Performance Check -Low Temperature ATD". Are the inlet NOx sensor and outlet NOx sensor readings within 50 Parts Per Million (PPM) of each other? a. Yes; Go to step 22. b. No; replace the inlet NOx sensor. Refer to section "Removal of the Selective Catalytic Reduction Inlet NOx Sensor". Go to step 22. 22. Reconnect the DEF dosing unit ...erite filter substrate, the filter peak temperature during regen - eration usually should be controlled under 1,100 °C to avoid filter melts, and the maximum temperature gradient usuallyMonitor temperature rise across DOC during regen. Little or no temperature rise indicates DOC not active. Monitor DOC inlet temperature. No temperature change after ... Pressure Sensor 85 Sensor Supply 86 Turbo Compressor In Temp 87 Intake Manifold Pressure Sensor 88 Sensor Ground 89 DOC Inlet Temp Sensor 90 Intake Air Throttle Valve …WIL2800030 DOC Damage as a Result of Improper Cleaning Aftertreatment for Drivers Document # Title IK1900158 2010 Dash Cluster Lamp Operation with new DPF Lamp Locations , Functions and Regeneration Instructions TSI 08-10-02 In-Cab Regeneration Visor Decals in English/French/Spanish (2007 Emissions) See FAQ's below13) Monitor DOC inlet temperature. It MUST be greater than 400°C (750°F). If it is not above 400°C (750°F), block off part of the radiator with cardboard. Be careful that coolant temperatures do not go high enough to cause a Check Engine ight.l 14) Continue to monitor the DOC inlet temperature to make sure it is greater than 400°C (750°F).Hi Mike. No fault codes, regen starts both fuel pressure s around 60 psi and temperature at doc raise normal above 600° the fuel dosing starts and dpf temperatures inlet and outlet raise until 750- to … read morea. If the DOC inlet pressure starts out above 10 kPa (1.45 psi) and decreases during a parked regen, this indicates that the DPFs were plugged and the parked regen has cleared them. Go to step 8. b. If the DOC inlet pressure starts above the pressure specified below and stays high, the DOC is considered plugged. Go to step 9. Table 1. Emissions ...9. Start the engine and run a Parked Regen. Monitor DOC inlet pressure and engine speed during the regen. Compare your DOC inlet pressure reading to the screen shots and descriptions below in (a and b) to determine what step to go to next. a. If the DOC inlet pressure starts out high above 10 kPa (1.45 psi) and decreases during the parked regen ...validation parked regeneration as noted in the troubleshooting. Troubleshooting for the 3711/31 fault should be completed to verify there is not an actual component issue causing low DOC inlet temperature such as a drifted DOC inlet temperature sensor or a sticking front Jake solenoid. COOLANT TEMPERATURE: 209F DOC INLET: 432F DPF INLET: 421F DPF OUTLET: 411F Last edited: Jun 10, 2017. 4vmach1, Jun 10, 2017. 4vmach1, Jun 10, 2017 #71 + Quote Reply. Trucking Jobs in 30 seconds. ... During one of the parked regen the delta-p set a out of range on the data monitoring, ...Monitor DOC inlet pressure and engine speed during the regen. Compare your DOC inlet pressure reading to the screen shots and descriptions below in (a and b) to determine what step to go to next. a. If the DOC inlet pressure starts out high above 10 kPa (1.45 psi) and decreases during the parked regen, this indicates the DPFs were plugged and ...2021年1月30日 ... My unit starts the regen but the DOC inlet temp is only getting to 420 degrees and is not allowing to burn off for the - Answered by a ...A) A forced regen will take approximately 40 minutes. It will cycle through 6 stages during this 40 minute period. If the Regen cycle takes longer than this, something else is still wrong. b) During a forced regen cycle, The DOC will get to about 550F, and the doser will activate, first, usually in short intervals, then come on solid.Fengjun Yan. Control of diesel oxidation catalyst (DOC) outlet temperature is critical for downstream diesel particulate filter regeneration, but is challenging to control due to the non-minimum ...2018年4月10日 ... During regen the exh temps are (inlet 739) (after cat 969-978) ... I would think if there was an issue with the DOC the inlet temp would be off and ...4. If present, check the