Symptoms of a Failing Fuel Pump. "De-computerize your Dodge". with 6 speed manual. If you are having problems with your 24v Cummins, most likely it has to do with your old injection pump. Troubleshooting Symptoms Troubleshooting Procedures and Techniques Troubleshooting Symptoms Charts. Dodge Ram 98-04 Diesel Cummins Fass Fuel System 150 GPH-FASS Titanium Series Fuel Systems High Performance Fuel PumpWater and Air SeparatorsNote: This system hooks directly to your injector pump VP44 & CP31998. When the body is cracked, the engine will not necessarily produce a miss but will cause other problems, which can be even more difficult to pinpoint. I was told that the failure is partly due to inadequate lift pump pressure. The VP44 is a sensitive pump, and does suffer from rotor seizures, so lubrication is important. Glad you got it fixed, I had a good idea it was hyd. Check the "Possible Causes" listed above. Fuel delivery problems could be: A plugged diesel fuel filter. The lack or decrease in fuel pressure supplied to the injection pump is one of the most common reasons for injection pump failure. The vp itself needs a minimum of 15psi of fuel pressure to stay working. This a very common problem. You can get a failed solder in the EDU (not the engine ECU on the top of the engine but another computer down the back, next to the fuel pump) that can cause fuel flow problems. Hi there, If you have fuel delivery to the pump, I would be cracking an injector line and seeing if you have injection pulse, (keep hands well away from any high pressure fuel) if no injection delivery, the pump will be the problem, do the scan and see if that helps with a code. 5 diesel pump driver module,duramax injector problems,7 3 glow plug relay problems,6. 9L 24V VP44 Pump (245 Hp) Cummins Injection Pump Removal Tool 1989-2018. Incorrect fuel injection pump timing leads to reduced performance of the engine and can cause engine misfiring or other less obvious symptoms. Without the coating the piston will quickly seize in the pump housing, this causes: Blue/white smoke, poor power, rough running, engine shutdown and non starting. Each VP44 fuel pump has a separate computer connected to two internal sensors. Perhaps it would have gone in the first place once new pump fitted, maybe i should have persevered with getting it going but kept throwing up randon fault codes when it did want to talk to network. The Dodge 5. it has now power and i replaced fuel delivery pump. it is best to run a fuel pressure gauge. Trouble code P0216. Check / Replace Fuel Return Overflow Valve The Bosch VP44 Injection Pump Overflow Valve is located on the side of the injection pump. We follow the guys over at Siskiyou Diesel Performance as they show us how to replace a problematic VP44 injection pump from a '98-02 Dodge Ram Diesel. This a very common problem. 5-02 Cummins 24V 5. At Autotronics we can repair Bosch VP44 and VP30 diesel pump EDCs at a fraction of dealership's prices, as they will surely suggest you replace the whole diesel pump unit. when i get home i am going to pressurize the intake system and see if i might have a leak somewhere. 5-02 24 valve 5. engine gear driven fan. Failure among VP44s is quite common. Loss of Power on PowerStroke. Prolonged fuel delivery problems can cause injection pump failure! Symptoms. 1 shows the VP44 pump. It is also used to connect the fuel return line (banjo fitting) to the fuel injection pump. This can result in a flat battery upon return to the vehicle as well as the melting of the plastic indicator housing/lens. Puck problems in an '01 Dodge. FASS diesel fuel systems are the preferred fuel air separation systems among discerning drivers worldwide. Vehicle: Nissan Patrol 3. engine gear driven fan. What is the VP44 and how does it work? The VP44 fuel pump is an electronically controlled rotary fuel injection pump; the pump controls the injection quantity & timing of the fuel injection. Common-Rail Injector Failure The Problem. It is on the frame rail below the drivers. This vp44 bosch fuel pump has inside a small ecu and speed sensor which can adjust timing if the needle sensor is faulty. 