Huckstorf Diesel Pump & Injector Service is your one stop shop for all your diesel repairs, maintenance, and upgrades! Please contact us if you have questions or would like suggestions.

Diesel Performance Product Guide & Store

There are many diesel performance parts and products out there. Which one is right for you? Huckstorf Diesel has spent lots of time doing the research and testing many products so you don't have to. From diesel performance chips, to tuners, to modules, to intake systems, and exhaust systems we know what works and we will be happy to sort out your options. We took the time to break it down for you into sections and give you options and suggestions in each of those sections. In the Performance area there are truck specific products that make the power. The Exhaust area has complete systems or individual parts so you can build your own custom exhaust or stack kit. We offer a wide variety of Gauges & Holders to monitor what is going on with your truck. The Air Intake System section is also broken down by truck brand so you can easily find the right one. In the Turbocharger section you will find stock replacements and performance upgrades for the serious tower and the high performance crowd.  With big power you need a reliable and capable Fuel Supply. In the Engine Parts area you will find the commonly replaced items that you are looking for.  And of course, every diesel engine needs quality fuel.  In the Additives area you will find the best products available to treat your fuel to keep your engine happy!

Please look around and Contact Us if you have any questions, comments, or suggestions.  Thank you!

Chevrolet / GMC 6.5L PMD Cooler

 

The PMD story, and why you need a cooler.
The PMD (pump mounted driver) or also known as a FSD (fuel system driver), has been a major problem for Chevy / GMC 6.5L diesel owners since its introduction on the 1994 6.5L electronically controlled DS4 fuel injection pump. The PMD is a solenoid pack that builds up heat and uses the injection pump and the fuel running through it to absorb that heat. The injection pump is in the valley of the engine between the cylinder heads and the heat produced by the engine is also absorbed into the injection pump. In some situations the fuel going through the pump cannot adequately remove the heat to keep the PMD functional. Once the engine begins showing symptoms of stalling, hesitating, most likely the PMD is failing and the problems will only get worse.

Tests show that when using the PMD Cooler, PMD temperatures will drop anywhere from 32° to 81° Fahrenheit depending on driving conditions. These temperature drops will seriously increase the life of the PMD and can save you money from towing and costly repairs. The PMD Cooler easily mounts to the intake manifold of your engine within reach of the wiring harness plug for the PMD. Installation is quick, simple and does not require any modifications or special tools. Purchase a new PMD and instead of installing it back onto the pump where the heat is, use a PMD Cooler and move the PMD out of that heat zone.  The savings in the labor time it takes to mount a new PMD onto the injection pump will more than pay for the cost of the PMD Cooler, plus the PMD will last much longer!  The PMD Cooler kit comes with everything needed to mount a PMD to the intake manifold. Don't pay for a pump replacement when the PMD may be all you need!

Be sure to look closely at other so called "coolers" out there.  Many do not have the cooling capacity that ours does and are little more than remote mounting brackets that only relocate the PMD away from the engine heat, but do nothing to deal with the heat made by the PMD.

New upgraded Pump Mounted Drivers

There is good news for GM 6.5L engine owners!  Technology has advanced in the PMD area and there are now choices for replacement Pump Mounted Drivers.

Stanadyne is the maker of the injection pump and has come out with an updated version of the PMD.  Stanadyne has termed their new DS Pump Mounted Driver as "Bullet-Proof ", since they incorporated a series of new features for added durability and reliability.

Stanadyne PMD Kit Number 35976, includes new PMD, wiring harness, heat transfer pad, and four mounting screws.

Buy a New Stanadyne PMD Now!

DTech is an aftermarket diesel product company.  They hired Flight Systems Electronics Group to manufacture a Pump Mounted Driver (PMD) that would handle the high temperature environment that was causing problems with the existing drivers.  FSEG has earned outstanding supplier awards from NASA, automotive manufactures, and original equipment manufactures.  Exacting standards have been a hallmark of FSEG for more than 30 years.  What they created was an outstanding product that holds up great!  The DTech unit is a direct bolt in replacement for the original.  DTech PMD's have a one year 50,000 mile warranty.

Buy a New DTech PMD Now! 

Calibration Resistors

The injection pump fuel delivery is fine tuned with a resistor in the PMD. The resistors range in number from one to nine. The number nine will deliver the highest fuel delivery. If no resistor is used, the pump will default to the number five. We recommend using the number nine resistor to give you that little extra performance.

Note:  Stanadyne changed the connector between the wiring harness and the PMD when they updated their PMD.  Use this resistor with the new grey colored Stanadyne PMD's.

Buy a Grey PMD #9 Resistor Now!

Note:  Stanadyne changed the connector between the wiring harness and the PMD when they updated their PMD.  Use this resistor with the old style Stanadyne or DTech black colored PMD's.

This harness extends the factory wiring harness between the injection pump and a remote mounted pump mounted driver 40 or 72 inches.  If your injection pump wiring is too short due to the way it is routed through the injection lines, or you choose to remote mount the cooler in another place besides the intake manifold, these harness' will allow you to do that.  The original style ends PMD plug ends are used.  These can be used with the newer gray style Stanadyne PMD with slight trimming on the PMD plug end.

Mark,

Thank you for your help, it was much appreciated. I have received the new pmd and it seems to be working fine. It gets frustrating for this is pmd number 8 in less than 2 years. But your business was a breathe of fresh air, more helpful than Stanadyne. Thank you again, and from here on out Huckstorf Diesel is my business to go to! Thank you and have a god day.

Sincerely,

Jonathan Lamb

 

Recieved a FSD and heatsink from you Friday. Thanks for pre-installing the resistor, the super fast shipment, and the quality of your product. A+ Worked great!

Fred Goins

Click on the "Buy" button to add that product to the shopping cart, or you can click on the picture for further product information.  The Check Out link will appear on the top left side of the page after you add something to your cart.  You can always give us a call at 800-776-7102 during business hours for personal assistance.  Thank you!