ranchhopper Posted August 13, 2016 Share Posted August 13, 2016 I was put in a RD tractor at work this week its a computer controlled engine and a strange thing happens to it at 4:30 every day it starts to lope like its shutting down then catches itself it will do that rythemically every couple seconds. The truck starts and runs like a champ everyday until 4:30 PM doesn't matter what time you start it or how long you run it the lope starts everyday at the same time. The truck was driven by a driver who was a slob and spilled a 32 ounce drink on the dash drowning the computer and shorting it out so they bought a new computer and installed it and from day one this issue has started this truck sat in the yard for ten years with dead batteries and when starting it up after all that time it still had this problem mack couldn't tell the mechanic at the shop why it does this. Anyone ever hear of something like this the head mechanic is going to disconnect the computer and unhook the batteries for a couple hours hoping to set the time back a couple hours so it has a longer run time anyone ever hear of something like this? Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/ Share on other sites More sharing options...
41chevy Posted August 14, 2016 Share Posted August 14, 2016 What are you near at 4:30 when it does that? Power Towers, Radio dish or Cel tower? Paul Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342240 Share on other sites More sharing options...
ranchhopper Posted August 14, 2016 Author Share Posted August 14, 2016 Paul it happens in the yard but the first time was 20 miles away and years before it happened in our old yard. Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342244 Share on other sites More sharing options...
Dirtymilkman Posted August 14, 2016 Share Posted August 14, 2016 At 4:29, turn your clock back a couple hours 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342317 Share on other sites More sharing options...
fjh Posted August 14, 2016 Share Posted August 14, 2016 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342332 Share on other sites More sharing options...
grayhair Posted August 14, 2016 Share Posted August 14, 2016 (edited) Not sure I understand... Did it have the problem before the computer was replaced? From above, " so they bought a new computer and installed it and from day one this issue has started" Do you have another computer you could try, switch them out and see what happens. New doesn't necessarily mean "good." Would be nice to eliminate the computer as the source of the problem. Failing that, does it have any aftermarket add-on electronic items? Edited August 14, 2016 by grayhair Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342335 Share on other sites More sharing options...
Underdog Posted August 14, 2016 Share Posted August 14, 2016 The Volvo's at work are affected by the aftermarket GPS tracking connected to the OBD port. I have seen them trigger the check engine light and go into limp mode. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342339 Share on other sites More sharing options...
ranchhopper Posted August 14, 2016 Author Share Posted August 14, 2016 1 hour ago, grayhair said: Not sure I understand... Did it have the problem before the computer was replaced? From above, " so they bought a new computer and installed it and from day one this issue has started" Do you have another computer you could try, switch them out and see what happens. New doesn't necessarily mean "good." Would be nice to eliminate the computer as the source of the problem. Failing that, does it have any aftermarket add-on electronic items? Its not an aftermarket computer or anything else it started when they replaced it with a OE computer. Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342348 Share on other sites More sharing options...
grayhair Posted August 14, 2016 Share Posted August 14, 2016 (edited) OK, understood. What I am suggesting is that the new OE computer may be defective. I don't know how difficult and expensive to change out the computer but just because it is a new one doesn't necessarily mean it is a good one. Maybe it is defective. Wouldn't be the first time a new part from the dealer was no good. One other question... If you start the truck an hour earlier, do the problems show up an hour earlier, at 3:30 rather than 4:30? Edited August 14, 2016 by grayhair Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342369 Share on other sites More sharing options...
Dirtymilkman Posted August 15, 2016 Share Posted August 15, 2016 What about daylight savings time? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342423 Share on other sites More sharing options...
ranchhopper Posted August 15, 2016 Author Share Posted August 15, 2016 11 hours ago, grayhair said: OK, understood. What I am suggesting is that the new OE computer may be defective. I don't know how difficult and expensive to change out the computer but just because it is a new one doesn't necessarily mean it is a good one. Maybe it is defective. Wouldn't be the first time a new part from the dealer was no good. One other question... If you start the truck an hour earlier, do the problems show up an hour earlier, at 3:30 rather than 4:30? Doesn't matter when it is started 5 AM or 4 PM still happens at the same time. Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342459 Share on other sites More sharing options...
grayhair Posted August 15, 2016 Share Posted August 15, 2016 (edited) Sounds like Underdog may have it right. The only thing I can imagine is that your tractor is pulsed by a satellite signal every day at the same time. Say a fleet operator has software that is programmed to query their fleet once a day, every day, at the same time, to create a management report: Unit location, status, days operating data, etc. Your truck goes into limp mode while the data is being sent. Just guessing of course but seems possible. If your tractor was purchased used, maybe a tracking system was installed by a previous owner and they didn't remove it when they sold? Hope you get it figured out. Edited August 15, 2016 by grayhair 2 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342481 Share on other sites More sharing options...
Hobert62 Posted August 15, 2016 Share Posted August 15, 2016 Was it a teamster truck, and at 4:30 it's done for the day? 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342530 Share on other sites More sharing options...
Nobody454 Posted August 15, 2016 Share Posted August 15, 2016 who wants to work past 430 anyways? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342533 Share on other sites More sharing options...
Popular Post ranchhopper Posted August 16, 2016 Author Popular Post Share Posted August 16, 2016 3 hours ago, Hobert62 said: Was it a teamster truck, and at 4:30 it's done for the day? If it were a teamster truck we would have sold it because it would have been used to less work for more money they don't roll that way at our company. 4 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342549 Share on other sites More sharing options...
TeamsterGrrrl Posted August 16, 2016 Share Posted August 16, 2016 At 04:30 this Teamster is ready for a nap... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342563 Share on other sites More sharing options...
grayhair Posted August 21, 2016 Share Posted August 21, 2016 Or maybe the truck came from Indiana, or Ohio, etc. an Eastern Time Zone state where it would be 5:30? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-342954 Share on other sites More sharing options...
gearhead204 Posted August 22, 2016 Share Posted August 22, 2016 simply replace the engine with a pre electronic e7 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-343060 Share on other sites More sharing options...
IH Farms 2 Posted August 31, 2016 Share Posted August 31, 2016 Its telling you traffic will be getting bad and its quitting time. What is the fuel level? Maybe thats the time it gets low enough and there is a crack in the draw tube? Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-344182 Share on other sites More sharing options...
ranchhopper Posted September 1, 2016 Author Share Posted September 1, 2016 I would love to switch it over to a mechanical engine fuel is filled at noon most days so no problem there either. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-344188 Share on other sites More sharing options...
VallyOrent Posted October 13, 2016 Share Posted October 13, 2016 (edited) Hi..i am a new user here. As per my knowledge the new OE computer may be defective. I don't know how difficult and expensive to change out the computer but just because it is a new one doesn't necessarily mean it is a good one. Maybe it is defective. Wouldn't be the first time a new part from the dealer was no good. pcb assembly company Edited January 10, 2017 by VallyOrent Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-348623 Share on other sites More sharing options...
viya0414 Posted November 3, 2017 Share Posted November 3, 2017 I would love to switch it over to a mechanical engine fuel is filled at noon most days so no problem there either. PCBA Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-384230 Share on other sites More sharing options...
david wild Posted November 3, 2017 Share Posted November 3, 2017 You guys beating up on the union labor, that is uncalled for, they work very hard at getting out of any work and getting as much pay as possible, shame on you. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-384236 Share on other sites More sharing options...
mackey58 Posted November 4, 2017 Share Posted November 4, 2017 Whatever Quote Link to comment https://www.bigmacktrucks.com/topic/46439-strange-electrical-glitch-in-rd-tractor/#findComment-384289 Share on other sites More sharing options...
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