condition of the insulation material around the exhaust pipe between the turbocharger and the ATD.. 5. Check the ATD mounting bands for tightness. If needed, tighten the mounting bands on horizon-tally and vertically mounted ATDs to 30 lbf·ft (41 N·m); on step-mounted ATDs, tighten the mount-ing bands to 15 lbf·ft (20 N·m).2013年2月12日 ... Monitor temperature rise across DOC during regen. Little<br />. or no ... Disconnect DOC Inlet Temperature Sensor and inspect connector for ...A) A forced regen will take approximately 40 minutes. It will cycle through 6 stages during this 40 minute period. If the Regen cycle takes longer than this, something else is still wrong. b) During a forced regen cycle, The DOC will get to about 550F, and the doser will activate, first, usually in short intervals, then come on solid.CM871 High DOC temp during regen - tariqzai - 04-12-2020. Hi everyone, I have regen issue with my 2009 Volvo with CM871. During Regen instead of DOC temp staying steady and DFP temps going up, this engine shows DPF outlet temp staying steady while DPF intake and DOC temps keep going up (1000+). I have this truck for 3 years and every forced ...Yellow (Solid or Flashing) to indicate the need to regenerate the Diesel Particulate Filter. ... Observe exhaust gas temperatures from DOC Inlet Temperature, DPF Inlet Temperature and DPF Outlet Temperature. ... perform 1 additional OBFCT. - Watch for temperatures to raise (please note that during high soot load levels the DOC and DPF ...The T2 sensor, at the DOC outlet, provides feedbacks for closed loop controls. A fast response control system ensures the DOC outlet temperature stays on target while engine operations vary considerably. To verify the tight DPF inlet temperature control, an active regeneration was enabled during a NRTC test. The results are shown in Figure 8 ... Solved Re HC DOSER WILL NOT ACTIVATE DURING REGEN - Page 2 - DTNA Solutions. Reply Description ARS: Engine Turbo speed 1 AAS: Fuel Cut Off Valve ASL: Torque …I have a MP8 not completing a regen, doser on 540 degrees dpf inlet 750 degrees dpf outlet 750 degrees When it reaches these temp the doser shuts off new doser, new dpf, cleaned doc, new ambient air temp sensor mack vin#8N001449 During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if directed at combustible materials. The vehicle must be parked outside. ... Refer to section "Removal of the Intake Pressure/Temperature Sensor". Verify repairs. 11. Visually inspect exhaust system for leaks or damage, including manifold, gaskets ...120–pin MCM connector and the Turbo Compressor Inlet, DOC Inlet, DOC Outlet, and DPF Outlet temp sensors. Verify repairs. [b] If no voltage is present on pin 1 of the intake air sensor, repair the open between pin 88 of ... during normal service. A stationary regen is required if the fault code is active. No action is required for an inactive ...Apr 7, 2013 · When the fan turns on the DOC temperature increases to almost 480F and as soon as the fan shuts off it goes back down to 440F. Obviously it's not reaching the 500F+ for the fuel to start dosing. No exhaust or boost leaks. Here are some of the data I wrote down during the parked regen: DPF DIFFERENTIAL PRESSURE: 0.1hg I have volvo d13 2016 it doesn’t raise temperature for Regen though the outlet temp sensor doesn’t go higher when 800 F ... 2018 volvo vnrRequred regen on dash does not Go awaySent filters out for cleaningInatlled back same thisOn regen doc temp stays at 600, dpf inlet 800 and dpf outler 470Put new 7th injector and 7th inj ...11. After the low temp ATD regeneration has run for 20 minutes, monitor the DOC outlet temperature sensor reading. Is the DOC outlet temperature sensor reading within 25°C (45°F) of the DOC inlet temperature sensor? a. Yes; replace the HC doser block. Refer to section "Removal of the Hydrocarbon Doser Block ". Verify repair. b. The addition of engine exhaust to intake air increases the over- all heat capacity of the charge, leading to a reduction of peak combustion temperature. Since ...The catalyst should also exhibit low light-off temperature, to enable active regeneration during periods of operation with lower engine load. Figure 4 illustrates the light-off performance