DT466E 2001

This topic contains 5 replies and was last updated by tim-ogden 8 years 6 months ago
Author
tim-ogden
March 4th, 2013 4:41pm
Post
I AM TRYING TO RESOLVE A RUNNING ISSUE. TRUCK HESITATES UNDER WAY, DASH GOES OUT AND CUCLES

TRUCK CONTINUES ON ITS WAY. TILL NEXT TIME. OCASIONALLY TRUCK WILL QUIT JUST LIKE TURNING OFF KEY. DRIVER WIL PULL TO SIDE OF ROAD AND RESTART WITHOUT HESITATION. ONCE TRUCK WOULD NOT RESTSRT IMMEDIATELY, ABOUT TWO HOURS LATER I STARTED IT AND DROVE WITHOUT INCEDENT ABOUT 25KM.

ANYONE ELSE HEAR OF A SOLENOIND ISSUE WITH ENGINE FAN??
electronexciter
March 5th, 2013 2:38am
I wonder if you might have a poor electrical connection that is causing your engine ECM to loose power. I would appoach this problem by backprobing the battery circuits at the ECM connector and monitoring the electrical power at the ECM while in the cab driving. You would have to figure out a way of running some long test jumper leads from your backprobe pins at the ECM connector, into the cab, where your multimeter could be monitored. I suggest taking a passenger along to monitor your multimeter so that the driver can concentrate on driving. Is there a main circuit breaker or main power relay that feeds battery power to both the dash and the engine ECM? This sounds like an electrical issue, but I would not assume that. Probably a good idea to install a fuel sight glass and fuel pressure guage and verify that there isn't a second fuel related problem that is causing the hesitation, although a faulty ECM power connection could cause hesitation I suppose. Inspect your engine harness. Maybe take your dash panels off and see if there is an obvious wiring issue in the dash.
brad-troyer
March 8th, 2013 7:31pm
I"ve had a similar problem on a 530E motor inna IH4900 dump truck. It only happened after a motor overhaul, so I'm guessing somewhere theres a pinched wire or bad ground. I lose my gauges, tach and speedometer after the truck warms up, but with a site work dump truck it'll turn itself back on for no apparent reason. I've never had the truck turn itself off for no reason tho.



I have had fan clutch operation troubles. Fan either runs all the time or doesn't run at all, even when the motor is running way hot. Shop that did the overhaul said my ECM was prolly the culprit but those aren't cheap. This is the same shop that didn't put the wiring harnesses back in their proper holders and rerun the flexible black plastic covering on the harnesses. There is an aftermarket thermostat available that you stick a probe in the radiator (externally) and hook to the air solenoid that seems to work. With the rough conditions on a dump truck doin site work the shop woulnd't stand behind the parts so I've stopped doing business with them completely.



I"ve not pulled and tugged on wires and harnesses, but I"m guessing its either wires, ground or ECM in that order.
will-tilley
March 16th, 2013 12:10am
Tim we have a DT530E in a dump truck as well and I have had a problem with the truck shutting off when in use and immediatly starting up again.Make sure that the ecm wires in the battery box are connected on the battery the farthest from the battery with the starter cables.The battery draw will sometimes give problems with the ecm if they are connected on the same battery,which causes starting trouble.Check the solenoid on the high pressure pump and make sure that the nut is holding it on,because I had one with the nut gone and the truck would shut off and restart.The solenoid would slide off the cartridge and the truck would shut down,the shaking of the truck trying to start would shiver the solenoid back on and it would start and run.That was a hard one to find.Sometimes I think I could write a book on those IHC engines.
heywood
April 6th, 2013 1:54am
One area I would look is the connection at the IPR, I have found this multiple times at work.
rachel-stroup
May 18th, 2013 10:40am
I doubt you have an actual relay problem but rather your engine may have 'froze' and cycling the key off and then back to just reset it. Also recheck 4 things always with the start up, The battery, loose wire, starter or alternator.

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