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So, after getting my truck running with an AC Delco rebuilt IP it was running beautifully pulling our 6800 lb travel trailer, lots of issues with cooling but this pump made it run better than I ever remember (I was running on a bad IP for quite a while). Then I fogot to put the cap on after...

It took a little longer to get it done than I expected, I did a bunch of other things to the old heap whilst I had it torn up and ended up waiting on parts over and over again. Well it's in now and running great. I installed a fuel pressure gauge on my a-pillar so I can always monitor the LP...

I will but it will be a couple weeks, I have another project ahead of it that I have to finish first.

Rock Auto has an AC Delco reman, I'm going with that. Thanks everyone especially MrMarty51 for the discount tip, I'll take advantage of that.

I tried to take WarWagon's advice to buy a new IP this time but I can't find one. Leroy told me they're not making them anymore and I tried to order from two other vendors who were sold out also, so I have to get a reman. Where is the best place to get one?

Thanks y'all for the input, I'm sure it's the IP now but I can't find a new one, they quit making them. I tried Leroy he's out, Kennedy Diesel just sold their last one. I think I found one at usdieselparts.com for quite a bit more money, I ordered it, we'll see if that works out. I may have to...

FSD = Fuel Solenoid Driver, I quit calling it PMD over 20 years ago after I removed it from the pump. It's still on the trailing edge of my front bumper behind the air dam. Lift pump is a Carter P4601HP giving 11psi at idle, I didn't test it while driving. The extension cable wires have been...

I have had several incidents of not starting while hot. I was towed home a couple times, once I went back the next day and it started right up. I blamed it on the FSD so I got two new ones from Leroy and mounted them both to my heat sink so I can quick change. Since then it has happened several...

Yesterday when the timing was right and I posted the update it was just a coincidence at that time. When it was way off and setting DTC 34 on my transmission test drive was coincidence as well. I took it out for an hour long drive with my Tech2 watching the desired and measured timing and it...

Update: I was in error in the OP, it was the water in fuel sensor that was unplugged, IDK if the ECM adjusts timing in the case of water in fuel or not so maybe that was the reason for the advanced timing. I was replacing injectors & glow plugs (HT Leroy) when I posted originally so I had the...

I recently replaced my slipping transmission and after reassembly I inadvertently left the fuel heater unplugged. Whilst test driving I had 24° advanced timing with the associated knocking and of course a SES light with DTC 34 - Stepper Motor Fault. When I got home I attempted to retard the...

Thanks Rockabillyrat for the detail on code 39. I appear to have a faulty ECT sensor as my Tech2 shows 53°F but I just took it on a 20 minute test drive and it's way warmer than that. I haven't changed it yet but that would explain the code and no lock up. I drove it before reading your post so...

Update: Thanks for the input y'all. I removed my elaborate ground wire as described in my OP because I knew it was overkill after I tracked down the real electrical problem I was having at the steering column plug for the ignition switch. The air in the lines made the most sense as I had removed...

OK, I do have some. I'll try that. Probably be tomorrow though.

I did disconnect my returns to facilitate getting the crossover off, I will check if its clear next chance I have.

DTC 34: Injector Pump Stepper Motor DTC 35: Injector Pulse Width Short DTC 36: Injector Pulse Width Long DTC 39: TCC Stuck Off My truck was running great, no codes at all but I couldn't keep my wrenches off the old beast. I had a (25 year old) hydraulic hose burst and decided I would change all...

Affirmative, that grommet disintegrated long ago.

This is the old one, the new one is already installed but looked the same. There are no numbers on the part. It's nothing like the photos on Leroy's or Amazon, those might be some stock photos of a heater but not this one. They might still work I just didn't want to take a chance and end up...

Problem solved, here's what I bought for $127 on Amazon: ACDelco 10226035 Professional Fuel Filter. With it I get the heater, water in fuel sensor, new O-rings, and a filter. I'm not using the can since I would have to modify it for FTB. The heater in this thing looks nothing like the ones in my...

Leroy is out of stock on the heater for the FFM. I found this one on Amazon: WIX Filters - 24922 Heavy Duty Heater Kit. It looks identical to the picture in Leroy's store but I can't find anything confirming it is the same one. Does anyone know if this will work in the stock 6.5 FFM...