7.3 Powerstroke vs 5.9 Cummins Ultimate Guide
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7.3 Powerstroke vs 5.9 Cummins Ultimate Guide

ByChandler

If you were looking for turbo-diesel power in the 1990s and early-2000s, you had two main choices: Ford’s 7.3 Powerstroke V8 or Dodge’s 5.9 Cummins I6. These were some of the first modern diesels to have direct injection and turbochargers as standard, opening up entire new worlds of performance opportunities. Though now long out of…

Best 12v 5.9 Cummins Performance Upgrades
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Best 12v 5.9 Cummins Performance Upgrades

ByChandler

The 5.9 Cummins 12v earned a legendary reputation for reliability. The engine is also extremely strong, making it a prime candidate for performance modifications and upgrades. However, these engines are mechanically driven which makes them a bit more challenging to modify. While it isn’t as simple as just dropping a tune on it, there are…

5.9 Cummins Cold Air Intake Upgrade Guide
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5.9 Cummins Cold Air Intake Upgrade Guide

ByZach Mayock

While both versions of the 5.9 Cummins offered solid power for their times, they are significantly underpowered compared to the diesel engines of today. Fortunately, a handful of performance mods can easily liven it up and give it more life. One of the best upgrades is a 5.9 Cummins cold air intake. An upgraded intake…

5.9 Cummins Intake Manifold Upgrades
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5.9 Cummins Intake Manifold Upgrades

ByZach Mayock

The 5.9 Cummins is legendary in the diesel world for many reasons. However, by modern diesel standards it’s a bit lacking in power and torque. Fortunately, it has plenty of untapped potential. A few basic mods can truly take it to the next level. Among the best upgrades is an intake manifold, also known as…

5.9 Cummins 12V vs 24V Cummins Turbodiesel
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5.9 Cummins 12V vs 24V Cummins Turbodiesel

ByZach Mayock

Dodge Ram 5.9 Cummins engines are often regarded as some of the most reliable light truck turbodiesel engines ever. The 12v Cummins, also known as the 6BT, has a legendary reputation for reliability. However, the newer 24v 5.9 (ISB 5.9) Cummins is still an excellent, reliable diesel engine with a few pros of its own….

The 5 Most Common Cummins 5.9L 12v Engine Problems
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The 5 Most Common Cummins 5.9L 12v Engine Problems

ByJake Mayock

The Cummins 12v is a legend when it comes to reliability. It is widely considered to be one of the most reliable diesel engines ever produced in consumer trucks. However, they still suffer common problems with such as the killer dowel pin, heater grid failure, TPS failure, and p-pump overflow valve issues. The p-pump version…

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5.9 12 Valve Cummins Diesel – Adjust Idle Speed

ByDieselIQ

In this article, we discuss the 1994-98 Dodge Ram 12 valve Cummins Diesel Engine Idle Speed Adjustment. Towards the end of the article we include a helpful video detailing the steps to adjust the Cummins 5.9 12v idle speed. Correct Idle speed is: Automatic Transmission – in drive with AC on 750-800 RPM Manual Tansmission…

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Cummins Diesel 5.9 Engines – Killer Dowel Pin

ByZach Mayock

5.9 12v Cummins Killer Dowel Pin Problems The 5.9L Cummins 12-valve diesel engines, manufactured between 1988 and 1998, feature a steel dowel pin that locates the front timing gearcase. Over time, this steel dowel pin can wobble out due to the constant heat cycles and vibrations of the engine. If (or when) the dowel pin works its…

Cummins Diesel 5.9 Liter B Series Engines
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Cummins Diesel 5.9 Liter B Series Engines

ByZach Mayock

The Cummins Diesel 5.9 liter Engine 6BT, aka the Cummins “12-valve” was the first member of the “B” engine family to be used in a light truck vehicle. The 6BT used Robert Bosch GmbH fuel systems, injector, and VE rotary pump and P7100 inline injection pumps. Some early 6BT’s were supplied with CAV rotary pumps…