with post injection of fuel and exhaust injection of fuel for a fresh and aged DOC. The x-axis represents the inlet temperature of the DOC.The inlet temperature was 200°C and the detector temperature was 220°C. Nitrogen was used as the carrier gas. There was a flow rate of 2 mL/min, no split injection, and an injection volume of 1 μL. The column was a DB-WAX-etr polar column (30.0 m×0.53 mm×1.00 μm).The temperature was kept constant as was the pressure at 4.40 psi.The furnace temperature heating program included: first held ...13) Monitor DOC inlet temperature. It MUST be greater than 400°C (750°F). If it is not above 400°C (750°F), block off part of the radiator with cardboard. Be careful that coolant temperatures do not go high enough to cause a Check Engine ight.l 14) Continue to monitor the DOC inlet temperature to make sure it is greater than 400°C (750°F).Mar 15, 2020 · The stage1 is before regeneration phase. The DOC inlet temperature, the DPF inlet temperature, and the DPF outlet temperature are sequentially lowered due to the heat loss. The stage2 is during regeneration phase. The DOC inlet temperature slightly reduces due to the vaporization heat of methanol. Apr 10, 2018 · After cleaning the doc it was reinstalled on the truck, reset doc/dpf counters. Performed manual stationary regen, the truck kicks up to 1200-1300 to start regen, the turbo speed starts at around 42k and turbo actuator 92%, egr valve position consistently stays at 0%, exhaust gas pressure about 140, intake manifold pressure about 12.5. Jan 18, 2020 · Mack MP8 regen issues. 2012 CXU613 with 2012 fault codes so it's not a 2013. Truck arrived at the shop at the beginning of the week. Soot load was level 5. performed a parked regen. DOC inlet temp was bias. DPF outlet temp stayed above inlet temp during regen. Monitor temperature rise across DOC during regen. Little<br /> or no temperature rise indicates DOC not active.<br /> Monitor DOC inlet temperature. No temperature change<br /> after engine startup indicates sensor problem.<br /> Listen for the ITV to sweep at key up.<br /> Turbo not functioning properly Perform a turbo …This pdf document provides technical service bulletin (TSB) for diesel engine vehicles with 1-Box or Two-Box emissions package. It explains how to diagnose and repair the Diesel Oxidation Catalyst (DOC) inlet pressure sensor and the DOC itself. It also includes the procedure for performing a parked regeneration.Just an FYI there will be no HC dosing for the first 12 ish minutes of the regen. The doc inlet temp will raise around that 700-800 degrees mark in that first 12 min to burn Soot …6. Start the engine and perform a Parked Regen. 7. Let the regen run for 22 minutes then monitor the DOC inlet pressure. Is the DOC inlet pressure reading at or above 8 kPa (1.16 psi)? a. Yes; the DOC is face plugged. Use the DOC air cleaning tool PN: DSN0ATZ16002. Refer to section "Diesel Oxidation Catalyst Air Cleaning". Verify repair. b. No ...A) A forced regen will take approximately 40 minutes. It will cycle through 6 stages during this 40 minute period. If the Regen cycle takes longer than this, something else is still wrong. b) During a forced regen cycle, The DOC will get to about 550F, and the doser will activate, first, usually in short intervals, then come on solid.During a parked regen on a DD15, the SCR Inlet NOx sensor should be around 200-300ppm. DD13 SCR Inlet NOx sensor is slightly higher around 400-500ppm. The SCR Outlet NOx should be somewhere in the neighborhood of 5-25ppm for all DD Platforms. The other true method in testing the NOx sensors is to perform a regular parked regen, then perform ...To create the thermal conditions necessary for soot regeneration in the CSF, fuel was injected into the exhaust pipe up-stream of the DOC (Fig.2). In this study the conditions for fuel injection were fixed to 25ml/min, 300°C inlet temperature and 49,000/hr space velocity for the DOC to generate a CSF inlet temperature of 600C.During an active regen, engine exhaust temp is slightly higher than normal but not significantly. Maybe 50 to 100 deg. F at best. The high temps are in the exhaust NOX/DPF filter. Everything upstream of that is pretty much normal from my