4 duratorq fuel pump timing solenoid Posted By dbm Thursday, March 06, 2014 5:17:48 PM. The VP44 Injection Pump is self timing and can operate independently from the Crank Shaft Positioning Sensor (CKP). The accelerator position sensor sends a signal to the electronic control module (ECM) when the driver pushes on the accelerator pedal. if it goes less then 10 psi it starves and will ruin the VP44 injection pump. I replaced the VP44 and the lift pump. Topics in the Cummins ISB, QSB 5. First and foremost you have to understand that there is no easy or ACCURATE way to diagnose most VP44 injection pump problems by using only a scan tool. More instructions and other code. If you are running elevated line pressure, the HP version of this solenoid is a better option. The first Ram Cummins was released for the 1989 model year, technically before the D/W pickups were even called the Ram. Fault code P1689(no communication between VP44 and ECM) is a common problem when this harness goes bad. There were bubbles in the fuel line but replace supply with tempory supply, this proved the supply was ok. These are the two major causes for VP44 pump failure. 5 to 2002 5. The VP44 injection pumps come with a 1yr unlimited mileage warranty. What and why is a mystery to this date. it is best to run a fuel pressure gauge. P0300, P0301, P0302, P0303, P0304, P0305. I'm not sure if it was a dead cut or if it failed after slight changes in noise/power, but it was a full recovery job. The Nissan parts and accessories you need are for sale online at Auto Parts Warehouse. 9-ME CM850 Marine C Gas Plus Natural Gas Automotive QSK45/QSK60/QSK78 G-Drive Control System Electric Fuel Control Governor INSITE (4 CD-ROMs) Fuel Pump PT (Type R) Rebuild and Calibration Instructions Publications and Subscription Program. 9L 24V VP44 Pump (245 Hp) Cummins Injection Pump Removal Tool 1989-2018. Repairing your pump yourself is a great way to save money; however, extra care must be used as serious pump and/or engine damage can occur. Basically this means the diesel fuel injection pump has a timing failure. 9L Cummins 24V ISB VP44 Part # 1467445003 (2) 14mm sealing washers (Part# 3918192) are not included - if needed, please add them from the options to the right. The most common problem related to the injection pump is the Overflow valve, located at the return line connection. Curious about the claim, Roger Blind and Bill Alsip both e-mailed Cummins for a response. 5-02 Dodge Cummins 24V engineand now the experts at BD Diesel Performance have used their 36 years of diesel fuel system experience to bring you the ultimate high performance VP44. One of the major problem is BOSCH VP30 VP44 injection pump. The open end of the piston will clear the fuel pump inlet gallery. I am sure these NLS injectors fail at 100k and 120k miles based on all the internet research I have done. This BOSCH fuel overflow valve kit comes with the fuel overflow valve and two sealing gaskets. The fuel supply pump should maintain at least 4psi at the inlet to the injection pump on a W. We offer a replacement pump to get your truck to running like new. Another frequent VP44 failure is when the truck dies driving down the road for no apparent reason, or when you let off the throttle at high RPM, and the engine won’t restart. Buy and sell almost anything on Gumtree classifieds. Locate the 2 bleed screws on the injector pump. Eventually you will have trouble with the emissions equipment, but likely not until or after the 100k mile mark. I succesfully repaired about 12-14 pieces of vp44 and i did alot of pictures with explinations and parts you need it to repair this pumps. You can replace one injector at a time, but at 6 hours of labor for the swap, you might as well replace the set. If there is clear evidence of metal transfer on pump shaft OD or in drive gear ID, injection pump and drive gear MUST BE replaced. 9L (Auto Trans or 5-Speed Manual). 9L VP-44 Tech Talk. 9 Cummins Diesel. Injector Pump: A. Symptoms of a BAD Fuel Injector. 9L Cummins 24V is a workhorse of a pump, but they are prone to a few problems. just adjustd valves to i. Engines that use these pumps also use mechanical injectors which control injection pressure (400bar approx. Failure to maintain a pressurized flow of un-aerated fuel will cause injection pump damage. 