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2nd Generation Dodge 24 Valve Powertrain

This is a discussion forum of the 1998.5 to 2002 2nd Generation Dodge Ram Trucks with 5.9L Cummins 24 Valve Turbo Diesel power train and drive line system. This includes all sub-system including wiring, fuel, oil, exhaust, air, transmission, computers and sensors.

  1. Started by Tymatthew,

    Hey does anyone know what the little t style valve is below the vp44 pump? 01 24 valve auto...it’s just a little brass t style

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  2. Started by stanman,

    Good morning all, First time on this forum... I get a P1291 OBD readout from my '99 Cummins 24V. Where can I find out what that readout means ??!

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  3. Started by dripley,

    I finally got started on this in earnest today. Did a little on it Monday pm. Then today after the morning mist died away and I got the doctors appointment out of the way the fun began. Itwent pretty well. Not one ceased bolt. They all came out nicely. Made this far today. My helper. The offending leak. The oil is from some bad pouring out of the gallon jug. Now a couple questions. Those metal strips between the pairs bolts at the front and rear of the exhaust manifold, are they necessary to reinstall? I thought they were under the bolt heads until I destroyed them all and realized they were over the bolts. They appear to keep…

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  4. I just replaced the injection pump, the fass lift pump is working good, the pump is getting plenty of fuel. But I cant get it to run, it will start with ether but wont stay running. I have primed the pump and bled the filter housing getting the air out. Please help If you can

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  5. Started by Unreal Summit,

    So when I was checking my transmission the other day for anymore leaks I left the truck running. As I could hear a knock as my head got near the bottom of the truck I could hear a knock. Not like a rod knock not really sure what it was. I could hear it on the driver and passenger side. Couldn't hear anything up top. Is this normal? I have never paid attention or been under one while it was running.

  6. Started by Unreal Summit,

    I got a leak at the transmission line coming off the transmission line right at the fitting. I am assuming it has a oring at the fitting. Can I replace just the oring or the fitting? Is thier a c clip holding it on like on some smaller cars? Or does it just unscrew and the whole line come off? Is this part of the cooler or what is this thing?

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  7. Anybody here have any tricks to getting the VP44 out of the back of the case? Trying to get the pushrod cover gasket replaced. I have removed everything including the nut and lock washer on the end of the pump shaft and 4 nuts on the pump. TDC is set but that o ring is being a mother! I don’t really want to beat on it to get it out, and prying does little but separate it just a hair on the lower driver side (Only place I can get some leverage). Truck has almost 300k on the Odo, but the pump has been replaced at least once. That O ring in there is really on there good. Any ideas?

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  8. These ford seals may or may not work with sertain valve springs, be sure to measure all Id/od before committing. So I'm in process of figuring out why some of my seals are tore/smashed. Finding out that new style seals 03 and up may work on our 2nd gen. They are held in place by spring and can't come up from too much boost etc. I've spoken with https://ussealparts.com and they have both styles at great prices, although top hat style is listed for 03 and newer. The difference I believe is in ID where it slides over guide, sounds like top hat is slightly bigger but that should not affect the sealing capabilities as valve still same diameter. I ordered both style…

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  9. 1. Turn ignition off. Disconnect APPS harness connector. APPS is located on a bracket, just above fuel injection pump. Start engine and allow the engine to idle. Using DVOM, measure voltage at terminal No. 5 (Dark Blue/White wire) on APPS harness connector. If the voltage is greater than 5.5 volts, go to next step. If the voltage is 5.5 volts or less, go to step 3. I get 5.6 2. Turn ignition off. Turn ignition on with engine off. Using DVOM, measure voltage at terminal No. 5 (Dark Blue/White wire) on APPS harness connector. If the voltage is greater than 5 volts, repair short to voltage on Dark Blue/White wire between APPS and ECM when the ignition is on. EC…

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  10. Started by silverram99,

    So when I’m driving down the road sometimes my truck loses its tach and usually comes back within a few minutes. When it does it the check engine light comes on too. After you shut it off and restart it check engine light is gone. Recently I was going down the road and it did it and missed a little when it lost its tach so I drove home to get my scan tool before I shut the truck off and got po336. I have read the article on the site pertaining to the code and need further info because my 12v test light doesn’t come on when it tells me to the B connector and it says to perform test Ver-5a, this is step 5 of the test. I’m not sure where to find this test c…

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  11. Started by plyhrdr,

    hoping someone can help me out. if I go past 25lbs boost accelerating the truck shutters hard and does not enjoy it. will make up to 40ish lbs but it hates it the whole way past 25 lbs. doesnt seem to matter the speed I'm going and the fuel pressure stays constantly between 16psi and 20psi. I just put the injectors in. thought it was because i didnt replac the feed tubes but i did that yesterday and it's still hating life. Please Help!