observations. See this video on an entire active regeneration.The AFI wont kick in tell the DOC and DPF inlet temps reach 500+*f and the DOC temp must stabilize. Whats the turbo command %, turbo speed, boost pressure, EBP, and engine load during a regen? CAT Factory Trained & Cert. Heavy Equip+Truck Systems.3251** 2 Diesel Oxidation Catalyst (DOC) Inlet Pressure - Not Plausible ... During initial diagnostics, a log file should have been created/ reviewed. Review and record fault codes. ... [Driving Regens / (Driving Regens + Parked Regens)] = Driving Regen PercentageFault code 3719-0 doc in 450 doc out 480 dpf out 460ish I conforemed the exhaust flaper is closing when a regen is ... Intake Manifold Pressure/Temperature Sensor Turbo Inlet Pressure/Temperature Sensor Turbo Outlet Temp Sensor (MBE 900 only) Turbo inlet elbow Air inlet piping ... Have it installed but still not building heat during regen.Active regeneration system. In an active regeneration system, a burner and air compressor are used to bring the system back to its clean state. The exact period of regeneration can be determined by calculating the backpressure of the exhaust gases. When the backpressure of the exhaust gases reaches 10,000 Pa, regeneration will be …CM871 High DOC temp during regen. Hi everyone, I have regen issue with my 2009 Volvo with CM871. During Regen instead of DOC temp staying steady and DFP temps going up, this engine shows DPF outlet temp staying steady while DPF intake and DOC temps keep going up (1000+). I have this truck for 3 years and every forced regen i did was successful ...Blew out the DOCs during regen I have DPF inlet- 0.363 DPF outlet- 0.072 DOC inlet temp-813 DOC outlet temp-779 Fuel doser-0.0% Fuel cutoff valve- 0.0% Baro-14.43 Intake mani - 14.71 AFS tech, Aug 8, 2019. AFS tech, Aug 8, 2019 #7 + Quote Reply. Aug 8, 2019 #8. spsauerland Road Train Member.Aftertreatment inlet and aftertreatment Diesel Oxidation Catalyst. (DOC). 2 ... aftertreatment DOC. The oxidation of this additional fuel creates the heat ...Right away I noticed that the DOC inlet temperature reading was at 662 F (default max value as I found out) @ 1.7V, yet the outlet temperature was 419 F @ 1V . These thermo-couples run on 5V and generally have a much larger spread between temperature/voltage correlation. Now it was time to let the data talk.During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if directed at combustible materials. The vehicle must be parked outside. ... Refer to section "Removal of the Intake Pressure/Temperature Sensor". Verify repairs. 11. Visually inspect exhaust system for leaks or damage, including manifold, gaskets ...CM871 High DOC temp during regen - tariqzai - 04-12-2020. Hi everyone, I have regen issue with my 2009 Volvo with CM871. During Regen instead of DOC temp staying steady and DFP temps going up, this engine shows DPF outlet temp staying steady while DPF intake and DOC temps keep going up (1000+). I have this truck for 3 years and every forced ... During vehicle operation, active regeneration is performed when the accumulated soot and ash reach boundary limits. In this operation, the particulate soot is .... Oct 15, 2023 · CM871 High DOC temp during regen. Hi everyone, I have regen issue with my 2009 Volvo with CM871. During Regen instead of DOC temp staying steady and DFP temps going up, this engine shows DPF outlet temp staying steady while DPF intake and DOC temps keep going up (1000+). I have this truck for 3 years and every forced regen i did was successful ... Using DiagnosticLink during the regen, view AS087 Actual Fuel Mass. Is the fuel mass above 100 mg/st? Yes; ... My unit starts the regen but the DOC inlet temp is only getting to 420 degrees and is not allowing to burn off for the regen. I'm getting codes 4752, (intake manifold pressure sensor) 3719, 3711.9. Monitor DOC inlet and outlet temperatures. Are the temperatures within 25°C (45°F) of each other? 9.a Yes; Check valve lash and engine brake rocker lash. If either is out of adjustment, readjust the lash, perform a parked regeneration, and continue with the initial diagnostics that directed you to DOC inlet temperature will not Joined: May 2015. 