Courtesy of the Turbo Diesel Register.

Bosch VP44 Diesel pump fitted to Audi A4 & A6 vehicles This is a very common problem for all Audi A4 and A6 vehicles with the 2.5 TDI V6 engine built between 1997 and 2003. The mechanical side of the pump is usually very reliable and gives very few problems, nearly all of the faults we see are caused by the Electronic Diesel Control unit (EDC) located on the top of the diesel pump. When it comes to the VP44 fuel injection pump that is used on '98.5-'02 Dodge Cummins Turbo Diesel truck, there is none better than Blue Chip Diesel of East Derry, New Hampshire. If you think you are having trouble with the VP44 in your truck, you need to read the entire article we've linked to. This article gets updated frequently, so check back.

As is human nature, often you still want written backup as a post-conversation reference.
The source that we always recommend: The Turbo Diesel Buyer's Guide (TDBG).

Visit our blog for more technical information and product information.

GENERAL INFORMATION

FREQUENTLY ASKED QUESTIONS Download PDF (1mb)
In this FAQ document you will find that we've given a concise answer to each question and often referenced detailed (often four to six page articles) where the reader can get more information.

MOST POPULAR FAQ Download PDF (.5mb)
We address the most common questions our tech support people get about the Ram Cummins Turbo Diesel trucks.

WHAT'S WRONG WITH MY TRUCK? Download PDF (3.5mb)
The staff at Geno’s Garage (with help from our friends at the Turbo Diesel Register) presents a list of Ram Cummins Turbo Diesel flaws and fixes.

'94-'98 DODGE DIESEL 'NO START' CONDITION Download PDF (1mb)
Read about a common 'No Start' condition that can be caused by the fuel solenoid and how to test for it.

'94-'02 'SPORT' HEADLIGHT CONVERSION - TDR 77Download PDF (2.3mb)
Here is how you go about converting the stock single bulb (high and low filament) headlights to the dual bulb 'Sport' headlights that Dodge offered in Sport model trucks from '99-'02.

TURBO DIESEL REGISTER

THE PERFECT COLLECTIONDownload PDF (15mb)
A collection of 'best of' articles from the Turbo Diesel Register's staff of writers and members.

TDR BUYER'S GUIDE Download PDF (12.5mb)
Learn the issue about the value and economy of owning a Ram Cummins Turbo Diesel truck.

TDR BUYER'S GUIDE - VOLUME 2017 Download PDF (8mb)
What you should know about the 2017 Ram Turbo Diesel truck.

TDR BUYER'S GUIDE - VOLUME 2016 Download PDF (8mb)
What you should know about the 2016 Ram Turbo Diesel truck.

TDR BUYER'S GUIDE - VOLUME 2015 Download PDF (8mb)
What you should know about the 2015 Ram Turbo Diesel truck.

TDR BUYER'S GUIDE - VOLUME 2014 Download PDF (8mb)
What you should know about the 2014 Ram Turbo Diesel truck.

TDR BUYER'S GUIDE - VOLUME 2013 Download PDF (7mb)
What you should know about the 2013 Ram Turbo Diesel truck.

TDR BUYER'S GUIDE - VOLUME 2010-2012 Download PDF (7mb)
What you should know about the 2010-2012 Ram Turbo Diesel trucks.

TDR BUYER'S GUIDE - VOLUME 2003-2009 Download PDF (8mb)
What you should know about the 2003-2009 Ram Turbo Diesel trucks.

DIAGNOSTIC TROUBLE CODES AND YOU - TDR BUYER'S GUIDE Download PDF (1mb)
Diagnostic Trouble Codes (DCT) for the Dodge Turbo Diesel owner. Find out what they mean.

WISH I'D KNOWN THAT - TDR 77 Download PDF (1.8mb)
Some of the most common problems with the Ram Cummins Turbo Diesel trucks.

FUEL SYSTEM

DEMYSTIFYING THE '98-'02 DODGE DIESEL FUEL PRESSURE GAUGE Download PDF (1mb)
One of the most common questions we get is about testing the fuel pressure, which gauge to buy and how to install a fuel pressure gauge in a '98-'02 Dodge Cummins Diesel truck. We answer that for you in this brief tech sheet.

SO YOU WANT FUEL ECONOMY Download PDF (1mb)
A look at what the Turbo Diesel Register has learned about what works and what doesn't to improve the fuel mileage of your Turbo Diesel truck.

