Smokey exhaust? Engine feeling sluggish? There’s no better way to power up your Caterpillar 3406E than with a New Turbocharger (1080003) from HHP.
Continue reading Caterpillar 3406E Turbocharger (1080003)Tag: Turbocharger
VGT Turbo Advantages (What Makes Variable Geometry Turbos Better?)
One of the biggest advantages of a Variable Geometry Turbo (VGT) isn’t just efficiency – it’s how it controls airflow at low engine speeds.
Because of this, VGT turbos can improve performance across a wider RPM range.
However, when that system stops working correctly, the engine feels completely different – and performance drops fast.
Continue reading VGT Turbo Advantages (What Makes Variable Geometry Turbos Better?)VGT Turbo Problems and Symptoms: How Variable Geometry Failures Affect Boost, Heat, and Engine Performance
A Variable Geometry Turbocharger (VGT) does more than create boost.
It actively controls airflow, exhaust energy, and turbo speed across different engine conditions.
When a VGT system starts to fail, the issue is not just loss of power – it affects:
- Boost Pressure Control
- Exhaust Gas Temperature (EGT)
- Air-Fuel Ratio
- Emissions System Performance
Understanding how a VGT works – and how it fails – is key to diagnosing problems correctly.
Continue reading VGT Turbo Problems and Symptoms: How Variable Geometry Failures Affect Boost, Heat, and Engine PerformanceWhy Diesel VGT Turbo Vanes Stick (And How to Tell If It’s the Turbo or the Actuator)
Variable Geometry Turbochargers (VGTs) are designed to adjust airflow dynamically—but when they fail, one issue shows up more than any other:
Sticking vanes. If the vanes can’t move, the turbo can’t control boost properly.
And that leads to:
- Low power
- Overboost or underboost
- High exhaust temperatures
- Fault codes
The challenge is this:
Not every VGT problem is actually a bad turbo.
Continue reading Why Diesel VGT Turbo Vanes Stick (And How to Tell If It’s the Turbo or the Actuator)Highway & Heavy Parts Answers Your Diesel Engine Questions: Turbochargers
Here at Highway & Heavy Parts, we sell a lot of turbochargers. We carry a number of the industry’s leading brands for all major OEMs, and have helped diagnose a lot of our customers’ turbo failures. We provide solutions to help get them back on the road.
Continue reading Highway & Heavy Parts Answers Your Diesel Engine Questions: TurbochargersWhen Should You Replace Your CAT C15 ACERT Diesel Engine Turbo?
As you probably know, one of the main differences between the Caterpillar C15 diesel engine and the C15 ACERT is the fact that the ACERT is designed with two turbochargers. That makes this component even more vital to the overall function and health of your diesel engine.
Continue reading When Should You Replace Your CAT C15 ACERT Diesel Engine Turbo?VGT Options for Your Cummins ISX Diesel Engine
You’ve probably seen the term VGT or variable geometry turbocharger thrown around a lot when talking about diesel engines. You’ve probably heard even more about the problems they cause and money they can cost operators. How it’s easier and cheaper just to delete the system.
Continue reading VGT Options for Your Cummins ISX Diesel EngineWhy Diesel Engine Oil Changes are Key for Your VGT Turbo
Contrary to what you may have heard, changing your oil regularly can help extend the life of your engine and save you money. It’s actually one of the cheapest routine maintenance actions you can perform on your diesel truck.
Continue reading Why Diesel Engine Oil Changes are Key for Your VGT TurboWhy Oil Starvation Destroys Diesel Turbochargers
A turbocharger failure can look like a bad part.
Loss of power. Smoke. Noise. Oil leaking. Shaft play.
But in many heavy-duty diesel engines, the turbocharger is not the real starting point of the failure. The damage often begins somewhere else in the lubrication system.
The number one issue that destroys turbochargers is oil starvation. When a turbo does not receive a steady supply of clean, pressurized oil, internal damage can happen fast: sometimes within seconds under load.
Continue reading Why Oil Starvation Destroys Diesel TurbochargersCummins ISC 8.3L, ISL Short VGT Turbocharger (4352528RX)
Caterpillar C15, 3406E Turbocharger (177148): Boost, Failure, and What Happens When It Goes Bad
On a Caterpillar C15 or 3406E, the turbocharger isn’t just about power – it’s about air control, combustion efficiency, and engine balance.
When the turbo is working correctly, you get:
- Proper Air-to-Fuel Ratio
- Clean Combustion
- Consistent Power Under Load
When it starts to fail, everything changes – and it usually shows up under load first.
Continue reading Caterpillar C15, 3406E Turbocharger (177148): Boost, Failure, and What Happens When It Goes BadTurbocharger Cartridges (CHRA): How Jrone Turbo Cores Restore Performance Without Replacing the Full Turbo
When a turbocharger fails, the damage is often concentrated in one place:
The center housing rotating assembly (CHRA).
This is the core of the turbocharger – and in many cases, replacing it is the most efficient way to restore performance.
