Mopar1973Man

This is what's bad... People start doing the swapping of parts and never exactly know what had failed or failing and continue to install parts till its fixed. This is a very expensive method of repair. I'd rather invest money in a few tools and bench test properly and know without a doubt what has failed and deal with it properly than guessin'.

I've used that before. Not bad but not chemical resistant. I had a old 51 Willy Jeep I painted under the hood and the floor board with that liner it did OK but spill brake fluid, fuel or oil on it and it tends to peel up.

Ordered? Ok so what did you pay for it? From who did you order it?

Hmmm... I might have to get my tripod out and do a bit of video with the camera tomorrow or the next day.

I've updated the article to provide link back to these post and the photo of the blown diode pack.

3 cylinder mode is done by telling the ECM not to fire. So the electrical pulse is not present. So the solenoid slaps closed and no fire is give for said cylinder. Then next cylinder the solenoid is fed a signal to fuel. Mostly the ECM that does this. As far as I know there is no way for the VP44 PSG unit to do drop cylinders on its own. Still in all pop testing and compression test are much cheaper than a VP44 replacement.

If engine coolant is over 140*F it can't start 6 cylinder or 3 cylinder. If engine coolant is over 170*F all 6 cylinder and 3 cylinder modes are cancelled till coolant temperature falls below 140*F. So it not going to be a injection pump or ECM thing. But... It's very possible for a injector(s) that is pissy or pop pressure is off to create a misfire condition. It very possible for a cracked piston to create this problem too. JL Welding was the one that comes to mind that spent huge amount of money chasing misfire problem that turned out to be a cracked piston. Hence why I'm still suggesting injectors being pop tested and compression test.

Opps. Typo. Didn't Hurt. Post corrected.

Thank you! You are the first person to supply good photos and test data proving without a doubt the alternator diode issues! Thank you!

Once again here we go go back and have the injectors pop tested. Still might not be a bad idea to compression test the engine while the injectors are out of the head.

400-450 PSI is typical good compression. http://articles.mopar1973man.com/general-cummins/34-engine-system/144-compression-testing

Damn that pipe is huge. That's one thing about the 5" it puts the pipe too close to things with lots of heat.

Not as far as I know... It's 3" from turbo back. But stock muffler and resonator are 4" in-between the two units. But the pipe is all 3".

Yea... I gotta admit this is only site I know of where even the females come to hang out.... Tracy you know better...

Funny... He was the same way about buying a gauge in the first place and was telling me he might want to sell the gauge afterwards to re-coop the loss.

If he's got a old school regulator he can shim the regulator up...

Another test is pull the alternator fuse and the field lead and go for a test run. If the problem goes away then you know the alternator is the cause.

I'll play with the truck a bit more tomorrow. I've got to head to work for a partial day. So I'll play a bit to see what its sounds like (barriers, hill banks, buildings, etc.). I love the idea of it being quieter now. But it sure didn't hurt the performance that I can see.

Well I've gone and done it. I went and installed a muffler. But this muffler I was happy to install. It a 3" in and 3" out with straight pipe through it. Designed much like a glass pack but not. Best part NAPA has them in stock for super cheap price. NAPA - Muffler - EXH 21468 http://www.napaonline.com/Catalog/Result.aspx?Ntt%3d21468%26Ntk%3dKeyword%26Nty%3d1%26Dn%3d0%26D%3d21468%26Dk%3d1%26Dp%3d3%26N%3d0 It really quiet after all the years of straight pipe it super quiet. People are going to wonder if I sold my truck.

Welcome to the family. As for you comment for transmission lock and unlock issue... http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/28-transmission-systems/260-torque-converter-lock-unlock-issues

Get a hold of http://forum.mopar1973man.com/index.php?/user/565-pepsi71ocean/I know he's got a compression gauge.

Well you know the old saying... "If it's too loud your too old." I guess I'm just getting old. I finally opted for a muffler on the truck and got a awesome 3" in and out muffler for $80 bucks from Napa. I will admit over straight pipe its way quieter now. The muffler is a straight through design so there is no baffles per say to create added EGT's. When you look through the end of the muffler its a straight through pipe. Napa Muffler - EXH 21468 http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Muffler-H-D-Truck/_/R-EXT21468_0006446325 Mod listing... http://forum.mopar1973man.com/index.php?/garage/vehicle/2-dodge-ram-2500/?tab=mods&mod_id=77 Installed: November, 18, 2014 Mileage: 238,000

Good Gawd ISX that camera is beat to hell and back...

Once the high idle feature is enable you get both 3 cylinder and 6 cylinder high idle features. Here is the manual for the Version 2 High idle switch. http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/64-mopar1973man-com-high-idle-kit/455-mopar1973man-com-high-idle-operation-manual

I'll take it off your hands... I could never have enough diesel trucks.