10 second cranking cycles and got engine started. This can be associated with a head gasket failure. The lift pump is expected to not only pump enough fuel to feed your injectors but enough excess to provide cooling action to this pump. BD DIESEL 1052913 High Power Injection Pump P7100 400hp 3200rpm-Dodge 1996-1998 5spd Manual. It may feel as though the car simply doesn't accelerate as it should, and jerks or hesitates as it picks up speed. Lift pumps are relatively inexpensive, but when they fail on a 24-valve Cummins, it often takes out the VP44 injection pump at the same time. The supply pump should maintain at least 4psi at the inlet to the injection pump on a W. How Electronic Fuel Injection Works. The pump itself creates considerable heat, and after enough heat cycles, the wires and connectors become brittle, split, crack and fail. The weak pump will starve the engine for fuel, causing it to misfire and lose power. 9L Cummins 24V 245HP (028) pump. Browse all available Dodge Cummins injector pumps online now. The piston on the right is a new one and the black coating is complete. On the spring side, fuel pump inlet pressure pushes it and the chamber side, the fuel pressure inside the pump housing pushes it the other way. In extreme cases, or if the problem is neglected, piston detonation will occur. Worn glow plugs cause a number of problems Glow plugs are wearing parts and need to be checked regularly, normally around every 80,000 – 100,000 km to ensure they function perfectly. Engine and System Identification Engine Identification Engine Diagrams. Dirty fuel filters can also cause these symptoms, so it is recommended to check both parts before making any repairs. Its cheap for a reason! Some early VP44 pumps are known to fail due machining errors in the axle rota head, a few of these wreck the alloy pump body, rendering the pump unserviceable. This is a Remanufactured Bosch fuel pressure regulators for common rail fuel injection pumps. The accelerator position circuit contains three wires: a +5-VDC SUPPLY wire (pin 29), a RETURN ground (pin 19), and a SIGNAL wire (pin 30). If the engine turns over too slowly, the pump cannot generate enough fuel pressure to activate start of injection causing hard starting problems. Make sure that the fuel supply is adequate and that there is no air in the system. Puck problems in an '01 Dodge. Injector Pump Overflow Valve Diagnosis See TSB 14-07-96 for additioanl fuel pressure and overflow valve tests. In addition to installing a better fuel supply system, we would highly recommend installing a fuel pressure gauge in the cab. 9-44 and QSB 5. With the engine off put your truck in drive and turn the key to start, you should hear the lift pump run. Not only does it control your engine, but it also protects it as well. If the electric fuel transfer pump fails (a less than $180 part) the Bosch VP44 electronic fuel injection pump (an expensive $1200 + labor part) that is downstream of the fuel transfer pump will, in short order, fail. it ran like a top, started right up when it was cold and then it froze up last winter, got it thawed out, drained the fuel, put new fuel in and changed the filter, would not start, got to start on ether. The accelerator position circuit contains three wires: a +5-VDC SUPPLY wire (pin 29), a RETURN ground (pin 19), and a SIGNAL wire (pin 30). 5-02 Dodge Cummins 24V engineand now the experts at BD Diesel Performance have used their 36 years of diesel fuel system experience to bring you the ultimate high performance VP44. 9999 CUMMINS CUMMINS Recalls (11) Campaign: 75E033000 on 10/11/1979 Component: Engine and engine cooling:cooling system:fan Affected: 531 Notes: Kt450 and kta600 engines. This kit will allow you to complete dissassemble and reassemble your VP44 which could save you hundreds in repair cost. Some of the problems mentioned above could also be symptoms of other problems that may not be attributable to the fuel injection equipment. Failure to replace feed pump along with the Injection Pump may result in non-warranted damage. I now understand that within the VP44 is a nother feed pump which sucks the fuel in and boosts the pressure up for the high pressure pump to send off to the nozzles. Stranded 2002 Tddi Please Help New Owner. Find FASS Fuel Systems HD Series Replacement Pumps RPHD-1004 and get Free Shipping on Orders Over $99 at Summit Racing! FASS Fuel Systems HD Series replacement pumps will help restore your fuel/air separation system to optimum performance levels. Perhaps it would have gone in the first place once new pump fitted, maybe i should have persevered with getting it going but kept throwing up randon fault codes when it did want to talk to network. A code P1684 shows that the memory has been cleared recently and is not necessarily a problem. Usually means its failed. This caused