I'll send yall my cell #) same goes for you too @dripley. If yall ever down Southwest FL yall have someone down here to help if yall ever need it. Or just hang out and have drinks!. @Brookslet me know what test that is and if you could upload the whole test & I'm try it also Dripley is this WT mod worth trying on mine? Or is it just something that I need to do just in general with No chance.in hell of it fixing mine or is there slight chance this could straiten mine out and make it run passed 1500rpms and actually throttle up like real diesel supposed to be

This sounds almost exactly as.mine is acting. Except mine will Only idle.og when you give it throttle it will instantly got to 1500rpms. No more no less I have nothing in between rpms. And of course it doesn't come alive.or do anything except sound like diesel but that's it. Lol Dis this mod make anychanges.as.far as.getting passed the 2000rpms? Do you have any rpms in between idle and 2k? Or does yours go straight to 2k with out being able to Keep it Anywhere but 2krpms? Like can you make it hold @ 1200rpms, or 1500? I'm dealing same thing so I'm curious if.you have figures.yours out yet? I am about.out.of choices but.to take mine somewhere, trying to follow.5 threads here 3 on other places, and still no closer to getting it to go down street like normal diesel does. Really.piaaing me off I cant figure it out. Much less with all the these guys been trying to Help Alot. And nothing making difference on mine yet. Learned alot. But I dont know where to go from here

I tried relay swap , that didnt change a thing. What does the WT Mod do exactly? .meaning why is it important to do?

What does this Mod do exactly? Moparman suggested I try this next with issues I'm having. No throttle above 1500 rpms. Are my.codes I'm getting P1689 P1698 P1693 My original post is under I have dreaded p1689 code. So what does this mod do? Fix? Or correct? And how or why do we do this for? Still learning so very curious. Thank you Eviltwisted1

What is this exactly and how.do I perform this? And then what does it prove 1 way or other?

What is the W-T ground wire model for vp44?? What exactly is that and how.do you perform test?. I will swap relays around but pretty sure I already tried that. But I'll let yall know tonight Thank All of yall for trying to help me

Yes sir wach every time!! Everything I can see /find /diag myself so far with help of yall who trying, recalibrated apps, rest it to ECM as.directed from help. Get in turn key on. All lights come on.as they should. WTS always comes on!, it fires right up when ya hit key that far. .motor perrrs at idle but soon as you go to give.it Any throttle. It immediately jumps to the 1500 rpm mark, wether.i give it tiny bit or wide.open, under load or in park doesn't matter. But for life.of me I cant figure out what is causing it this. Every other thread I see or read. Their trucks are driving / ,drivable, poof it fixed itself!, everythi g under.the Sun, But..... what mine is actually doing, I mean I could get in it put in in drive and it will do same thing 1500rpms and no more no less, speed.well might keep going up ( needs brakes ,not going over 20mph yet) But it would matter. This why I'm so confused and having such hard time finding anything near what sounds like what mine is doing in Any thread Anywhere I've found. ( which scare me cuz shop can say oh I need to dig.in deeper and spend alot of un needed hours when it's a stupid part , I just need to know what it is and I'll replace.it no problem there. It's not knowing what to do next or what to buy ( not waste $). So really need some help , advise. ,someone in southwest Florida that ain't gonna take everything I own including right leg . I really appreciate it. I can do al.oat any test( got big Giant mechanics diag, dissassmble, reassemble book that will tell me hell how.to rebuild anything on truck but it doesn't do me dam bit of good, u less.i know what test on what where for what. Thanks again Eviltwisted1 Dripley

I have checked all the fuel pressure. I have checked all wiring ( no cracks splits broken). APPS sensor has been tested recalibrated & set.to ecm . Non of this has worked or helped Anyone to be able to Help Me!? So I really need help. Stock motor 89 5.924v Code P1689 still learning Deisels myself . Checked as much is as I can. But basically its No Communication between ECM &Injectio Pump Module So what part is it that is Bad? Is it the ECM or something else. I'm desperately trying to get this figured out. Unlike all other guys that have this issue. Mine doesnt spit sputter, burp pop. Nothing. I cant even drive it. As.i only get idle or Any throttle At ALL it instantly jumps to 1500rpms. Nothing between after tou give it any throttle at all no turbo trying to kick in, . Motor sounds & idles perfectly. Like it should run fantastic, but I cant for life of me figure it out or find the answer for sure . And I dang sure cant afford dealership like most of us on a budget. Any help I'd appreciate for sure. Or if anyone knows of good shop near ft myers.fl who wont rape.me. please.let me know