1 03-21-2017, 02:27 AM. Good evening, I have a maxxforce 13 that won't do a passive regen. I've have clean and replaced the doser, I have removed and had the doc and dpf. I have replaced the map. During. Park Regen temps get to 1200 or so. I've checked the tubes for differential pressure sensor and they are clean.DPF inlet temperature: 550°C; Soot load: 4.1 g/dm3. It should be noted that there was almost no NO2 generation over the DOC during active regeneration. This ...If the system doesn't reach this then something is wrong with engine, not the DOC or injector. If the temps reach 525 or better and the inlet temp to the DPF stalls around 800 or is very very slow to reach 1000+ then something is wrong with the injector or DOC. Monitor these parameters during a regen, and you should have these values;How to spot a failed DOC.You can tell by watching your temperatures during a regen. If your DPF intake is lower then your DPF outlet, and theyre both above 8...During a proper regen, DOC inlet temp, or temp #1, should be about 550-600. DOC outlet temp, or temp #2, should be 1000-1200 degrees. DPF outlet temp should be 950 to 1200. In a healthy system, the engine injects fuel into the exhaust during a regen that the DOC burns to create the heat. The heat is used to BAKE down the collected soot …An icon is displayed on the InfoCenter; however, no action is required by the operator, and the machine may be operated as normal during this cycle. 3. Reset regeneration uses a combination of the intake throttle and post fuel injection to further raise the exhaust temperature to burn off the particulate matter. The High Exhaust Gas Temperature ...CM871 High DOC temp during regen - tariqzai - 04-12-2020. Hi everyone, I have regen issue with my 2009 Volvo with CM871. During Regen instead of DOC temp staying steady and DFP temps going up, this engine shows DPF outlet temp staying steady while DPF intake and DOC temps keep going up (1000+). I have this truck for 3 years and every forced ...During a parked regen on a DD15, the SCR Inlet NOx sensor should be around 200-300ppm. DD13 SCR Inlet NOx sensor is slightly higher around 400-500ppm. The SCR Outlet NOx should be somewhere in the neighborhood of 5-25ppm for all DD Platforms. The other true method in testing the NOx sensors is to perform a regular parked regen, then perform ...Also, is the DOC and DPF due for cleaning? It sounds like you have access to Insite. When running a regen you need to open up data monitor and watch all the exhaust temps and doser injector state. Once a regen is initiated the DOC inlet and DPF inlet need to reach about 525 -550 degrees.Active regeneration is usually not noticeable to the driver. The vehicle needs to be driven at speeds above 30 mph for approximately 20 to 30 minutes to complete a full regeneration. During regeneration, the exhaust gases reach temperatures above 1,000°F (550°C). Active regeneration is usually not noticeable to the driver. Ash Loading How to Reduce DPF Regens. Stiction is the sticky friction caused by byproducts of burnt oil. High pressure builds heat in tight-tolerance applications and extreme heat causes the oil to burn, oxidize and create layers of sludge and deposits. Fuel injectors, pistons, rings, and a variety of other engine components are continually susceptible to ...Jan 1, 2016 · The step response of DOC- out temperature can be acquired by injecting constant amount (i.e. 50 mg/s) of Diesel fuel into the exhaust pipe upstream of the DOC during different steady states (i.e. constant inlet temperature and mass flow rate of exhaust gas). Joined: May 2015. 1 03-21-2017, 02:27 AM. Good evening, I have a maxxforce 13 that won't do a passive regen. I've have clean and replaced the doser, I have removed and had the doc and dpf. I have replaced the map. During. Park Regen temps get to 1200 or so. I've checked the tubes for differential pressure sensor and they are clean.You said Doc inlet pressure was high and after regen the pressure dropped down ? Any noises coming out from -box during regen or during driving? mhyn, Nov 3, 2019. mhyn, Nov 3, 2019 #5 + Quote Reply. Nov 4, 2019 #7. jdpromo33 Bobtail Member. 13 2. Nov 3, 2019 0.Joined: May 2015. 