IBMobile

You mean truckpool? To where? I thought we all were going to your house for the food. When is it going to be?

A painful lesion for sure. I've been a mechanic for 49 years and married for 43 and to this day I don't wear a wedding ring or any other jeweler for that very reason.

From the 2001 Ram FSM page 14-79: Normal current flow to the pump is 12 amperes. With the engine running, the pump has 2 modes of operation: Mode 1: 100 percent duty-cycle with a minimum pressure of 10 psi except when the engine is cranking. Mode 2: 25 percent duty-cycle with minimum pressure of 7 psi with the engine cranking The 25 percent duty-cycle is used to limit injection pump inlet pressure until the engine is running. How many trucks with relayed controlled lift pumps have had the relay go bad? I haven't heard of any but I'm sure there has been some. Like all things, they are made to last only so long and you might want to replace it as a maintenance item. If relay failure was a problem due to arcing contacts then a solid state 20 amp mini relay could be used.

You should be thankful, it's more than I got.

Count me in. I'll bring the potato salad and beans.

A shorted 40 amp relay.

If that bracket is leaning in right now then shimming the upper bag bracket out with the with the hitch bracket and flat stock will make it sit straight or out just a hair. I'd be looking at where the bolts are for the air bag brackets so as not to interfere with the hitch brackets and the release handle.

From 2001 FSM for 2 wheel drive with all wheel abs

How far does the ball hitch bracket go behind the upper air bag mounting bracket. Maybe have a lower bracket fabricated to the needed off set with anyneeded spacers at the upper bracket.

MAP sensor giving false reading causing the ECM to command more fuel at the VP?

If Dodge used solder then a prop 65 label would have been needed on the dash to sell them in California.

I'm running the same as @01cummins4ever but with an Edge EZ and use the truck 90% of the time for towing up to 9k pound trailers. I really like the boost of power with out overwhelming the drive train.

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.