busterboy

Thanks I had two codes from the beginning, PO252 and P1688, now I only have the P1688, and like I mentioned, I have pressure and fuel to the pump and voltage, so I don't know what else it could be then the VP? On the gauges I heard a lot about the fuel killing the sensors on the electric gauges, yet i wonder if the fuel affects the sensors on those low pressure warning lights? I would prefer electric but I don't want to be replacing sensors regualry Thanks

Everyone has been helpfull in assisting me in diagostig my VP44, on my 1999 Dodge, with the death code P1688, 10lbs of pressure, voltage at the pump, fuel at the VP, Flow test, per cycle of the Lift Pump (which has been retrofitted in the tank by Dodge at 60k), 1.5 Liters, 55 ounces on two tests, and no fuel at the injectors, at a pump cycle, of either 25 or 30 seconds. At this point it seems the VP is bad? When I change it I want to install a pressure, gauge I'm confused on electric, then theres issues on the mechanical, I have read that the senders go bad on the electric gaugesm has anyone heard this? If i go mechanical the issue is where to mount it, with a line over wires, what are most people installing? Also has anyone ever used GlowShift Gauges?, they seem about 30 to 40 dollars chaeper, I don't know why gauges are so expensive, I used to run Stewert warner when I was younger, any ideas i would appreciate Thanks Again

Thank You how long has your pump been in, I'm just looking for reliability, you say there computers are new, the place in CA puts rebuilt ones on top from Bosch, I do agree 1000, for the VP and lift pump is a great deal how do they do it Thanks Dan

I did the test twice, I didn't have the fittings, but what I did is to attach a clear plastic hose to the outlet line from the filter, i was by myslef, so I tested it by once holding the hose and once the air was out I held it with my thumb, then I shut off the key and then tapped the starter again for the duration of the pump cycle, the other time i just set the hose in the container , and just let the air purge both times they were close to the same results test 1=1.598 liters---56 ounces test 2=1.568 liters-----55 ounces the reason for the air was because of the long tube once it filled the air was gone, so I may have lost an ounce or so in the process. I used an out board motor oil fill bottle to measure with I pumped into a gallon container and transfered to the measuring bottle. At the same loacation where the dealer had inserted a 3" piece of neoprime hose from the filter line to the fuel fitting by the banjo bolt on the pump I tested the pressure there just to check before I tested at the filter housing, I still only got 10 lbs. Thanks Dan

Thanks, I have never heard of DAP, I'm in CA, are their pumps good, I don't want to be changing them regularly? do they also put a rebuilt computer on top of the new pump, one online vendors installs used computers on their base pump and then theres options from there? When dodge retrofitted my pump, on the line from the filter to the pump they have a short section of neoprem hose, I asume when they changed the filter assembey the lines were a different length, I was thinking about putting a tee there for a gauge either manual or electric, any thoughts? Tanks Again

Is your lift pump in the tank or on the frame, if its in the tank does your auxiliary pump pump through the tank pump, and how did you mount your gauge Thanks

Thanks

I read a article from ALLDATA that if you have a 1998.5 to 2002 Dodge with the retrofitted pump in the tank you can't go just by pressure, it states you have to use the test procedures for a 2005 Dodge, which I haven' found yet. When I checked the pressure when cracking yesterday it dropped off to zero so that concerned me. I have cleared the codes a few times, but I haven't cleaned the plug I will try that, I also read today that you can try unplugging the lift pumpcuircut breaker and try to start the truck the article stated that if there is a crack internal in the VP the lift pump does not let it buld enough pressure in the pump to start it? No matter I plan on installing a gauge just need to see which is better mechaical or electric and where and how to install it Thank You

Thank You, a rebuilder in Oakland CA, requires the lift pump to be changed also; however if you already have the retrofit pump in the tank, they will give the 12 month warrenty.

Thanks, yes I did read a blimp put out by ALLDATA that on the retrofitted in the tank pumps you can't just test on pressure, its more on flow the sheet said to use the testing procedures for a 2005 Dodge diesel, which I haven't located yet., No matter what I plan on installing a gauge I just need to see whats better mechanical or electric and where to install after the filter. Thanks

HI, I was reading the article on Fuel pressures for the VP44. I have a couple of questions. My truck is a 1999 and has 87,000 miles, the stock lift pump went out in 07, 57,000 miles and was retrofitted with a new lift pump in the tank, along with a new filter assembly. The truck was running good, the other day I stopped for about 30 minutes got back in the truck, started right up idled perfect, but stumbled above an idle, so I idled home, changed the fuel filter, had a very hard time starting it. I primed the system about 5 times before trying to start it, it finally started but real rough. The next day I rented a fuel pressure gauge, I have 10 lbs at the filter, I checked fuel at the pump have fuel, no fuel except #4 injector, 12 volts at the VP44. 2-codes at first, PO252-P1688, now just the P1688. So I was set to order a pump, then I wanted to check the pressure one more time, I still have 10lbs, but when cracking it drops off to 0, I thought the other day I had 10 lbs all the time, but not sure anymore. Questions 1st the pressures listed in your article are those for the stock frame mounted lift pumps or the retrofitted one in the tank like mine. 2nd, should my pump be pumping when cracking, I know the pump comes on for only 30 seconds when you bump the switch, but how often does it run when the truck is running? 3rd, with the codes I listed does it sound as though the pump is dead, and do they go out like that?