Bosch VP44 Diesel Injection Pump Updates from Jasper Engines & Transmissions

Bosch VP44 Diesel Injection Pump Updates from Jasper Engines & Transmissions

Jasper Engines & Transmissions offers several benefits when it comes to remanufacturing the Bosch VP44 injection pump. This pump was found on 1998 - 2002 Cummins B Series engines, which were used in Dodge Ram pickups, Freightliner medium-duty trucks and numerous industrial applications. The design was prone to failure for many reasons.

Jasper Engines & Transmissions offers several benefits when it comes to remanufacturing the Bosch VP44 injection pump.

This pump was found on 1998 – 2002 Cummins B Series engines, which were used in Dodge Ram pickups, Freightliner medium-duty trucks and numerous industrial applications.  The design was prone to failure for many reasons.

In the early-style pump housing, there was a steel piston which ran through a brass advance cylinder bore.  “The brass bore saw severe wear due from the use of ultra low-sulfur fuel and the different metallurgical factors of the two pieces,” says TJ Abrams, JASPER Diesel Quality Group Leader. “JASPER only uses steel inserts in this advance cylinder bore to eliminate wear and allow the piston to move freely.”

Another common issue involved the electronic pressure sensor glowplug controller (PSG) on top of the pump.  “Early-model PSG’s had a limited number of key cycles,” noted Abrams.  “So JASPER verifies the date code on the side of the PSG to eliminate this concern and will reflash the PSG to the latest calibrations.”

Perhaps the most common failure on the VP44 is the “216” code (fuel timing error) and the runability problems that go with it due to supply pump issues and low fuel pressure to the injection pump.  “The pump diaphragm can crack inside the pump, causing excessive wear on the housing,” says Abrams.  “JASPER installs the later-style diaphragm, which is metal-plated and is thicker than the original, to help eliminate these types of failures.”  Abrams added, “On each VP44 replacement, JASPER recommends that the fuel supply pump is also replaced in the vehicle to help eliminate that failure.”

As an authorized Bosch Service Dealer, JASPER uses state-of-the-art calibration equipment.  The Bosch 815 test stand, used in our fuel room, is constantly updated with the latest software,” says Abrams.

These updated components, along with JASPER’s up-to-date electronic calibrations, will help keep a vehicle running at peak performance, and meeting the latest emission standards.

For more information on JASPER’s diesel engine fuel system components, please call our sales team at (800) 827-7455, or log onto: www.jasperengines.com.

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