problems like fouled spark plugs and plugged mufflers. Buy now and receive excellent customer service and fast shipping, we will settle for nothing less than the. VP44 To P7100 "P Pump" Conversion Kit (1998. never had any power, I've replaced the injectors no change, had the injection pump rebuilt put it back on still would not run right. VW TDi PD High mileage vehicles. These are the two major causes for VP44 pump failure. Talk to someone with a lot of diesel experience, such as an authorized fuel injection repair shop, to get ideas of what to look for. Without the coating the piston will quickly seize in the pump housing, this causes: Blue/white smoke, poor power, rough running, engine shutdown and non starting. When the inside ousing pressure is high, the timing is at maximum advance. I am asking for a D-max guy to help me understand how the CP3 fuel pump works in their application without the use of a lift or pusher pump. Complete Injection Pumps. Other upgrades included an overhead valve rocker system (150,000 miles without adjustment), a redesigned piston for increased power and efficiency, reduced noise, and cleaner operation. Common Symptoms of Fuel Injection Equipment Problems. Other upgrades included an overhead valve rocker system (150,000 miles without adjustment), a redesigned piston for increased power and efficiency, reduced noise, and cleaner operation. injector/s, many times the fault lies with the wiring harness. Failure to maintain a pressurized flow of un-aerated fuel will cause injection pump damage. I'm not sure exactly what that means but given the amount of people that have problems with the lift pump, and given the fuel starved symtoms of the truck, I would have to reason that it's on its way out. Shut the engine off when it is fully warm. Unfortunately when the lift pump fails, the injection pump will continue to draw fuel through the lift pump under vacuum. The VP44 is a sensitive pump, and does suffer from rotor seizures, so lubrication is important. All VAG TDi pre-PD suffer problems with drastic power loss, causes: injection pump internal collapse or air flow meter fault. The Diesel injection pump produces the high fuel pressure required by Diesel fuel injectors. The fuel supply pump should maintain at least 4psi at the inlet to the injection pump on a W. dont know what else to check hope you can help. Fuel pressure is the problem…crappy electronic lift pumps fail without warning and starve the expensive, fragile VP44 injection pump. Another frequent VP44 failure is when the truck dies driving down the road for no apparent reason, or when you let off the throttle at high RPM, and the engine won’t restart. Fuel Lift Pump 1998 - 2002 Dodge / Cummins 5. The vp itself needs a minimum of 15psi of fuel pressure to stay working. Failure to follow guide voids warranty. Fuel injection problems in your Dodge diesel truck can present themselves in a wide array of symptoms, none of which makes for a pleasant driving experience. once you see fuel comeing out tighten the connector. CarComplaints. The pump itself creates considerable heat, and after enough heat cycles, the wires and connectors become brittle, split, crack and fail. P1693 code is a companion code for the injection pump. Failure to do so can lead to non-warrantable damage to. The solder joints become crystallised on the circuit board from excessive heat cycles. Make sure that the fuel supply is adequate and that there is no air in the system. 9 Cummins engine is critical. The IPR (injection pressure regulator) is located on the high pressure oil pump at the front of the engine's valley. P0252 is an OBD-II generic code for the injection pump fuel metering control valve circuit when the engine control module (ECM) did not receive a signal from the valve indicating movement. If you unsure or just want some free advice on your pump you can reach them at (866) 737-4966. You have to do some detailed tests with DIS. We offer stock remanufactured pumps, 235HP SO (standard output) pumps, and 245 horsepower HO (High Output) pumps from BD, Industrial Injection, Area Diesel, Scheid Diesel, and Bosch. 9 Cummins Diesel. The 1992-1993 model years used a 6. Connector,VP44 Injection Pump. When you turn the key to run (and start) the FSO is sent 12v switched power from the main harness via the key switch, which allows the injection pump to send fuel to the injectors. Therefore, bleeding the injection lines at the injectors is the BEST way to save wear and tear on the injection pump and injector parts. 