Continue reading Turbocharger Cartridges (CHRA): How Jrone Turbo Cores Restore Performance Without Replacing the Full TurboCaterpillar C13 Turbocharger (10R2473)
Should You Replace the CHRA or the Entire Turbocharger? What Diesel Owners Need to Know
When a turbocharger fails, most people ask the same question:
Should you rebuild it with a cartridge (CHRA), or replace the entire turbo?
The answer depends on what actually failed.
And getting that wrong can cost you more than the turbo itself.
Continue reading Should You Replace the CHRA or the Entire Turbocharger? What Diesel Owners Need to KnowVolvo D13 / Mack MP8 Turbo Overspeed Failure: What Causes It And Why Replacing The Turbo Isn’t Enough
Turbocharger failure on a Volvo D13 or Mack MP8 engine isn’t always caused by wear – it’s often the result of turbo overspeed conditions driven by VGT control issues, exhaust imbalance, or air system faults.
In many cases, the turbo fails because it was forced to operate outside of its design limits – not because the turbo itself was defective.
Understanding what causes turbo overspeed is critical to preventing repeat failures.
Continue reading Volvo D13 / Mack MP8 Turbo Overspeed Failure: What Causes It And Why Replacing The Turbo Isn’t EnoughWhy Diesel Engines Use Turbochargers Instead of Superchargers
If you spend any time around diesel engines, you’ll notice something quickly:
👉 Almost all of them are turbocharged.
That’s not by accident.
While both turbochargers and superchargers are designed to increase air pressure into the engine, diesel engines overwhelmingly rely on turbochargers – and there are specific engineering reasons why.
Continue reading Why Diesel Engines Use Turbochargers Instead of SuperchargersDetroit Diesel Series 60 14L Turbocharger: Symptoms, Failure Causes, and When to Replace
The turbocharger on a Detroit Diesel Series 60 14L engine does more than add power.
It controls airflow, and airflow controls combustion.
When the turbo isn’t performing correctly, the entire engine starts to fall out of balance.
Continue reading Detroit Diesel Series 60 14L Turbocharger: Symptoms, Failure Causes, and When to ReplaceDiesel Turbocharger Sounds: What They Mean and When to Inspect
A diesel turbocharger is not silent.
A light whistle, whoosh, or spool sound under load can be completely normal. However, when the sound changes suddenly, gets louder, or comes with smoke, low power, or oil consumption, it can point to a problem in the turbocharger system.
The key is not just hearing the sound.
It is understanding what kind of sound it is, when it happens, and what else the engine is doing at the same time.
Turbocharger noise can come from the turbo itself, but it can also come from boost leaks, exhaust leaks, restricted air filters, fuel system problems, damaged exhaust components, or lubrication issues. Garrett specifically notes that noisy performance, low power, smoke, and oil consumption can come from underlying engine problems—not always the turbocharger itself.
Continue reading Diesel Turbocharger Sounds: What They Mean and When to InspectWhy Garrett Turbochargers Are Trusted Worldwide in Heavy-Duty Diesel Engines
When a turbocharger fails on a working diesel engine, it’s not just a parts issue: it’s downtime, lost revenue, and often a deeper underlying problem.
That’s why the turbocharger you choose matters.
Across Caterpillar, Detroit Diesel, and International/Navistar platforms, one name consistently shows up in both OEM applications and reliable aftermarket replacements: Garrett Turbochargers.
There’s a reason for that.
Garrett turbos aren’t just widely used – they’re engineered for consistency under load, thermal durability, and long-term reliability in real-world conditions.
Continue reading Why Garrett Turbochargers Are Trusted Worldwide in Heavy-Duty Diesel EnginesLow Boost Diesel No Check Engine Light: Causes and Diagnosis
If you’re dealing with low boost diesel no check engine light, you’re not alone.
This is one of the most common complaints we hear.
It’s also one of the most misdiagnosed. And because there’s no fault code, it’s easy to assume:
- The issue isn’t serious
- It’s electrical
- Or nothing is actually wrong
In reality, low boost with no warning light is usually a mechanical or system efficiency issue.
Continue reading Low Boost Diesel No Check Engine Light: Causes and DiagnosisTurbocharger Cartridge vs Full Replacement: What Actually Fails Inside a Diesel Turbo
When a diesel turbocharger fails, the first question is always:
Should you replace the cartridge – or the entire turbo?
Most answers online are surface-level. But if you want to avoid repeat failures, you need to understand what actually fails inside the turbocharger.
Because the wrong choice doesn’t just cost money – it can lead to another failure within hours of startup.
Continue reading Turbocharger Cartridge vs Full Replacement: What Actually Fails Inside a Diesel TurboWhy Your Caterpillar C15 ACERT Turbocharger Might Not Be the Real Problem
If you’re dealing with low power, smoke, or oil around the turbo on a Caterpillar C15 ACERT, it’s easy to assume the turbocharger has failed.
But that’s not always the case.
At Highway and Heavy Parts, we see this all the time – turbos get replaced, but the original problem is still there. That’s because many turbo “failures” are actually symptoms of fuel system issues, oil problems, or internal engine wear.
Before replacing your turbo, it’s critical to understand what’s really going on.
Continue reading Why Your Caterpillar C15 ACERT Turbocharger Might Not Be the Real Problem
