IBMobile

Grid Heater Bypass Installing this bypass will allow you to manually control if and for how long you want to run the grid heaters when the ECM is commanding the grid heaters on. This will reduce the load on the alternator/charging system and in turn reduce the harmful AC voltage. This bypass will also keep the fault codes P0380 Intake Air Heater Relay #1 Control Circuit and P0382 Intake Air Heater Relay #2 Control Circuit from being set. Parts needed: 1. 2 micro relays, terminal 87 (5) normally open (NO) with suppressor 2. 2 5 watt / 20 ohm resistor 3. 1 single pole single throw switch (spst) 4. 2 male bullet and 2 female bullet connectors 5. 2 ring terminals 7. Rosin core solder 6. 10 female quick connect terminals 8. Heat shrink 9. ¼” protective wire cover 10. Electrical tape 11. Wire 18 AWG 4 different colors would be nice. 12. Optional 3 ATC fuse holders with 2 amp fuse 13. Something to mount the relays and resistors on. 14. 5 or more 6” zip ties Micro relay Putting it together To mount the relays, resistors and fuses I used part of a used relay mount from a Volvo that I found. It was cut and modified to fit the parts. I didn’t want to cut the wire harness at the fire wall to access the solenoid trigger wires, yellow/black and orange/black, that goes from the Engine Control Module (ECM) to the grid heater control solenoids. I ran two wires to each solenoid connecting to the trigger wires with the male bullet connectors. This sent the trigger signal back to the control relays at terminal 30 (3). Two more wires were run from terminal 87 (5) of the control relay back to terminal 86 of the grid heater solenoids and connected the wires with the female bullet connectors. You can cover the wires from the firewall to the solenoids with the ¼” protective wire cover. I installed the rely/resistor housing under the dash secured with a sheet metal screw and attached the ground wires to the dash sheet metal. For power I tapped into the fuse box on the left side of the dash and installed one of the ATC fuse holders and a 3 amp fuse. The control switch is installed into the left side of the steering column cover; I didn’t want it sticking out of the dash. With the switch in the on position the control relay contacts 30 and 87 close and the grid heaters will operate normally giving heated air to the cylinders. The switch in the off position the control relay contacts 30 and 87a are closed and the ECM signal goes to the resistors mimicking the grid heater solenoids. No check engine light and reduced electrical load on the charging system. The switch can be operated on or off before during or after engine start up. Another added benefit is if your batteries are weak the grid heaters can be turned off saving power for the starter. Written by: J. Daniel Martin, Martin’s Mobile Maintenance AKA IBMobile 12/21/2018 View full Cummins article

@dripley You need a bucket so you can carry a tune. Merry Christmas

Here in the progressive state of California my AR has been banded in it's current configuration, it's very bad, looks like an assault weapon and those 30 round mags I had to get rid of so I wouldn't be a felon. In another state it would all be legal. As for the NRA, They haven't helped out here at all.

That $379 price for the RV's from DAP has a $100 core charge. When I bought mine I kept my cores and paid $428. With no timing/fuel controller won't those 90 HP injectors be smoky?

Read this thread, it may help answer some questions.

Replace them with Bosch RV 275, 50HP over stock, no smoke, high quality, last a long time, about $430 for 6 with no core.

Push come to shove we can set up a time to drive my truck over those spots and see if there is a difference in ride.

You live in the same county I live in and drive the same roads. I 've experienced the same thing when driving on different sections of freeways around here. I attribute it to the lane being beat to death and the road surface uneven by the heavy trucks usage of the road. I think you drive on interstate 8 more than I am but that road east of El Cajon is bad. My truck bounces like crazy on north bound interstate 15, just north of the San Diego-Riverside county border and south of the U S Border Patrol checkpoint when I'm in either of the two right lanes. The right south bound lane of 15 just south of highway 76 was tore up and repaved 2 years ago because it was so bad.

The Government took it over. You have to unlock that forum. It should tell you how under the picture.

Use rosin core solder for electrical connections. Acid core is for radiator repair and plumbing.

The wire that smoked, was it yellow with white tracer? If so then that is the power wire for the lift pump from the ECM.

No, that no normal. Is the wait to start light coming on? Do you have any codes?

I've made a grid heater bypass that like the others you can select heaters or no heaters with a switch but the ECM is fooled not to throw code p038 and p0382. The last two weeks have been cold enough here for me to do full testing before it's I release the results.

Right now my 2000 ram with 109k is one of my newer vehicles with the lowest mileage. 1990 Astro van with 334k+ work van 1991 Volvo 940 sedan over 300k 1995 Volvo 940 wagon 186k my daily driver 2001 Volvo S60 sedan 194k 2001 Volvo S80 sedan 170K I installed so many back in the day that I could 'eye ball' it and get it with in a degree or two when checked with a dwell meter. Rule of thumb for single set of points: 8cyl 30°, 6cyl 45°, 4cyl 60° or point gap ~.016". As the points wore and the gap decreased the dwell increased and the timing retarded.

That's as close to stock as you can get. Make sure they are the Bosch RV275 and not some cheap knock off junk. I bought mine from DAP last spring.

The justification is clean, take a deep breath, air and higher, now empty your wallet, transportation costs.

Number of times I've shoveled snow from my driveway NEVER

Yes, disconnect it there by taking the nut off.

The wire, also called "charge cable", that goes from the B+ terminal on the back of the alternator to the PDC, power distribution center, is remover completely from the wire harness. Don't cut it up. You can reuse it as stated above.

Have your old batteries test first to see if new batteries are needed. How is that cable on the truck you're parting out?

The relay is needed if there is an electric lift pump used. The stock system has the ECM powering the lift pump directly. With this mod the power for the pump is drawn from the PDC and not the ECM. I too have a Fuel Boss lift pump and have the electric lift pump disconnected. I only run the electric lift pump to prime the system.

Smoke was coming from exhaust pipe and it was blueish. I think you might have two problems. Blue smoke from the tail pipe is oil being burned in the combustion chamber. The cause of this could be: an over filled crank case, worn valve guide seals, worn or damaged piston rings, problem with the turbo charger. Frist place I would check is the oil level. If oil level is OK then remove the air hose from the turbocharger and check compressor wheel for play or oil. Check the rear of the turbo for oil staining. The other problem is in the fuel system having 0 pressure at times. Start with the electrical test first.

Was it the engine that lost power, where was the smoke coming from and did it smell like burning wires? The Raptor pump may be binding and the amp load is being increased on those small gauge wires that can't handle the increased load. You need to check for 12V at the fuel pump connector when the pressure drops to 0. If no power at the fuel pump then check for power at the ECM 50 pin connector pin #15 and #35. If there is power at the ECM then the fuel pump wire should be ohm tested for continuity from the ECM teminals #15 and #35 to the fuel pump. If no power at the ECM then it may be damaged and will need to be removed and tested. A fuel pump relay should be installed to protect the ECM.

Happy birthday @Russ Roth but you really are a The optometrist has a new eye chart to help with your vision and It's been observed that another hearing test is needed. Enjoy your day!