00550 - Start of Injection Regulation 00550 - Start of Injection Regulation: Control Difference Possible Symptoms. There was TDI near here with these symptoms and that valve was the cause (according to the driver). I also had a small leak between the vacuum pump and steering pump. However, with a new VP44 injection pump, you can get back on the road and regain your peace of mind. Eventually you will have trouble with the emissions equipment, but likely not until or after the 100k mile mark. Cause maybe pump unit failure, due to corrupted internal seal (not an expensive repair). We have a 2005 Dodge Ram 3500 Cummins 5. The supply pump is critical for the longevity of the VP44 injection pump. LOL They all have their problems. If you unsure or just want some free advice on your pump you can reach them at (866) 737-4966. VP44 Injection Pumps - 98. Malfunction Indicator Light (MIL) ON. Pumped air injection systems use a vane pump called the air pump, AIR pump, or colloquially "smog pump" turned by the engine via High-pressure cut-off switch (85 words) [view diff] exact match in snippet view article find links to article. 9-ME CM850 Marine C Gas Plus Natural Gas Automotive QSK45/QSK60/QSK78 G-Drive Control System Electric Fuel Control Governor INSITE (4 CD-ROMs) Fuel Pump PT (Type R) Rebuild and Calibration Instructions Publications and Subscription Program. The Factory Replacement Raptor ® Pump is a direct replacement for VP44 Dodge pick-up trucks (1998. If this failure has occured with your pump you could be experiencing loss of power or high fuel consumption with your vehicle. Malfunction Indicator Light (MIL) ON. One of the major problem is BOSCH VP30 VP44 injection pump. it doesnt make any difference. 4) The shop where I bought my VP44 & LP had another ’99 in for VP44 replacement that would not start unless you disconnected the LP pigtail from the wiring. Usually the VP will have hard starts when its warm and blow lots of white smoke. - PRNDL display may not show up or flash. 9l 5spd/auto 027SE VP44 Injection Pump is for your 1998. The pump itself creates considerable heat, and after enough heat cycles, the wires and connectors become brittle, split, crack and fail. when priming the fuel filter it makes it easier if you take a screwdriver and open the schrader valve till fuel comes out. This is usually a seized rotor in the Injection Pump and is most common on 1998 and 1999 trucks, or rebuilt pumps that don’t have the upgraded rotor and distributor. The timing is dynamic within the pump. It's not like it has a complex gear-train which can wear and lose advance. Any one of several different parts can malfunction and lead to fuel pump problems. Fuel injection problems, therefore, are one of the most pressing engine issues to deal with. I also had a small leak between the vacuum pump and steering pump. This way you can detect a fuel supply issue before it has a chance to take out the pricey VP44 pump. If a problem with the fuel pump occurs, it can directly affect your injector pump. The symptoms are: >the engine stops and don't start >eraticle idling >sometime don't start Well i have the solutions for thi problem. 9L Cummins 24V ISB VP44 Part # 1467445003 (2) 14mm sealing washers (Part# 3918192) are not included - if needed, please add them from the options to the right. Here are some common symptoms of a bad or failing throttle position sensor to watch for: 1. If the engine turns over too slowly, the pump cannot generate enough fuel pressure to activate start of injection causing hard starting problems. Troubleshooting guide for diesel fuel injection systems with Bosch inline fuel injection pumps Tank empty or tank vent blocked Fill tank/bleed system, check tank vent. The car is running fine now but for how long?. Every VP I have seen that has gone out the hard starts were when hot. They would all start reasonably well when cold. At Autotronics we can repair Bosch VP44 and VP30 diesel pump EDCs at a fraction of dealership's prices, as they will surely suggest you replace the whole diesel pump unit. How Electronic Fuel Injection Works. Pure Diesel Power offers a large line of Bosch VP44 Fuel Injection pumps for the 98. First and foremost you have to understand that there is no easy or ACCURATE way to diagnose most VP44 injection pump problems by using only a scan tool. The timing