Dodge RAM 4.7L fuel cut-off

[ECONORAM]

Thanks Baldo, I had heard that too about the immobilizer. Still stewing on this; just need to stop at Radio Shack sometime and see if they have some relays that will work...

[nbleak21]

Originally Posted by baldlobo

from what i've looked at 2006 is the change over for the immobilizer function to be completely ecm based in chrysler vehicles; before that it was more looked at as an option, specifically before 2000 model year. my 99 tj(wrangler) has a fuse i can tap to turn off the ignition and fuel injectors it's part of the immobilizer function. 2001 to 2005 has a relay that can be by-passed if clever.

Where can I find more info on this relay? my 2004 Ram just got 12.8mpg (mostly in town driving) and I could definitely use some form of DFCO!

[GRU]

Originally Posted by nbleak21

Where can I find more info on this relay? my 2004 Ram just got 12.8mpg (mostly in town driving) and I could definitely use some form of DFCO!

DFCO will not help you much...Drive without brakes in town and you'll get 20% better mileage

[WesternStarSCR]

Ok, so this got me thinking. To all ye old timers (on EM), is there a single set of 'SPECIFIC to automatic transmissions' threads for modding and driving techniques where DFCO, kill switches, DWL, DWB, TC lockup mods, or even the idea listed above of setting cruise artificially low to force DFCO etc.???

Stuck with my 4 speed auto just in my Chevy just as a lot of American OEM owners are right now such as you Ram owners.

I know enough not to key off while in drive, but I want to know more about what has been done with success that the OP was getting at as well.

Thanks all - Sean

[ECONORAM]

Originally Posted by GRU

DFCO will not help you much...Drive without brakes in town and you'll get 20% better mileage

I do not know about this concept. If I'd stay out of traffic jams it'd help. Could you explain, or point me in the right direction? Thanks.

[GRU]

Let's say you're driving in town with lots of lights, accelerate no more than just enough to roll to the next red light so that you arnt using brakes to stop untill you get to about 15 mph or slower, which means if the distance between you starting and stopping at the next light is (let's say) 1 mile, accelerate for the first half mile and let the car coast in neutral for the next half mile to the red light...this is more efficient than what most people do, accelerate up to speed and slam on the brakes just before the red light...The simple way to figure out how it works is, once the car/truck has momentum, it will go without any engine power for a while (some more than others) so whenever possible use that momentum to travel the distance need to the next stop you have to make

[WesternStarSCR]

Originally Posted by WesternStarSCR

Ok, so this got me thinking. To all ye old timers (on EM), is there a single set of 'SPECIFIC to automatic transmissions' threads for modding and driving techniques where DFCO, kill switches, DWL, DWB, TC lockup mods, or even the idea listed above of setting cruise artificially low to force DFCO etc.???

This addresses a lot of the questions about vehicle and transmission specifics for hypermiling the best you can with an auto.

Top 3 ideas I saw:
1. Dont key off, or EOC
2. D to N for coasting should be fine (be mindful not to put it in reverse!)
3. Get a UG or SG to find out spots and wasy to optimize when your TC locks and when you are on DFCO in your car

http://ecomodder.com/forum/showthrea...ing-23931.html

[ECONORAM]

Originally Posted by WesternStarSCR

This addresses a lot of the questions about vehicle and transmission specifics for hypermiling the best you can with an auto.

Top 3 ideas I saw:
1. Dont key off, or EOC
2. D to N for coasting should be fine (be mindful not to put it in reverse!)
3. Get a UG or SG to find out spots and wasy to optimize when your TC locks and when you are on DFCO in your car

http://ecomodder.com/forum/showthrea...ing-23931.html

Agreed WesternStar; one of the hardest things I have is making sure the converter locks in 5th gear. I keep an eye on the vacuum gauge and the tach. The MPGuino has been pretty handy, but I think I'll either employ something from autospeed (a DIY indicator of some sort) or an OBD unit.
If my steering wasn't so heavy, and I had a stick EOC might actually work...

[edit] I found some relays that I think will work for me: http://www.ebay.com/itm/10-RELAY-and...80826731730%26
These will open the circuit when activated, which is what I'm aiming for. 1 per cylinder...
I realize I won't save lots of gallons of fuel, but with the amount of slowing down for lights that I have to do, and the engine computer's desire to maintain a high idle all the time, I figure I'll save at least some go-go juice. Watching the MPGuino, I've never seen regular coasting yield over 50mpg, yet the wife's Avenger will show 150mpg when coasting off I-35 on the off-ramps. My plan is to wire two switches in parallel, one to the throttle that will close the circuit when the throttle closes, and the other to the cockpit. I can then flip the switch in the cockpit when I feel I can coast... The grand plan is to wire some sort of way to only allow it to engage once the tranny reaches 3rd gear, then I'd probably get rid of the cockpit switch. But that's a ways down the road.