ok I have done A lot testing and checking different things. To catch y'all up. I finally got truck running again. I had air in lines and has to bleed all way to injectors. Fuel pressure is 10lbs of pressure idle or on throttle. So this is Not a Fuel issues. It is either in COM or somewhere else. I checked APPS and it at idle was reading .729 or close to it. I recalibrated no throttle .512 or close video shows #s. So now APPS is set at the .5_Mark it needs. I have checked all wires coming off the APPS for volt readings to check that. There is a slight hiccup/fault/hesitation I point out in video. Also after I reset APPS I also tried to clear codes. It says it cleared on my cheap reader I have. P1689 showed right back up instantly or it never cleared it. either way I still don't know what is wrong and why I only have idle and 1500rpms. No one seems to be able to say it's this part and you need to replace it or it is that part. Any help I definitely appreciate. And I thank those who are trying to help I have not checked these readings with the truck running, but I don't see where it will make a difference. Either I have idle or what ever it means stopping at 1500rpms. Of course turbo doesn't engage or even try to sound like it has 1 . So to recap, I got truck running and all air out of the lines now and she starts every time now. Now problems is same as it has been. The P1689 Code No Comma between ecm and injection pump module. . I have recalibrated the APPS and did reset with pedal and APPS reads the .5 it needs . I tried clearing codes also but not sure if my RepairSolutions2 is actually deleting the codes or not. I don't have way to tell that. But soon as I do scan codes comes back immediately Is there another way to Clear codes besides using scan tool? To able check if I am getting them cleared for sure or not.. It was late by time I got some with all testing to have it running and do test for APPS while running . So I will test that today with motor running But as of now . All test I have done and nothing seems out of whack except the APPS was off at.no throttle @.729 instead of the .5 I test it to. When I started it last night nothing changed!!! Still have only Idle and 1500rpm at any throttle above idle. Nothing in between... Soon as I do test while motor running I'll post again. I really really have to get this figured out. I'm now e months behind on truck pay!what of main truck and they fixing to come reporting it I'm afraid. And I can sure don't have cash to pay local mechanic just to say it's this or that @ $200.00 Thank you for help this far

I'll try and clear things up a little I was doing a test from on this forums trying to figure out p1689 code. There was supposed to be white wite on #2 terminal on back of vp44 connector. And #13 in 51pin on ECM Hold that thought. In checking fuel system I changes filter. I Have Bles it All air is out of lines! From what I think ive.learned is that the transfer pump in the tank is bad ( only has 10lbs of pressure with pump on , when cranking engine over it drops to around 5lbs( which is something else that everyone is saying g if lift pump bad it will be hell to get it started again. So really trying to figure out Error Code P1689 . Now I did pressure test. Does any of this sound correct? Right?. Am i barking at wrong part? That's why asking for help. I have no clue. And hate giving $$.away just to be told it's this part or that and it will be this much to fix it on top free $200.00 already paying( or lack of) So any help would be great

Can anyone help? Is there anyone near ft Myers florida that knows what is reason for all this trouble?

Please help I'm at witts end. I just got 3/98 24valve and I'm trying to find out why it starts it right up, idles great and when you give it throttle in park for drive don't matter Motor doesn't go above 1500rpms . Got a code reader and it came up with what seems to be Dreaded P1689 code Which far as.I can find is something NO ONE agrees on of the cause!! I found this site from another diesel guy and I link I was given was here for 24valve 50\51 engine/obdii-error-codes94/P1689no-communication-between-ecm-and-vp44-r35/ I went through link and was able to get all way to #5 test which is checking ohms between #2terminal on FORM which is Supposed to be a "White Wire" and #13 on the ECM harness connector. Well I don't have a White Wire anywhere in the rpms harnes. So I can't go beyond this test At my shirts end and really don't want to have to pay mechanic $200 just to tell me what's wrong then whatever it will be on top of that. Really need help Also in reading and watching, remember something about it after fuel filter change that whatever is wrong will make it super hard to start. Getting fuel bled and fired up again. Now after changing fuel filter now seems that I'm having that issues also.( Battery started to run down so couldn't crank a lot to get fuel back up. After full day doors.open key switch on off alot . Had to stop and charge up battery. I might get it started but still don't know why it not acting like the Raped Ape a 2nd Gem is Supposed to Be!! Help please Only has 113845 miles on it . Transfer pump relocated to in fuel tank. Not sure what other help I can give at.moment. I need help though Like most of us I ain't got a lot in life good wife great.daughter, he'll of a dog and not much $ especially just to have someone say it's this part that be $200 oh and if you want me to fix it, it will be X amount times 3 more plus cost of part Y'all know the deal? Thanks in advance for Any help