solanoid is under the pump. I am asking for a D-max guy to help me understand how the CP3 fuel pump works in their application without the use of a lift or pusher pump. Failure to maintain a pressurized flow of un-aerated fuel will cause injection pump damage. Any one of several different parts can malfunction and lead to fuel pump problems. Re-assembly of the pump components must be. Injector Pump: A. Pure Diesel Power offers a large line of Bosch VP44 Fuel Injection pumps for the 98. Unlike past injection systems like the VP44 and P7100 injection pumps, these injectors fire multiple times for every engine cycle. How Electronic Fuel Injection Works. Symptoms of a Failing Fuel Pump. There was TDI near here with these symptoms and that valve was the cause (according to the driver). last updated 23/08/2019. Step 2 - Install the Luminosity Probe. We recommend checking the fuel supply pump pressure periodically and or. it gets sucked up by an electric fuel pump. Choose Options. The IPR (injection pressure regulator) is located on the high pressure oil pump at the front of the engine's valley. 1 shows the VP44 pump. 9 Cummins engine is critical. VP44 is a rotary style medium high pressure injection pump that is mostly mechanical with two electronically controlled components in it - the fuel metering solenoid and the timing advance solenoid. If this failure has occured with your pump you could be experiencing loss of power or high fuel consumption with your vehicle. The fuel injection pump pressurizes fuel into a delivery tube. 5 diesel pump driver module,duramax injector problems,7 3 glow plug relay problems,6. VP44 is a rotary style medium high pressure injection pump that is mostly mechanical with two electronically controlled components in it – the fuel metering solenoid and the timing advance solenoid. I will make a third vote for air. Since then, Bosch has stood at the forefront of fuel system technology, providing fuel pumps to virtually all vehicle manufacturers. One of the major problem is BOSCH VP30 VP44 injection pump. This should facilitate the diagnosis of any problems. We offer best in class customer service and advice for your diesel performance needs. u down on the vp44 pumps if the fuel pressure is below 5 ur screwed also you mave have done damage to your injection pump. Rough Idle. The Nissan parts and accessories you need are for sale online at Auto Parts Warehouse. Hoodia Gordonii Plus diet pills is cutting-edge, advanced appetite suppressant, metabolism booster, fat burner and energy enhance. Read Fuel Injection books like Automotive Equipment Usage and Repair Strategies and Diesel Common Rail Injection Electronic Components Explained for free with a free 30-day trial. The most frequent cause of this code is a bad injection pump due to poor fuel delivery. The supply pump is critical for the longevity of the VP44 injection pump. it ran like a top, started right up when it was cold and then it froze up last winter, got it thawed out, drained the fuel, put new fuel in and changed the filter, would not start, got to start on ether. The timing advance solenoid is pulse width. If there are no codes, “Done” will appear. 5-2002 Dodge. 9l 5spd/auto 027SE VP44 Injection Pump is for your 1998. Description: 2000-2002 24V Dodge 5. Fuel Lift Pump 1998 - 2002 Dodge / Cummins 5. If you just put the raptor on but ran that pump with the failing fuel pump, 9 times outta 10 your vp is toasted. The most common problem related to the injection pump is the Overflow valve, located at the return line connection. How do turn up fuel pump on 01 dodge cummins? It requires a "tuner" or "hot box" to reprogram the computer on a 24 valve Cummins. Cummins Vp44 injection pump failures Weak trannys just to name a few of many. This all led me the to well know VP30 failure, but I hesitated because the ECU has already been swapped out and eventhough it's an old one it worked fine until the end. The most important thing for then is well filtered fuel. 0L with ZD30 direct injection engine. VP44 Injection Pump. The pump itself creates considerable heat, and after enough heat cycles, the wires and connectors become brittle, split, crack and fail. Glad you got it fixed, I had a good idea it was hyd. 9L VP-44 Tech Talk. It is capable of pumping 150 gph and supplies 15 psi to the injector pump. Vehicle: Nissan Patrol 3. Its shaft rotates in time with the engine, allowing it to send a high pressure fuel pulse to each injector at the proper time. Too little spark advance will cause low power, bad gas mileage, backfiring, and poor performance. 