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  12. Started by Evan,

    I screwed up and orderd the 17.5" 4 in 5 out. Oh well it's not straight through like the areo turbine si hopefully it reduced drone. Snagged a pick. I cut the 5" slip fit end off the aero to use as a joint to make fte longer. Along with a 5" 51" muffler that someday I'll find time to put on our kenworth. I'm expecting no huge reduction from the little fte will most likely later ad a muffler behind it. Something smaller than the 51" Donaldson type muffler. Reworking down pipe hanger to get exhaust off the frame so later I can fit a muffler.

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  13. Started by wil440,

    Quick question, 98.5 24v. PO fitted a aftermarket fuel transfer pump, not sure what it is as not had a close look all i've done is fix the guys mistakes up to now, he removed the factory fuel filter and fitted a cheap *** inline filter before the pump, I've had the truck over a year but not really used it much because of this inline filter and as I work on large diesels for a living I'm not too eager to start when I get home especially as I work 12/6 and I fully get the no restriction fuel flow deal oh and I'm building a house in my spare time, I've fitted a cat fuel filter off of a 9.3 so my filter has no restrictions. The pump is bolted to the block where the facto…

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  14. Having a dead pedal issue on my 2002 24v auto. codes are p0122 p0236 p1475. problem is very intermittent. New apps sensor after confirming all apps power grounds and signals were good. when i have a pedal map and apps reading are were they should be, when problem is occurring map voltage is maxed out and apps signal is all over the place. Initially thought short between apps wiring and map wiring, could not find such short and did not notice change during wiggle test of harness nor could i measure continuity between apps and map circuit. Starting to think bad ecm, the problem did start after bleeding my low pressure fuel system getting diesel all over driver side of eng…

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  15. Started by Royal Squire,

    My son joined the ranks of 2nd gen 24valve/auto owners about 2 weeks ago. He had owned a 95 12valve/5spd White dually about 10 years ago, so when he ran across this 24 valve white dually he just had to look. Ended up trading his crew cab dually 454/5spd Black Chevy for it. He took new truck to Arizona for his cousins graduation and his transmission went out. So he had to get tranny rebuilt in Arizona so he could get back home to Wyoming. I suggested he join this forum and he asked how. I couldn’t tell him. He doesn’t have a computer only a phone. Can someone here help me look smarter than I really am! Thank you in advance

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  16. Started by CAMG3X,

    I have a fuel boss mechanical pump and I had an issue with some debris being stuck in the bypass valve, causing the fuel pressure to plummit. I cleaned it out and put it back together and everything seemed to be as normal around 18psi. Though, today when I went for a drive the fuel pressure jumped up to 45-50psi. Thinking the valve was stuck closed I opened it up to find all was normal. I know I've installed the valve in the correct orientation as well :/. I'm at a loss at this point, can't figure out why the pressure is so high! Any ideas? I drove for about 10 miles, how much harm could this have caused at 45psi? Thanks

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  17. Started by Unreal Summit,

    I have noticed the last few days that my truck just skips 4th gear unlocked and goes straight to 4th gear lockup. Shift great and doesn't slip. Just wondering if this is normal. Soon as it goes from 3rd locked it shift to 4th locked with maybe 2 seconds of 4th unlocked. If it's in 4th locked and get on it or pull a hill it drops to 3rd locked, not 4th unlocked. Normal for everyone else or naw?

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  18. On the 24v that I am building it has a KDP and I was planning on making a little tab to keep that pin in its place, but I was wondering if you had to cut some of the case out to to put the tab in and screw the bolt back in flush or if there was a way to do it without cutting any of the case out. Flywheel question: the flywheel that came off said motor has hot spots on it it appears, being darker blotches here and there. So should I just put that one on there or should I put my old one on that's a little bumpy on the surface where the clutch is applied? Its not terrible by any means but its there. I've heard to not reuse a flywheel that has hotspots but I didn'…

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  19. Started by Bwebb2119,

    Well hello all, I don't know where to even start..... So this is a customer of ours and it was originally brought to us for no power. 1999 2500 5.9 stock. So.... Originally the truck only had throttle to 1,400 RPMS, Code was 1689, After serious going through, I diaged the ECM to be no good, Also the VP44 was bad too, Replaced VP44 and sent ECM to Auto computer performance to Andrew to repair, He was told the 1689 code and he also asked about the infamous wait to start light problem, Yes that was there too. He sent it back to me and the wait to start was repaired but still had 1689 and only 1,400 rpm. Sent it south again and he said he was pretty sure it was fixed th…

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  20. Started by 903Dodge,

    I have always gotten a random P0121 code usually I clear it and it comes back in a couple of months. But this time I caught it in action with my quad. When the dead pedal happens the quad show the throttle 100% open and stays that way till I push the throttle a couple of times. Has anyone else had this issue? Also I need to do the W-T grounding mod. Hopefully on my days off coming up soon. My fuel pressure is 15-16psi, checked for AC voltage 3 months ago and it was good (Will do it again before and after the grounding mod), and this has happened in hot and cold weather, short or long drives.

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