THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
1-181-18
PPrroobblleem m CCaauusse e CCoorrrreeccttiioonn
20.20. EngiEngine runs rone runs roughugh
or misfiresor misfires
(Continued)(Continued)
2. 2. EngiEngine operne operatinating in low g in low ambiambientent
temperatures.temperatures.
3. 3. ElecElectrontronic faulic fault codes art codes are actie activeve..
4. 4. FuFuel el leleak.ak.
5. 5. Fuel Fuel gradgrade is noe is not cort correcrect or fut or fuelel
quality is poor.quality is poor.
6. 6. AiAir ir in tn the fhe fueluel..
7. 7. Fuel Fuel filfilter(ter(s) ars) are plugge plugged.ed.
8. 8. OverOverhead adjhead adjustustmentments are is are incorncor--
rect.rect.
9. 9. EngiEngine mone mounts unts are ware worn oorn or damr dam--
aged.aged.
2. 2. RefeRefer to r to the Cthe Cummummins ins EnginEnginee
Operation and MaintenanceOperation and Maintenance
Manual.Manual.
3. 3. ReRefer fer to to thetheQSM11 Fault CodeQSM11 Fault Code
InformationInformationchart in this section.chart in this section.
4. 4. ChecCheck the fuek the fuel linl lines, fues, fuel conel connec-nec-
tions, and the fuel filters for leaks.tions, and the fuel filters for leaks.
5. 5. RefeRefer to Corr to Correcrection 1. otion 1. of Probf Problemlem
17. of this troubleshooting chart.17. of this troubleshooting chart.
6. 6. ChecCheck for aik for air in the fr in the fuel and tiuel and tightenghten
fuel connections and fuel connections and filterfilter..
7. 7. ReplReplace face fuel fuel filtilter(er(s).s).
8. 8. MeasMeasure anure and adjusd adjust the ovt the overheaerheadd
settingssettings. . Refer to tRefer to the Cummihe Cumminsns
Engine Operation and Mainte-Engine Operation and Mainte-
nance Manual.nance Manual.
9. 9. VisVisuallually checy check engik engine mounne mounts andts and
replace if necessary.replace if necessary.
10.10. Contact a CumContact a Cummins Authormins Authorizedized
Repair Facility.Repair Facility.
21.21. EngiEngine shuts ofne shuts offf
unexpectedly orunexpectedly or
dies during decel-dies during decel-
erationeration
1. 1. ElecElectrontronic faulic fault codes art codes are actie active.ve.
2. 2. BattBattery very voltoltage suppage supply to tly to the eleche elec--
tronic control module (ECM) hastronic control module (ECM) has
been lost.been lost.
3. 3. EngiEngine wine will nll not reot restarstart.t.
4. 4. Fuel iFuel inlet rnlet restrestrictiction or air iion or air in then the
fuel.fuel.
5. 5. Low Low battbattery ery voltvoltage.age.
6. 6. LoosLoose wire wire on mase on master diter discosconnectnnect
switch.switch.
7. 7. Fuel Fuel cutocutoff vff valve ialve is cls closed.osed.
8. 8. 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. ChecCheck the batk the battertery conney connectictions.ons.
Check the fuses and the un-Check the fuses and the un-
switcswitched hed battery supply battery supply circcircuit.uit.
3. 3. RefeRefer to Prr to Probleoblems 14ms 14. and 15. . and 15. ofof
this troubleshooting chart.this troubleshooting chart.
4. 4. Check Check fuel tanfuel tank, fuel k, fuel filterfilter, fuel, fuel
lines, connections and fuel coolinglines, connections and fuel cooling
plate.plate.
5. 5. ChecCheck battk battery poery power swer supplupply ciry cir--
cuits.cuits.
6. 6. IsolIsolate and tiate and tighten wighten wire connre connectiection.on.
7. 7. ChecCheck for lk for loose woose wireires and pows and power toer to
the fuel cutoff valve solenoid.the fuel cutoff valve solenoid.
8. 8. RefeRefer to Corr to Correcrection 1. otion 1. of Probf Problemlem
17. of this troubleshooting chart.17. of this troubleshooting chart.
9. 9. ContContact a Cuact a Cummmmins Auins Authorthorizeizedd
Repair Facility.Repair Facility.
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