snowshoveler

I was going to say something about Ed sidetracking this thread but I said to myself no thats just not a nice thing to do. I guess I am not the only one that looks at a situation from a couple angles. Normally I would say pictures or it didn't happen but someone might get their wires crossed and get grounded. I will shut up now before I get a timeout myself. At least you folks have a good sense of humour. Chris

My thoughts were to put the diode in but still check the alternator ( using your test ) once in a while. Just a little extra protection. I would never have thought about checking an alternator for AC. But now that I read about it here it makes perfect sense, an alternator makes AC first and then its turned into the DC our trucks use. We still don't know if the AC pulse will kill it or even how much and for how long. I would think that it dosen't take much and not for long either. Still learning and still asking questions. Chris

Just thinking outside the box here...if it is an AC pulse that kills the little guy. Would it be possible to to put a small diode (think thats the name) in the power supply for the PSG. Or are there a bunch of wires that supply current. I do know that part of my checks were battery voltage to 1 wire, not sure about the others in the harness there. Regards Chris

I was mistaken. Crossing the border dosen't mean crossed into Canada. It means crossed into New Jersey. Oh well it will show up eventually. Chris

My little box of parts crossed the border today...25 pounds of goodies. Customs sure takes their time with my stuff. Oh well if I am real lucky it will be here for the weekend install. Most likely it will show Monday. Chris

Unless I am a goof (very possible) the diesel fuel is not much for heat transfer compared to the aluminum or whatever alloy the pump is made out of. Nice work there Ed. Chris

Well...I went and did a bit of homework myself. My VP44 died last week with a P1688 code. I found very little info about that other than Mike says its the failure of the solder in the electrics of the PSG. I sort of feel okay with that. I always wonderd how the truck was treated before I got it. Wondered about fuel and heat. I am carefull with fuel and set the edge to shut off when it cools to 300 degrees. ...Hmmm if its electric, i should send my core to Mike... he has a nasty pump with a gooder PSG than mine. Regards Chris

The cable goes to an electronic sensor thats mounted abouve the VP44. From there its all electric. If the motor mounts were toast I don't think the cable would move enough to change anything. Its a pretty sturdy setup . Chris

Rancherman...The throttle is all electronic controlled, stop and all. Chris

You have been doing your homework KATOOM. My PSG reads (as far as I can tell) 0 281 401 827...it would seem its an original one and the pump itself has no reman numbers on it. I guess thats not bad for a 99 with 157 k on it. Regards Chris

Before i do much more I think the DDRP is gonna need to go somewhere else. Mechanical is what I am thinking. Chris

Rancherman...How is the "new" pump working. Chris

I have a new to me VP44 coming from DAP...I sure hope the PSG is new. The bragg sheet said it had a new one installed. Won't get here for a week but I will try for a pic , maybe you can tell if its new then. Regards Chris

Michael...you spent a bit of time making sure you had no AC voltage messing up your truck. I think this is key to keeping the VP alive and well. Chris

Made the call to DAP and the injectors and pump have been ordered...now to sit down and relax a bit. Will be at least a week perhaps more getting here. Ah the suspence is gonna be difficult. Regards Chris

I spent a bit of time reading Chips diagnostics and looked at Michaels as well. Spent a few minutes here and there this morning and pulled the injection pump off. I was thinking it would be really difficult. Not to bad at all really. It just happened that the tilt load wrecker dropped it in the perfect spot for the morning sun to light things up. I usually prefer to work inside on this sort of thing, but today was an exception. Now to wait for a pump to show...with some injectors of course. Regards Chris

I am thinking a new pump from DAP and maybe some injectors while I have the hood open. Someone was into it before, the turbo is an HX at least the part with the tag is. I thought it was kind of peppy on the highway. Any suggestions about injector size...I asked before and I think I was going with RV275, might go up a bit more. Regards Chris

While I was doing some testing the scanner showed that the crank was turning, the cam was turning but the IP was not. I cleared the P1688 code and waited a while and re did the scan. Pump would turn same rpm as crankshaft. Not sure if I just read it wrong or what. Still wont go and if I keep cranking the P1688 comes back. I have to say that the scanner shows a lot of info and I am still learning what it capable of. Only have fuel from line I think. Regards Chris

Seized rotor...hmmm. The DRB3 shows crankshaft rpm, camshaft rpm but no rpm for the injection pump. Seems like its done doing its rotating I guess. Regards Chris

Well I got and installed the new crank position sensor. No start. Checked for codes with the DRB3 and ...oh oh shows the dreaded p1688 I cleared it and its not back yet but the truck is still not running. Only seems to have pressuer on #5 fuel line. Any ideas whats up. Should I be ordering a new injection pump...yikes. Regards Chris

I should have asked if the bad cranksensor (or wire to it) can keep the truck from running. Regards Chris

I thought the pressure held for a few seconds. Never really paid much attention before I guess. Any chance the false start is what messed up the crank sensor and threw the code. I pulled the starter and removed the sensor. Hopefully thats why I can't seem to bleed the system. I have fuel to the injection pump but not past it it seems. Regards Chris

The wires were burnt or pinched right where they come out of the pump motor. Looks like its been going on for some time Well, I got the rewiring done but can't seem to get it to hold any fuel pressure. Wont start and wont hold pressure when you let off the key. Falls back to 1 lb in a second or 2. Must have a leak on the suction side I guess. Never had this truoble bleading it before. Regards Chris

Saturday had a little trouble getting the truck to start. Checked for codes with my handy dandy DRB3 and sure enough crank position sensor showed up . Ordered 1 and it will be in tommorow afternoon at the local dealer. Figured I was okay to run some errands with it today...not so much. Quit all together at a local muffler shop...grrrr. Figured might as well get it floated home, no problem. Home in the yard I do a bit of diagnosis and think it strange that I have 1 lb fuel pressure. So I use a piece of harness and jump the pump direct...no sound. Pull the pump and find the wires burnt right off at the pump. Must have chafed or something but I dont know why. Nothing there really to cause that. Now to see if I can solder on a couple new ones. Pump was not stuck either, very good shape inside. Looks like new. Anyone else see anything like that. Might not be a crank position sensor after all...false starts set a code maybe? Regards Chris

Hello The new line you bought is for the passenger side of the truck. I just replaced both of mine and didn't inderstand the price difference untill I opened the boxes and started the installation. Regards Chris