DODGE DIESEL TRUCK FUEL TRANSFER PUMPS REVISITED - TDR BUYER'S GUIDE Download PDF (2mb)
While this article focuses on the '98.5-'02 truck owners, this collection of TDR oldies also has tips for the '94-'98 12-valve owners and '03-'07 owners. The information was pulled from our issue 32, 48, and 50 magazines. Updates have been added to reflect the latest part number information.

FUEL INJECTORS FOR 2003 AND NEWER HPCR ENGINES Download PDF (5mb)
An all-encompassing article on fuel injectors in Ram Cummins trucks that use the HPCR fuel system. Quidam 3 15 serial cables. From 'Principles of Operation' to 'Injector Removal and Replacement'.

FUEL FILTERS FOR YOUR '03-NEWER TRUCK - TDR ISSUE 77Download PDF (2.5mb)
What can you do about getting better fuel filtration for your '03-newer Turbo Diesel truck? Let's take a look.

WHAT TO DO ABOUT THE FUEL TRANSFER PUMP ON YOUR '03-NEWER TRUCK - TDR ISSUE 76Download PDF (3mb)
Installing a parallel fuel transfer pump on a 2010 Dodge Turbo Diesel truck. A FASS pump becomes the primary pump, the in-tank fuel pump serves as the spare. Was it worth it? Read and find out.

'89-'09 FUEL PRESSURE GAUGE INSTALLATION TIPS Download PDF (1mb)
We offer some tips on how to easily tap into the fuel system for gauge installation.

'89-'98 FUEL TRANSFER PUMP INSTALLATION TIPS Download PDF (1mb)
Just a couple of helpful tips for installing the plunger-type fuel transfer pump in '89-'98 Dodge Turbo Diesel trucks.

HOW TO DIAGNOSE VP44 FUEL SYSTEM ISSUES - by BLUE CHIP DIESEL Go to VP44 Article
We know that there are many good vendors that are specialized in a particular component or part. When it comes to the VP44 fuel injection pump that is used on '98.5-'02 Dodge Cummins Turbo Diesel truck, there is none better than Blue Chip Diesel of East Derry, New Hampshire. If you think you are having trouble with the VP44 in your truck, you need to read the entire article we've linked to. This article gets updated frequently, so check back.

ENGINE

UNDERSTANDING AIR INTAKE SYSTEMS (PART I - AIR DENSITY) - TDR ISSUE 56 Download PDF (2mb)
This two part article will help to explain how an air intake system works using engineering principals and dynamometer test data. Part 1 will discuss airflow and show the effects different intake components have on engine power. Part 2 will discuss air density and show the effects air density has on engine power.

UNDERSTANDING AIR INTAKE SYSTEMS (PART II - AIR DENSITY) - TDR ISSUE 59 Download PDF (1mb)
As you will see in this article, when you test a truck under real-world conditions, power improvements from most aftermarket intakes will diminish due to the effects of heat under the hood.

AIR FILTERS..ONE MORE TIME - TDR ISSUE 80Download PDF (2.5MB)
Paper versus gauze air filters and dust out conditions.

TIME TO INSPECT THE HARMONIC DAMPER- TDR ISSUE 73 Download PDF (7mb)
If you never paid much attention to this black doughnut and did not realize that it required any sort of inspection or maintenance, it does in fact deserve our attention. Learn about this important piece of our Mighty Cummins Diesel engine.

KILLER DOWEL PIN - TDR ISSUE 57 Download PDF (2mb)
The dowel pin has been (starting with production in 1983), and continues to be, used on the Cummins B-series engine as a locating and alignment point for the attachment of the front gear cover to the engine block. The problem that has been encountered by owners is predominately with the ’94-’98 12V engines.

DEBUNKING LUBE OIL MYTHS (PART 1) - TDR ISSUE 55 Download PDF (3mb)
In this article, the TDR will initiate readers into the mysteries of the lube oil industry and, along the way, debunk a few lube oil myths.

ANALYSIS OF LUBE OIL (PART 2) - TDR ISSUE 57 Download PDF (1mb)
Following up on the TDR 55 article, 'Debunking Lube Oil Myths,' we test more engine oils and provide the results.

LUBE OILS-VERSION 2012 - TDR ISSUE 76 Download PDF (2.5mb)
How are lube oils different in 2012 and why.

OIL FILTER EVALUATION - TDR ISSUE 71 Download PDF (2mb)
There are some things you should know about oil filtration and oil filters.

ANTIFREEZE FOR YOUR TRUCK - TDR ISSUE 62 Download PDF (2mb)
With the wide choice of antifreeze products at the auto parts store, it puzzles the mind. Which one is correct for your Dodge Turbo Diesel truck?