9l cummins w/6-speed trans (245hp) More Buying Choices $1,299. When the inside ousing pressure is high, the timing is at maximum advance. bosch diesel fuel injection pump parts you get everything you see in the pictures in very good condition, please message or call with any questions regarding this item or any other item you may require. We offer best in class customer service and advice for your diesel performance needs. it doesnt make any difference. To check it, remove filter from vehicle and drain excessive fuel from filter. CarComplaints. dont know what else to check hope you can help. Without the coating the piston will quickly seize in the pump housing, this causes:. Fuel delivery problems could be: A plugged diesel fuel filter. rv 275"s are in route and we will see what that does when i get them installed. 9L ISB Cummins was equipped with the Bosch VP44 distributor style rotary injection pump. 9L 24V VP44 Pump (245 Hp) Cummins Injection Pump Removal Tool 1989-2018. I just installed a second 90 gallon fuel tank and a Air Dog lift pump with a 1/2 inch fuel line. With more and more firing sequences and more operating pressure, there is potential for injector failure. 5-02 24 valve 5. The CR (Common Rail) TDI engines should not be operated without fuel which may be an issue after repairs such as fuel injector and fuel filter replacement. 5-2004 Dodge Cummins Diesel 4x4 5. A problematic injector pump may affect the vehicle's idling, power performance and ignition features. We basically rooted it down to something in the injector pump has failed. Ford F-250 6. I replaced the VP44 and the lift pump. The injectors in the 6. Heres a link to a howto by Mad. Bulletin Today, February 26, 1982 by Roberto C. P1693 code is a companion code for the injection pump. 7L 2011, CP4 Injection Pump by Industrial Injection®. (VP44 style pump, with manual transmission) Vehicle Symptoms Cruising in 3 rd or 4 th gear a surge will occur with no D. when priming the fuel filter it makes it easier if you take a screwdriver and open the schrader valve till fuel comes out. Inspect injection pump drive gear ID full 360° for metal transfer as a result of slippage on shaft. Never attempt the following procedures with your engine running, as this could lead to serious engine trouble and costly damage on the injection pump gear train. Increased Fuel Consumption. This device can be used with 5-pin electric speed controllers and on vehicles with the DCS (Drive Control System) and PDS (Precision Drive System) controllers. The supply pump is critical for the longevity of the VP44 injection pump. P1688 DODGE Tech Notes P1688 code is typically cause from low fuel pressure. Of course adding PowerService or Stanadyne diesel fuel conditioners would help the lubricity, but that should be a regular thing, every couple of months. The timing advance solenoid is pulse width. Be sure to check out our 'Symptoms' and 'Testing/Removal' tabs (includes our video) on the left side navigation bar or feel free to call us if you're not sure you have a FICM problem. Diesel saying that the VP44 injector pump used on 24 Valve ISB Dodge diesel trucks was unreliable compared to the 12 valve engine's P7100 injector pump. However, with a new VP44 injection pump, you can get back on the road and regain your peace of mind. The injection pump is capable of pulling fuel from the tank. Use a short piece of rubber hose on the filter inlet. Without the coating the piston will quickly seize in the pump housing, this causes:. 4) The shop where I bought my VP44 & LP had another ’99 in for VP44 replacement that would not start unless you disconnected the LP pigtail from the wiring. NOTE: If your vehicle is a Dodge Ram with Cummins engine then be aware that fuel delivery problems frequently cause this code. to get it to prime the injector pump. This delivery tube is called a rail and keeps it there under constant high pressure of 23,500 pounds per square inch (psi) or even higher while it delivers the fuel to each cylinder at the proper time. P1689 (No Communication Between ECM and Injection Pump Controller) - This is usually a sign of PSG failure on the pump, but the customer also needs to check to the wire between ECM and. The two canbus connections can also be tested with an oscilloscope.