Nissan Titan XD Cummins

For the 2016 model year, Nissan introduced Titan XD heavy-duty pickup with the optional 5.0L Cummins V8. This engine is based on a Cummins industrial engine, and differs from the inline 6-cylinder used in the Ram pickups in that it is an overhead cam design, and uses glow plugs instead of an air intake heater. Luke’s Auto Repair and Diesel is a full-service maintenance and repair provider for this truck. We offer fuel filter and air filter changes, as well as brake, suspension, transmission, and transfer case services. If you are looking for more power and reliability from your Titan Cummins, we offer coolant filtration kits, custom tunes, and cold air intakes.

Ford Cummins Conversions

If you have a Ford pickup with a Cummins diesel conversion, we can help. Each conversion is unique, so the services offered can vary. We can usually provide maintenance for the truck, including air filters, fuel filters, and transmission services. We can repair most problems on these conversions, as well, including oil leaks, injectors, and engine control issues. We also offer some power upgrade options, such as performance lift pumps and custom tuning. Many of the details listed on the Cummins page of this site would also apply to the engines used in these trucks. If you have questions or problems with your Ford Cummins conversion, please get in touch by calling or using the contact form.

 Ram 1500 EcoDiesel

Chrysler began selling the Ram 1500 pickup with the 3.0L V6 EcoDiesel for the 2014 model year. This ground-breaking option offered best in class fuel economy for the half-ton pickup segment. We are a full-service maintenance provider for this truck, including air filters, fuel filters, and transmission services. We also offer many repairs for this engine, including oil cooler replacements and coolant leaks. We also offer some performance options for this engine, including tuners, cold air intakes, and intercooler upgrades.

 Jeep Grand Cherokee EcoDiesel

Chrysler also put the 3.0L V6 EcoDiesel in the Jeep Grand Cherokee. We are a full-service maintenance provider for this engine, including air filters, fuel filters, and transmission services. Please call or use the contact form if we can assist you with your Grand Cherokee EcoDiesel.

Ram ProMaster EcoDiesel

The Ram ProMaster full-size van was available with a 3.0L EcoDiesel 4-cylinder. This is not the same engine used in the Ram 1500 pickups. We are a full-service maintenance provider for this van, including air filters, fuel filters, brakes, and suspension systems.

Dodge Sprinter

Dodge sold the Sprinter full-size van from 2003 to 2010 model years. It was equipped with the Mercedes-designed 2.7L inline-5 turbo diesel, as well as a 3.0L V6 diesel. We are a full-service maintenance provider for the Dodge Sprinter, including engine air filters, cabin air filters, and fuel filters. We also offer many repair services for this van, including glow plugs, turbo systems, brakes, alternators, and suspension and steering services.

Diesel Particulate Filter

What is a DPF?
Most 2008 and newer diesel trucks and vans are equipped with a DPF. The DPF is an emissions control device located in the diesel exhaust system that traps particulate matter created during engine operation. Periodically, the DPF must go through , or “regen,” process to burn off the particulates. This requires that exhaust temperatures be very high, often above 1,000 degrees Fahrenheit.

What is required for a regen event to happen?
Temperature is one of the biggest factors. The engine control system must be able to get the exhaust hot enough to initiate a regen. Trucks and vans that make frequent short trips often cannot achieve the proper thresholds. Driving on the highway for at least 30 minutes will often allow the system to regen.

What happens when a DPF malfunctions?
If a truck or van fails to complete a regen cycle, or cannot regen often enough, the DPF may begin to fill up and become a restriction in the exhaust system. An improper air/fuel ratio created by a weak turbo, stuck EGR valve, or the wrong tuning can also cause the DPF to fill up quickly. When this happens, the check engine light may come on, and the driver will often see warning messages, such as “Service Particulate Filter System.” If the condition continues, the control system may limit vehicle speed and power.

How do I fix a clogged DPF?
If you are seeing warning messages or engine trouble codes related to the DPF, please bring your diesel in for service as soon as possible. If the problem is addressed early, it is often less expensive to fix. Sometimes the problem can be fixed by using a professional scan tool to force a regen. General engine
control issues, such as turbo and EGR problems, can cause the DPF to clog prematurely. Malfunctioning exhaust sensors can also cause the conditions mentioned above, so accurate diagnostics are important to ensure the problem is solved correctly. Complete DPF replacement may be the needed
in some instances. Luke’s Auto Repair and Diesel offers diagnostic and repair services for the DPF systems on the vehicles mentioned above.

Do I need to delete the DPF f I want more power from my diesel?
No. It is possible to make substantial power gains over stock with the emissions system fully intact using the proper tuning and modifications. A DPF in good condition offers little restriction to the exhaust.

Diesel Exhaust Fluid (DEF)

What is DEF?

Most diesel trucks and vans have an on-board DEF system by the 2011 model year. DEF is a liquid injected into the exhaust to cause a chemical reaction and aid in emissions compliance. There is a tank mounted in the vehicle that must be filled periodically. The system includes a pump, level sensor, and heater in the tank, with a line leading to an electronically controlled injector mounted in the exhaust.

What is a DEF heater?
DEF will freeze at approximately 12 degrees Fahrenheit, so the tank contains a heater to ensure proper operation in cold temperatures. The heater is managed and monitored by the engine control system. If it malfunctions, it can set a trouble code and turn on the check engine light.

What happens when the DEF system malfunctions?
When the engine control system detects a fault with the DEF system, it will often turn on the check engine light and/or display a warning message, such as “Service Exhaust Fluid System.” Problems can range from failed DEF heaters to clogged DEF injectors. Luke’s Auto Repair and Diesel offers diagnostic and repair services for the DEF systems on the vehicles mentioned above.