1 03-21-2017, 02:27 AM. Good evening, I have a maxxforce 13 that won't do a passive regen. I've have clean and replaced the doser, I have removed and had the doc and dpf. I have replaced the map. During. Park Regen temps get to 1200 or so. I've checked the tubes for differential pressure sensor and they are clean.NOTE: Normal DOC pressure is less than 10 kPa (1.5 psi) for a 1-Box™ emissions package and 13 kPa (1.9 psi) for a Two-Box option. 38. Using DiagnosticLink, monitor DOC inlet pressure while performing a parked regeneration. Refer to section "Performing a Parked Regeneration Using DiagnosticLink® Standard". Does the DOC inlet pressure start ...I have a MP8 not completing a regen, doser on 540 degrees dpf inlet 750 degrees dpf outlet 750 degrees When it reaches these temp the doser shuts off new doser, new dpf, cleaned doc, new ambient air temp sensor mack vin#8N001449 During a stationary (parked) regeneration, these are the typical values for a healthy system. EGR Differential Pressure - Less than 12.7 mm-Hg [0.5 in-Hg] ... Using onsite I can get the engine to start the regen cycle but doc intake temp will not get above 500F.• Exhaust temperature drops between turbo and DOC/DPF Inlet. • Engine load is ... Enter Menu In The Digital Display Regen - REQUEST DIESEL PARTICUALTE FILTER ...Mar 15, 2017 · DPF regeneration temperature rising strategy chiefly considers two temperatures including DOC inlet temperature and the DPF inlet temperature. Temperature rising approaches is based on Great Wall 4D83 diesel engine whose performance parameters are listed in Table 1 and DPF experiment system is shown in Fig. 8. Secondary post injection (Post ... (10-25-2018, 09:04 PM) oscar0627 Wrote: (10-25-2018, 07:49 PM) reddan Wrote: Hi! I have DD15 GHG14 and when i start the regen in a couple mintes Exhaust Manifold is over heating (RED).- During the high speed portion of the test, inlet NOx levels remain above 500 ppm, and outlet NOx levels are approximately 300 ppm as expected. - DTC P220E may be generated when this condition is observed. Replacement of the sensor returns values to the expected range: - If the above condition is present: • Replace the Inlet NOx SensorWas given log file from last completed regen on the truck 10 days earlier. Comparing the 2, boost pressure and doc inlet pressure is slightly lower throughout regen. dpf out temp reaches above 1200 but doc out temp is above 1000 as well. Will upload if someone wants to compareMack MP8 regen issues. 2012 CXU613 with 2012 fault codes so it's not a 2013. Truck arrived at the shop at the beginning of the week. Soot load was level 5. performed a parked regen. DOC inlet temp was bias. DPF outlet temp stayed above inlet temp during regen.DOC not active. Monitor temperature rise across DOC during regen. Little or no temperature rise indicates DOC not active. DOC Inlet Temperature Sensor non-responsive. Monitor DOC inlet temperature. No temperature change after engine startup indicates sensor problem. Intake Throttle Valve not functioning properly. Listen for the ITV to sweep at ...Passive regeneration typically occurs when the temperature of the aftertreatment DPF is above 3160C [601 OF]. This occurs during highway driving or driving with heavy loads. Since passive regeneration occurs naturally, it is considered to be normal engine operation. No fuel is added to the exhaust stream during passive regeneration.Cummins ISX, ESN 79461593. DOC temp not getting above 410F during forced regen. DPF in and out teml hold at 408F. EGR closed, turbo actuator 80% closed, EGR diff pressure 0.015inHg, exhaust pressure 1 … read moreDPF inlet temperature: 550°C; Soot load: 4.1 g/dm3. It should be noted that there was almost no NO2 generation over the DOC during active regeneration. This ...Nov 13, 2014 · During a parked regen on a DD15, the SCR Inlet NOx sensor should be around 200-300ppm. DD13 SCR Inlet NOx sensor is slightly higher around 400-500ppm. The SCR Outlet NOx should be somewhere in the neighborhood of 5-25ppm for all DD Platforms. The other true method in testing the NOx sensors is to perform a regular parked regen, then perform ... Mar 18, 2018 · Tractor was towed in with engine warnings on, and in shutdown mode.Active faults for soot level high, and failed regen. due to