DRIVETRAIN

'94-'04 LOCK/UNLOCK OF THE AUTOMATIC TRANSMISSION - TDR BUYER'S GUIDE Download PDF (2.5mb)
How do you stop the automatic transmission from unlocking when the truck is in overdrive or third gear? A collection of related articles about this common problem from over the years.

CHANGE THE AUTOMATIC TRANSMISSION FLUID - TDR ISSUE 64 Download PDF (3mb)
Learn how to get a complete fluid change in this article.

STEERING, SUSPENSION AND BRAKES

2nd GENERATION HANDLING AND SUSPENSION PROBLEMS - TDR ISSUE 53 Download PDF (3mb)
Most of you are familiar with the death wobble, but it bears mentioning again. It is violent caster shimmy where the tire and axle shake after striking a pothole, un-even road surface or bump.

STEERING WOES - TDR ISSUE 74 Download PDF (4.5mb)
Get started in the right direction of correcting steering woes rather than replacing parts that may or may not help.

SHOCK ABSORBER REPLACEMENT/BILSTEIN SHOCKS - TDR ISSUE 75 Download PDF (3mb)
If you're going to replace the shocks in your Dodge Ram yourself, get this article to see how it's done. Pirateproxy lat.

BRAKE PAD SPOTTERS GUIDE - TDR ISSUE 51 Download PDF (3mb)
In order to help you out in the hunt for the right brake pad, here is a brief brake pad “spotter’s guide” which describes different brake pad types, their characteristics, and key features.

BRAKE UTOPIA - TDR ISSUE 50 Download PDF (4mb)
Quite simply brake vibrations are never a good thing. In fact, a common saying in the brake industry is, “The best brake system is an invisible brake system.” Let’s try to understand why this can sometimes be difficult to achieve.

RPM Diesel Company has a Bosch Diesel Service that covers many different Bosch Diesel Products. From Bosch Diesel Injectors to Bosch Diesel Injection Pump Parts we have the Bosch Diesel Products and services to keep your diesel engines running in optimal conditions. Reliability, affordability, and efficiency are hallmarks of Bosch Diesel. Our professional diesel engine mechanics will perform an immediate diagnosis and then fix, repair or maintenance your Bosch diesel injection system.

When you have issues with your Bosch Diesel Common Rail and need maintenance or parts for your Bosch Diesel Injection Pump Parts – call the experts at RPM Diesel Engine Company. We have the diesel engine pros who will properly diagnose and plan a repair if necessary or perhaps you require only routine Bosch diesel engine maintenance. We handle request of all sizes from individual to fleet size – save your valuable time and monies with proven Bosch diesel engine experts.

RPM Diesel Company has new and remanufactured Bosch Diesel Parts.

• Bosch Glow Plugs
• Genuine Bosch OE Injectors
• Bosch Common Rail Injectors
• Bosch Nozzles
• Bosch High Pressure Pumps
• Bosch Diesel Injection Pump Parts

Feasibility is crucial when choosing from a long list of Bosch Diesel Products. We can properly diagnose your Bosch diesel products and get you back on the road swiftly. Our innovative techniques are proven and done in our state of the art testing facility with the latest methods for common rail technologies. Let our technical Bosch diesel engine experts provide you with a reliable and affordable solution for your diesel engine.

• Fuel pumps
• Fuel pump assemblies
• High pressure pump
• Common rail tests
• Common rail rebuild
• Conventional diesel rebuild

Traditional diesel injection pumps should periodically undergo a Bosch Diesel Service.

Bosch Diesel Engine Service

Diagnose diesel-injection systems for weakness or fail points
Perform Bosch Diesel Engine maintenance according to the manufacturer specs
Component Services

We can fix or diagnose:
Bosch Diesel In-line pumps (Bosch Diesel Pump A, Bosch Diesel Pump P3, Bosch Diesel Pump P7100, Bosch Diesel Pump P8500 M, Bosch Diesel Pump MW, Bosch Diesel Pump VA and Bosch Diesel Pump VE style pumps)

Governor (RS, RSV, RQ,RQV, RE)
Traditional Bosch Diesel Injectors (Bosch Non Unit Injector and Bosch Non-Common Rail)
General Test and analyze state of warranty plus rebuilds of Bosch common rail diesel system injectors.

If you have any questions about Bosch Diesel Injection Pump Parts call RPM Diesel Company today. 800-660-6304

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