High Exhaust Temperature Peterbilt, During and shortly after the e
High Exhaust Temperature Peterbilt, During and shortly after the event, the exhaust gases from the DPF may reach temperatures in excess of 650 C (1200 F). Inspect the NH3 sensor wiring and connections for damage or corrosion. Aug 15, 2025 路 Exhaust bushings Exhaust Bushing Made in USA Black Polyurethane (4 Units Package) 2 thumbs up 馃憤 馃憤 Lou V. It helps keep the website costs at bay and goes towards helping others with their trucks. com for help with exhaust bushings. When regeneration is complete, the engine ret activates and the engine returns to idle. Jun 28, 2019 路 I have a 2012 Freightliner Cascadia with Cummins ISX and the high exhaust temp light turns on every time I come to a full stop. Codes 578 and 101 indicate high exhaust temperature, often caused by a faulty NH3 (ammonia) sensor or restricted exhaust flow. Any suggestions? Jun 29, 2024 路 To fix high exhaust temperature, check for clogged/damaged parts, adjust timing setting, and reduce engine load. What They Do: During and shortly after the event, the exhaust gases from the DPF may reach temperatures in excess of 650 C (1200 F). Decrease in FIC Target Engine Speed on a Long Press of the RESUME/DECEL SWITCH (AA01111). Made with durable polyurethane, this kit includes everything you need for a secure and long-lasting installation. Usually lights up when your truck is in active rolling regen at low speed. It still deals with hard facts but in a "thinking about it from a different perspective flavor" Jan 16, 2015 路 Jump to page : 1 Now viewing page 1 [50 messages per page]. Nov 19, 2024 路 When the high exhaust temp light comes on, it’s important to address it promptly to prevent damage to your vehicle. Timely corrective measures can ensure optimal engine functioning and longevity. It is an advisory light that reminds you to not park on dry grass or near othe High EGT in the Peterbilt 567 with a Cummins X15 can result from restricted exhaust flow, often due to a clogged diesel particulate filter (DPF) or malfunctioning turbocharger. Jul 19, 2013 路 Not sure about trucks but construction equipment need to display a high exhaust temperature warning light during regen to notify the operator that a regen is in progress. Addressing these promptly is crucial to prevent damage. . Call Steve at 1-800-358-4751 or visit TruckSpring. What is important to note is this is not a malfunction light. 10/15/2025 Atro EM75-69096-HT high temperature exhaust bushing for Peterbilt trucks. Increase in FIC Target Engine Speed on a Long Press of the SET/ACCEL SWITCH (AA01110). When working on the vehicle, be alert for hot parts on systems that have just been turned off, exhaust gas flow, and hot fluids in lines, tubes, and compartments. The Peterbilt Exhaust Mount Bushing Kit is a practical and high-quality solution for your exhaust system needs. The purpose of the High Exhaust System Temperature (HEST) warning light is to notify the operator to high temperatures in the vicinity of the tail pipe, diesel particulate filter (DPF), and surrounding components during a regeneration. Additionally, Temperature of the tail pipe, exhaust pipe, the diesel particular filter (DPF) / selective catalytic reduction (SCR) de-vice and surrounding components in-cluding enclosures and steps, will be elevated during and shortly after a re-generation event or normal vehicle op-eration when engine is under high or heavy loading. Heavy-duty rigs like Peterbilt use large radiators designed for high heat loads and long highway runs. I'm not losing any power but I have to climb grades at a lower gear than usual to keep my temp down. Jun 28, 2019 路 I have a 2012 Freightliner Cascadia with Cummins ISX and the high exhaust temp light turns on every time I come to a full stop. I was having a clogged A Dura-Lite™ replacement radiator is the core of your engine’s cooling system; it removes heat from engine coolant so your Peterbilt diesel engine stays at safe operating temperatures. And, how would you like to connect with the Mechanic - phone call or online chat? We would like to show you a description here but the site won’t allow us. Temperature of the tail pipe, exhaust pipe, the diesel particular filter (DPF) / selective catalytic reduction (SCR) de-vice and surrounding components in-cluding enclosures and steps, will be elevated during and shortly after a re-generation event or normal vehicle op-eration when engine is under high or heavy loading. Jun 4, 2012 路 I have a 379 Peterbilt and my pyro temp has been running hot. It still deals with hard facts but in a "thinking about it from a different perspective flavor" Mar 6, 2023 路 Cummins High Exhaust Temp Light According to the Cummins engine light identification guide, this is just an advisory light that tells you that exhaust temperatures are higher than normal due to a regen process taking place. The Peterbilt Mechanic can help with your C-15's high exhaust temperature issue. HEST light, or High Exhaust System Temperature. 32 Temperature of the tail pipe, exhaust pipe, the diesel particular filter (DPF) / selective catalytic reduction (SCR) de-vice and surrounding components in-cluding enclosures and steps, will be elevated during and shortly after a re-generation event or normal vehicle op-eration when engine is under high or heavy loading. Let's read on. Then it is telling you to not park anywhere near flammable items. The lunch room is casual conversation bouncing around Ideas. High Exhaust System Temperature (HEST) Lamp illuminates. May 18, 2025 路 The high exhaust temp light indicates potential engine issues, such as a clogged filter or malfunctioning sensor. Checking for fouling in the turbocharger and understanding DPF regen procedures can help keep exhaust temperatures in check. Jun 19, 2025 路 Following these step-by-step guides on how to fix high exhaust temperature can help you identify and resolve issues causing high exhaust temperature, ensuring optimal engine performance and prolonging the life of your vehicle. See the information in the table below on probable causes and recommended actions related to the warning lights and indicator symbols of the ATS. This light can be triggered after an after-treatment regeneration. I was having a clogged DPF and I took it to the shop and had them take it out and clean it so I'm not sure if those two are related. Perfectly okay, it indicates that your exhaust is hotter than normal and might be hot enough to catch things near the exhaust tip on fire. 39 Aug 16, 2023 路 How to fix high exhaust temperature? Discover effective solutions to reduce excessive exhaust heat and improve engine performance. Check for soot buildup or damage in the DPF and inspect the turbocharger’s wastegate operation. If the DPF Lamp illuminates again, manual regeneration must be re DPF outlet temperature Noise: If the truck shuts down during a regeneration, the CRS purge air pump will run f 4 days ago 路 A big THANK YOU For those who have recently Contributed towards keeping the lights on around here. This is a little warning that the exhaust temperature is hotter than normal. High exhaust temperature can lead to various engine issues and reduced performance. It is crucial to address this problem promptly to prevent further damage and maintain engine efficiency. lhg5, wouhwt, ccln, awl2, tt8w7, pzmq, 7e1p1, lu8j, ts6wl, 0h9k,