IBMobile

Since you have already replacered the fuse and relay have you checked all the wires and connections? Did you check if the ECM is suppling power to relay terminal 86 when you bump the starter and the pump doesn't run?

It never did it before with the same set up so what changed? Do you have a draw straw fuel pickup? What size fuel lines are run from the tank to the VP44? What is the fuel pressure when you do a burn out? Where can you do a burn out in Vegas with all the traffic and red lights?

Do the W-T ground mod first then test AC voltage again. Some people have seen a good reduction in voltage after the mod was done and did not need to fool with the alternator diods.

NO! But, check your switch and it's adjustment first. Oil is in general an insulator but the type of base oil, how it was refined, the type of additive package, along with the type and concentration of contaminants will affect oil to conduct electricity. This ability to conduct electricity in oil is measured in picosiemns/meter (ps/m). Where clean SAE 10W-40 oil is >2000 ps/m and insulating fluids are rated at 12 ps/m.

Flushing is the best way to exchange all the fluid but the pan still has to be removed to replace the filter and adjust the rear band. You need to be careful with a severely neglected transmission. When the fluid is so old that it is black I don't recommend a flush. I've had several people, over the years, call me saying they took their car in for a trans flush and 2 days later the transmission was junk. If the fluid is that bad I would drop the pan change the filter and refill. If the transmission is still holding together after 10k miles drain and refill then every 30k after that.

Two ways you could fix the problem, that I can think of, with out going through all the volt, ohm, amp calculations. The first way is to put a resistor in parallel with the back-up lights to mimic a light blub and absorb that leaking power as you suggested above. The other way is to put a relay in the back-up light circuit this would keep any power from going to the lights until the back-up switch is closed. If a resistor was put in series either before or after the led blub then the blubs would be dimmed.

In front of the State Capital Des Moines, Iowa

I have a switch to turn on the grid heaters or run the signal through some resistors to fool the ECM. I'm working on another simpler bypass that I hope to install on one or both of @JAG1's trucks. If it works OK then I'll do a write up on it around the end of May.

There is no under the hood label denoting emission controls like you find on gasoline engine models stating if it meets Federal or California standards. The basic rule for which light duty diesel vehicle to test is 'if it has an ECM/PCM in it then it needs to be tested'. When the inspection station tests the vehicle they interrogate the ECM/PCM through the OBII port. If the check engine light is on, a fault code is pending, a fault code is stored, or the monitors are not set the vehicle fails the test. In the past with just the Fuel Boss running and the electric fuel pump totally disconnected I have seen fault code P0230, Transfer Pump Circuit Out Of Range; this is why I put the relay in for the ECM to trigger and keep the fault code at bay. I just now tried to induce the P0230 code by removing the lift pump rely and starting the engine with my code reader plugged in to the OBII port. I found no code set at this time but have left the relay out and will drive it that way to see if code will reappear. It may take a while because this is the first time in 2 weeks that I've started the engine and it was over 4 week before that.

My system is set up with the electric pump but not used but with the ECM triggering the relay. The check engine light in this truck would come on if this was not done. I need the light to stay off due to Calif. SMOG testing. The relay option B was used, see below, and the 10 AMP fuse is remove to keep the fuel pump from running. When the electric fuel pump is needed to prime the system, the fuse is reinstalled.

@pepsi71ocean here it is.

I have just the opposite problem. Over the years the fuel pressure at idle has been decreasing. The pressure at idle was 17 psi and has now gone as low as 13 psi, when first started on a cool morning, and will settle at 14 psi. The fuel pressure will jump to 18-19 psi when off idle. This Fuel Boss system, when new, also dropped fuel pressure due to black pieces of hose rubber getting stuck in the pressure relief valve.

With that many miles on the turbo It might be a good idea to inspect it for play at every oil change from now on.