temp. Inlet DOC temp only at 425, wont go high enough to start dosing fuel. Intake throttle valve is working. Will continue on diag tomorrow. Any thoughts? Thanks. After cleaning the doc it was reinstalled on the truck, reset doc/dpf counters. Performed manual stationary regen, the truck kicks up to 1200-1300 to start regen, the turbo speed starts at around 42k and turbo actuator 92%, egr valve position consistently stays at 0%, exhaust gas pressure about 140, intake manifold pressure about 12.5.Malfunctioning temperature sensors. The temperature sensors, spread through the aftertreatment system, measure the exhaust going into and out of each filter. The first sensor is in the DOC and the last is after the SCR. The sensor’s readings measure how well the system is working, and a faulty sensor can interfere with the regen process. 1 NUMBER: 2 ATS 07 S.M. REF.: Listed in Table 1 ENGINE: ATS DATE: April 2007 SUBJECT: UPDATES TO AFTERTREATMENT SYSTEM TROUBLESHOOTING PUBLICATION: 7SE63 The Aftertreatment System Technician's Guide has been revised. MANUAL REFERENCE Section 6.1, Mechanical Troubleshooting 9.1, SPN 3242/FMI , …Symptoms of a clogged DPF filter are excessive regens and long regens, last ing 60 minutes or longer. You can monitor temperatures/pressures when doing a forced regen to make sure everything is in range and working properly. Faulty …Jan 18, 2020 · Mack MP8 regen issues. 2012 CXU613 with 2012 fault codes so it's not a 2013. Truck arrived at the shop at the beginning of the week. Soot load was level 5. performed a parked regen. DOC inlet temp was bias. DPF outlet temp stayed above inlet temp during regen. No; replace the drifted SCR temperature sensor and Go to step 11. Review the parked regen log file. Compare your DOC inlet pressure reading to the screen shots below (steps 12, 13, and 14) to identify a possible cause of the aftertreatment noise. Is the DOC Inlet Pressure starting out high above 10 kPa (1.45 psi) and decreases during a parked ... The T2 sensor, at the DOC outlet, provides feedbacks for closed loop controls. A fast response control system ensures the DOC outlet temperature stays on target while engine operations vary considerably. To verify the tight DPF inlet temperature control, an active regeneration was enabled during a NRTC test. The results are shown in Figure 8 ...11. After the low temp ATD regeneration has run for 20 minutes, monitor the DOC outlet temperature sensor reading. Is the DOC outlet temperature sensor reading within 25°C (45°F) of the DOC inlet temperature sensor? a. Yes; replace the HC doser block. Refer to section "Removal of the Hydrocarbon Doser Block ". Verify repair. b.I have a MP8 not completing a regen, doser on 540 degrees dpf inlet 750 degrees dpf outlet 750 degrees When it reaches these temp the doser shuts off new doser, new dpf, cleaned doc, new ambient air temp sensor mack vin#8N001449 Obtain a Regeneration log file and monitor the DOC inlet and DPF outlet pressures. Refer to section "Performing a Parked Regeneration - GHG17". Does the DOC inlet pressure ever go to zero during the regeneration? a. Yes; replace the DOC Inlet Pressure sensor. For 1-Box™, Refer to section "Removal of the Diesel Oxidation Catalyst Inlet ...02/02/2018 - Added temp differential test in step 2 01/03/2018 - Due to Cummins software changes, removed ROA test (previously step 2) DESCRIPTION This document will guide the user through resolving frequent regen issues on vehicles equipped with an ISB 6.7. SYMPTOM(s) Diagnostic Trouble Code(s) & Dashboard Indicator …Refer to section "Removal of the EPA07 Temperature Sensors". Verify repair. 5. Monitor the DPF outlet pressure (pin 30) parameter. Is the DPF outlet pressure sensor voltage between 0.44 and 0.56 ... Remove the DOC inlet pressure sensor tube, hose and elbow. Refer to section "Removal of the EPA10 Diesel Oxidation Catalyst Inlet Pressure Sensor ...I have volvo d13 2016 it doesn’t raise temperature for Regen though the outlet temp sensor doesn’t go higher when 800 F ... 2018 volvo vnrRequred regen on dash does not Go awaySent filters out for cleaningInatlled back same thisOn regen doc temp stays at 600, dpf inlet 800 and dpf outler 470Put new 7th injector and 7th inj ...