Mopar1973Man

ECM is on the driver side of the blockPCM is on the passenger side firewall

When you use a propane weed torch to light you fire. (Lazy man way)When you install a pyrometer on your stove stack to monitor EGT's.When the firewood get parked in the shop...... and the truck is left outside.

Feel the love... Still funny as hell seeing this...Well I hate to say it but I was a Computer Nerd back in 1984 written machine language code for Atari 400 and Atari 800 computers back in the day. I even setup my first BBS in Cally ran it on my Atari 800 computer and 2400 baud modem.The long hair did start till after 6th grade every since then I kept it.I am who I am...PS: MoparMom says, "Picky picky picky.."

So with my winter front I'm gaining more warmer air under the hood aiming to reach 100*F as a minimum for IAT temps. With my winter front I typically see roughly +50*F gain over outside temps so like right now its 32*F so it would be 82*F at the IAT. Close... Then also the IAT fooler on top of it Quadzilla tech even admitted the idea is solid because stable IAT temps will keep the timing table from jumping around. Also that ECM starts to retard timing slightly but then like a Edge Comp module can take advantage of the slack and push the timing forward again because the Edge Comp can modify the timing table after the ECM. Even yesterday with temp as cold as 21-25*F for day time high, winterized fuel, etc. I still got 20.5 MPG. Not bad If I say so myself. So winterize fuel, wind drag and thicker fluids excuse is now blown out of the water. There is a difference between HP/TQ tuning and Economy tuning. For HP/TQ your going to be running high boost pressures creating huge amount of compressor heat for a period of time down a quarter mile track. You looking to cram as much air into the cylinder as possible to make power so yes cold air is the way to go. But for economy tunning where you boost pressure typically float 2-5 PSI and there is no heat created by the turbo and the outside air is freezing cold passing over the intercooler. This retards the burn rate of the fuel. So now adding warmer air to the manifold bring the fuel burn rate back up and give you better economy numbers again.

Bad sign. You've got a ECM that is failing to boot up the software into memory. Typically bad memory chips inside the ECM and will require replacing the ECM.

Increases MPG because it give the illusion of being summer temperatures. Truthfully warmer air always produces better MPGs over colder air. Driveabiltity basically there is not much difference. The IAT fooler all it does is change the timing table.

Hey Gang... I felt I should let you all know that with winter here and snow fall happening... Please slow down! I just got back from a vehicle slide off no one was injured but the vehicle took on damage. All the time of working this doing traffic control people were driving excessive fast on icy roads. Please be careful and slow down. It not worth wrecking your truck for a extra speed. Just leave early and get there safe! Have a Merry Christmas and Happy New Gang!

Sounds like fun. To bad I'm too far away.

I kind of wonder about the security bolt idea too. What happens when the day come you need to remove your tailgate and you've lost the special socket or the socket fails and breaks then what? Kind of like the days back in Cally with special lugs with special keys. I had a set of those on my Charger and one day had a flat tire and couldn't get the tire off because the key stripped the bolt head out. So I had to walk home and get a ride back with a pair of vise grips to get that foul thing out. There is lots of ways to secure stuff but come on when the security makes basic life insane its time to re-think it a bit.

Heck my hose clamp idea would of been cheaper...

When you making your post. Scroll down just a bit and hit the MANAGE ATTACHMENTS button and then upload your pictures.

Let's say they change the spring and can upgrade it from 15-17 PSI for a Bosch VP44 injection pump to 35-40 PSI for the Bosch P7100 injection pump. Just changing a spring. As for tales I've heard I heard of pressure well up in the 60's for failed Raptor regulators.

Picture please I would like to see this...

So a re-cap... Start with mis-located bulb... http://forum.mopar1973man.com/attachment.php?attachmentid=4764&d=1354590819 Corrected alignment of bulb... http://forum.mopar1973man.com/attachment.php?attachmentid=4765&d=1354663425 To replacements... http://forum.mopar1973man.com/attachment.php?attachmentid=4778&d=1354917977 I'd say you're heading the right direction...

My AirDog has been rather stable since shimming the spring and put a slight oval the spring.

That's why AirDog's have a 100 micron or so prefilter and not 2-3 micron before the pump. It to filter off the large stuff before entering the pump and protect it from lock ups from large debris.

IAT has no real change to fueling it effect more of the timing curve than fueling. Like myself I don't use the IAT sensor at all mine is unplugged and I stuff a rheostat in the plug for tuning ability for MPG's more so.

If it rises then you best reduce your pressures.

Apparently the sensor is good because you didn't say anything about error codes or CEL lights. Little common sense. So the sensor has to be in the realm of normal values other than that the sensor would of thrown a code. So now go back and figure out what you did wrong during your testing.

As far as I know its a ECM problem.

Actually no its not so much the AirDog or lift pump. Its the opening and closing of the injection pump valving. As the injection pump opens up to draw fuel in the slams shut the valving to pressurize the load of fuel. This is what creates the water hammer pulses. Like this little video I created. http-~~-//youtu.be/Kl2pa7pmES4

It's the same. It doesn't change. The water hammer pulses are the same for all series of trucks including common rail.

Just a repainted Fleetguard...

P1688 - Death Code for the Bosch VP44 Injection pump electronic are brain dead. Replacement is required. http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/59-obdii-error-codes/227-p1688-internal-fuel-injection-pump-failure P0237 - MAP sensor voltage is low. http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/59-obdii-error-codes/167-p0237-map-sensor-voltage-too-low As for the P0237 do the diagnostic on it first. Also if you got any modules hooked to the MAP sensor unplug them at re-test.

Fleetguard filter here ans 1-2 seconds tops.