THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
1-141-14
PPrroobblleem m CCaauusse e CCoorrrreeccttiioonn
10.10. CoolCoolant temperant tempera-a-
ture above normalture above normal
(sudden overheat)(sudden overheat)
(Continued)(Continued)
8. 8. DefDefectiective wve water ater pumppump..
9. 9. DefeDefectictive tve thermhermostaostat.t.
8. 8. ReplReplace ace watwater er pumppump..
9. 9. ReplReplace ace therthermosmostat.tat.
10.10. Contact a CumContact a Cummins Authormins Authorizedized
Repair Facility.Repair Facility.
11. Coolant tempera-11. Coolant tempera-
ture below normalture below normal
1. 1. ElecElectrontronic fauic fault codlt codes are actes are activeive..
2.2. CoolCoolant temperant temperature sensor mal-ature sensor mal-
function.function.
3.3. EnginEngine operatine operating at low ambientg at low ambient
temperature.temperature.
4. 4. TTemperaturemperature gauge e gauge malfunctmalfunction.ion.
5. 5. ThermosThermostat is tat is incorrincorrect or ect or malfunc-malfunc-
tioning.tioning.
1. 1. ReRefer fer to to thetheQSM11 Fault CodeQSM11 Fault Code
InformationInformationchart in this section.chart in this section.
2.2. Check / clean Check / clean sensor ansensor and cool-d cool-
ant passage.ant passage.
3.3.
4. 4. TTest thest the gauge and re gauge and replaceplace if nece if nec--
essary.essary.
5. 5. ChecCheck therk thermosmostat and rtat and replaeplace ifce if
necessary.necessary.
6. 6. ContContact a Cuact a Cummmmins Auins Authorthorizeizedd
Repair Facility.Repair Facility.
12.12. EngiEngine accelerne accelera-a-
tion or response istion or response is
poorpoor
1. 1. ElecElectrontronic faulic fault codes art codes are actie active.ve.
2.2. EnginEngine operatine operating at low ambientg at low ambient
temperature.temperature.
3. 3. Air iAir intakntake syste system or exem or exhaust shaust sys-ys-
tem leaks.tem leaks.
4. 4. Fuel Fuel gradgrade is noe is not cort correcrect or fut or fuelel
quality is poor.quality is poor.
1. 1. ReRefer fer to to thetheQSM11 Fault CodeQSM11 Fault Code
InformationInformationchart in this section.chart in this section.
2.2.
3. 3. ChecCheck for k for loosloose or dame or damaged piaged pipingping
connections, and missing pipeconnections, and missing pipe
plugs. plugs. Check tCheck the turbocharhe turbocharger andger and
exhaust manifold mounting (Referexhaust manifold mounting (Refer
to the Cummins Engineto the Cummins Engine
OperationOperation
and Maintenance Manual.and Maintenance Manual.
4. 4. OperOperate the eate the engine fngine from a trom a tank ofank of
high-quality fuel (refer to thehigh-quality fuel (refer to theFuelFuel
and Lubricant Specificationsand Lubricant Specificationsinin
thetheAppendicesAppendices))..
5. 5. ContContact a Cuact a Cummmmins Auins Authorthorizeizedd
Repair Facility.Repair Facility.
13.13. EngiEngine decelene deceler-r-
ates slowlyates slowly
1. 1. ElecElectrontronic faulic fault codes art codes are actie active.ve.
2. 2. AccAccelerelerator peator pedal is dal is stistickicking.ng.
1. 1. ReRefer fer to to thetheQSM11 Fault CodeQSM11 Fault Code
InformationInformationchart in this section.chart in this section.
2. 2. Check Check for for a stia sticking cking acceleracceleratorator
pedal.pedal.
3. 3. ContContact a Cuact a Cummmmins Auins Authorthorizeizedd
Repair Facility.Repair Facility.
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