One of the mods I've done is to add a filter in the power steering return line. Hopefully that will increase the longevity of both the power steering pump and the hydroboost unit. Second mod was to wire the truck for video feed from the 5th wheel. This view out the back window of the 5th wheel allows the drive to monitor the trailer being towed behind the 5th wheel, also when changing lanes if the trailers are clear, and aids in viewing behind clearance when backing up. Installing the mystery switch with brake release was a big help in towing.

In a gas powered truck the PCM controls the fuel pump relay, injectors, and ignition along with a host of other things. You'll need to do some testing to find the problem. Start with the basics. Is there power to the fuel pump relay at pin #30 and #86, is the relay being grounded when the starter is engaged. Is there power to the injectors and do they pulse when the starter is engaged. You will need a node for this test. Is there spark at the sparkplugs.

ASD Relay Controlled Lift Pump If the ECM is no longer powering the electric lift pump and you’re using a manual switch wired directly to the fuel pump relay for control there is a danger of the fuel pump feeding a fire in the event of an accident even if the engine stalls. The automatic shutdown relay is an alternative that will turn the fuel lift pump off if the engine stops and still be able to prime the VP44 if needed. The automatic shutdown relay (ASD) in the power distribution center (PDC) is energized by the powertrain control module (PCM) by grounding pin 85 of the relay when the engine is started. This closes the contacts and battery voltage is supplied to terminal 87 of the relay. The terminal 87 of the ASD relay supplies power to the PCM through a 14 gauge dark green/orange (DG/OR) wire. When the engine stalls the PCM opens the grounding circuit within 3 seconds and the voltage is removed from terminal 87. The lift pump relay can be controlled by connecting a wire between terminal 87 of the ASD relay, or splicing into the DG/OR wire) and terminal 86 of the lift pump relay. The power draw of the lift pump relay solenoid is less than 1 amp so an 18 gauge wire can be used. There is an option to run the lift pump without the engine on, a bypass switch and second relay can be installed. The second relay is used to isolate the PCM and not power up systems unless the key is in the on position. Also if the bypass switch was wired directly to pin #86 of the fuel pump relay the amp draw from the PCM would blow the 3 amp fuse. If installed improperly the lift pump could stay on in the event of an accident. Installer/user assumes responsibility for proper installation and use. Written by: J. Daniel Martin, Martin’s Mobile Maintenance AKA: IBMOBILE 3/24/19 View full Cummins article

It's going to be either 3:55 or a 4:10. Look in your glove box and you might still be able to read the label that has the gear ratio info on it. If not call the dealer service or parts department and with the vin# they can give you the built info.

280 ft-lbs

Clean the top of the block so it's ready for the head gasket and head. Now spray a light coating of oil on the surface to keep it from rusting. Cut a piece of cardboard a little larger than the top of the block and lay it on the block then put a 2x4 or plywood on top of that to hold it in place. When you are ready to put the head on remove the cardboard and clean the surface with brake clean but leave the cylinder walls wet with oil. The corporate garage

I also use it as a paint remover and weed killer. We've got your friction modifiers right here.

First off, nice looking clean truck. I went through 3 Carter left pumps and read all the problems people were having with their electric lift pumps so I installed a mechanical Fuel Boss lift pump with the supplied 3/8 fuel lines and stock fuel tank pickup without a draw straw. I plumbed in a cheap Airtex pump that I've used to purge air from the system but is unused the rest of the time. The fuel pressure is 18-19 PSI going down the road with Rv275 injectors and an Edge EZ towing an 8K fifth wheel with a boat behind that.

Yes, first eye protection. Next apply heat to it with an acetylene torch and let it cool; this sometimes brakes the rust bond between the bolt and nut and takes the hardness out of the metal. Next center punch the broken bolt and, starting with a small drill bit, drill a hole through the bolt and increasing the bit size until either an easy out extractor can be used, or the hole is big enough to rethread the weldnut with a tap, or a stud MIG welded into the hole. If you use an easy out be carful not to break it off in the hole. They can be snapped off and are even harded to get out. If you don't have access to all the tools needed It might be cheaper to have some one else do it. @01cummins4ever same thoughts 2 minutes before me.

The grounds for the PCM are done that way also.